Solid Polymer Derived From Acyclic Hydrocarbon Patents (Class 524/528)
  • Patent number: 6143818
    Abstract: An elastomeric-based hot melt adhesive composition having a variety of end uses, particularly in construction and elastic attachment applications on nonwoven disposable articles. The composition includes an elastomeric rubber polymer or a mixture of elastomeric rubber polymers together with a semicrystalline olefinic polymer or a mixture of semicrystalline olefinic polymers, a tackifier resin, a plasticizer, a wax and a stabilizer. The preferred elastomeric rubber polymer is an ethylene-propylene rubber copolymer (EPR) and/or an ethylene-propylene diene monomer rubber terpolymer (EPDM). The hot melt adhesive composition can be applied using common application techniques such as extruding or spraying.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: November 7, 2000
    Assignee: Ato Findley, Inc.
    Inventors: Baoyu Wang, Malcolm R. Luebkert, III
  • Patent number: 6120869
    Abstract: An adhesive roofing tape is based on a combination of brominated butyl rubber and EPDM. A non-diene block terpolymer is interspersed in the cross-linked polymer network. A plasticizer and tackifier are included to provide resiliency and permanent tack. An important aspect of the invention is to use a high molecular weight polyisobutylene plasticizer and a peroxide curing system. Rapid crosslinking without concomitant rapid degradation of the brominated butyl rubber occurs and some limited degradation of the plasticizer contributes to surface tack. A method of making the adhesive roofing tape is also provided.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: September 19, 2000
    Assignee: Carlisle Companies Inc.
    Inventors: Daniel John Cotsakis, Ronald Lynn Senderling, Nicholas John Shears
  • Patent number: 6112477
    Abstract: A pumpable, thermoplastic desiccated mastic capable of desiccating a sealed insulating glass unit. The disclosed compositions comprise a defined resin component and a desiccant/adsorbent component comprising at least 20% by weight of the composition of a desiccant or moisture and volatile organic chemical adsorbing material. The said desiccant/adsorbent component being present in an amount less than the level which will cause the composition when tested as set forth in ASTM D-1238, Procedure B using a 1100 gram load and an 8 gram sample at 190.degree. C. to provide a melt flow time for a piston travel of 2.54 cm(1 inch) of more than 60 seconds.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: September 5, 2000
    Assignee: H. B. Fuller Licensing & Financing Inc.
    Inventor: Anne Spinks
  • Patent number: 6110999
    Abstract: A composition is disclosed that comprises at least one base polymer, at least one resin and optionally one or more additives such as a filler, colorant, among other additives. The disclosed composition can applied by spraying, immersion, brushing, rolling onto the adherent surface; caulking, among other methods of application.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: August 29, 2000
    Assignee: Denovus LLC
    Inventors: Darren Lee Ourth, Jess Rogers, Jeffrey J. Richerson
  • Patent number: 6107367
    Abstract: A thermoplastic traffic marking composition that includes resin(s) and at least two polyethylenes, the polyethylenes having a plurality of molecular weights, can be applied as a profiled traffic stripe within a temperature range of about 330.degree. F. to about 380.degree. F., to a road surface, while substantially retaining the profile in which it was applied.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: August 22, 2000
    Assignee: Jackson Products, Inc.
    Inventors: Richard M. Lazarus, Amelia M. Nucup
  • Patent number: 6093359
    Abstract: A process is disclosed for the manufacture of reinforced composites. This method provides a process that allows for the direct mixing of discontinuous reinforcement such as wet chopped strands of glass fiber or continuous reinforcement such as glass strands, with an aqueous suspension of a solution polymerized polymer, such as polyvinyl chloride. The process results in a cost-effective means for reinforcing polymers such as PVC while simultaneously substantially improving properties such as impact strength, stiffness, and moldability without the need for a binder.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: July 25, 2000
    Inventors: James V. Gauchel, Robert M. Skrowronek, Thomas F. Martin, III, Anthony G. Hankin
  • Patent number: 6087446
    Abstract: Masterbatches comprising high density polyethylene (HDPE) are used for the production of polyolefin articles, particularly films. Employing HDPE in a masterbatch alone or in combination with a hydrocarbon resin and/or a polyolefin ultimately results in extruded polyolefin articles of optimal stiffness and ductility. Employing a high density polyethylene in combination with a hydrocarbon resin and a polyolefin in a masterbatch causes the masterbatch to solidify more rapidly and be pelletized more efficiently.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: July 11, 2000
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Patent number: 6087435
    Abstract: A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 11, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
  • Patent number: 6066690
    Abstract: This application provides a heat vulcanizable rubber composition which prevents scorch in a molding process for the production of vulcanized rubber molded articles, and has good storage stability when the composition is formulated in the form of a one pack pasty composition.The heat vulcanizable rubber composition of the present invention contains (A) a rubber component having double bonds, and (B) a vulcanizing agent in the solid state at room temperature and a vulcanizing accelerator in the solid state at room temperature, characterized in that the particle surfaces of at least one of the vulcanizing agent and vulcanizing accelerator are treated with a fine powder having a center particle size of 2 .mu.m or less in a weight ratio of said at least one of the vulcanizing agent and vulcanizing accelerator to the fine powder in the range between 1:0.001 to 1:2, to form the fine powder-treated vulcanizing agent and/or vulcanizing accelerator.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: May 23, 2000
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Yoshimi Shibata, Tatsuya Okuno
  • Patent number: 6063872
    Abstract: A composition consisting essentially of:A) a syndiotactic monovinylidene aromatic polymer, andB) a random interpolymer of an aliphatic alpha-olefin and a vinyl aromatic monomer, wherein the random interpolymer contains greater than 40 weight percent vinyl aromatic monomer.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: May 16, 2000
    Assignee: The Dow Chemical Company
    Inventors: Kevin L. Nichols, John M. Warakomski, David H. Bank, Charles F. Diehl
  • Patent number: 6060562
    Abstract: A thermoplastic composition with improved properties for making fuel containers, e.g. for fuel oil, petrol, diesel oil or alcohol, and specifically for making fuel lines for feeding fuel to a fuel tank or engine. The thermoplastic composition includes a thermoplastic polymer matrix and at least one compound that enhances the resilience of thermoplastic compositions. Said matrix consists of a mixture of: at least one first thermoplastic copolymer produced by copolymerising .epsilon.-caprolactam with at least one monomer selected from the group which includes an amino acid having at least nine carbon atoms, or the corresponding lactam, and a mixture of hexamethylediamine and a diacid having at least nine carbon atoms, the weight ratio of the .epsilon.-caprolactam to the total amount of hexamethylenediamine and diacid being 4-9; and at least one second thermoplastic polymer or copolymer produced by polymerising monomers having at least nine carbon atoms.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: May 9, 2000
    Assignee: Nyltech Italia
    Inventors: Cesare Guaita, Franco Speroni
  • Patent number: 6060563
    Abstract: Graft copolymers having cationic units pendant to the backbone chain are disclosed. These polymers are prepared by reacting a polymer containing halogenated paramethylstyrene units in the chain, e.g., a brominated copolymer of isobutylene and para-methylstyrene, with an anionically polymerized polymer made using an organolithium initiator compound having the formula R.sub.1 R.sub.2 Z R.sub.3 --Li where R.sub.1 and R.sub.2 are alkyl radicals, R.sub.3 is a direct link or an organic radical and Z is nitrogen or phosphorous. Reaction of the anionically polymerized polymer having an R.sub.1 R.sub.2 Z R.sub.3 --end group with the halogenated polymer leads to graft polymers coupled by a quaternary ammonium or phosphonium groups.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: May 9, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Dennis G. Peiffer, Hsien-Chang Wang, Pamela Jean Wright, Joseph A. Sissano, Lewis J. Fetters, Louise M. Wheeler, Rebecca L. Rucker
  • Patent number: 6051655
    Abstract: A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 18, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
  • Patent number: 6020411
    Abstract: A composition comprising:(i) a mixture of about 40 to about 80 percent by weight of a copolymer of ethylene and an alpha-olefin having a melt index in the range of about 0.1 to about 10 grams per 10 minutes and a density in the range of 0.870 to 0.930 gram per cubic centimeter and about 20 to about 60 percent by weight of a copolymer of ethylene and ethyl acrylate having a melt index in the range of about 0.1 to about 50 grams per 10 minutes and an ethyl acrylate content in the range of about 10 to about 40 percent by weight, and for each 100 parts by weight of said mixture,(ii) about 30 to about 150 parts by weight of a mixture of talc and calcium carbonate wherein the weight ratio of talc to calcium carbonate is in the range of about 0.3:1 to about 1.2:1; and(iii) about 1 to about 20 parts by weight of an organopolysiloxane having a kinematic viscosity in the range of about 0.06 to about 2 meters per second as measured at 23 degrees C.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: February 1, 2000
    Assignee: Nippon Unicar Company Limited
    Inventors: Shoji Hayashi, Katsuhiro Horita, Koji Ishihara
  • Patent number: 6013726
    Abstract: A polystyrene-based resin composition containing a styrene-based resin with mainly syndiotactic configuration, a polyamide, and a rubber polymer as main components.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 11, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
  • Patent number: 6011090
    Abstract: A resin composition comprising a resin (a) and a conductive filler (b), wherein the resin (a) contains a styrene type thermoplastic elastomer and/or an olefin type thermoplastic elastomer, said resin composition having a volume resistivity of from 10.sup.2 to 10.sup.12 .OMEGA..multidot.cm and a compression set (Cs1) of at most 35% by JIS K6301.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: January 4, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kouichi Sakogawa, Manabu Nishikawa, Tsutomu Isaka, Koukichi Komatsuzaki, Hideki Takahashi
  • Patent number: 6011102
    Abstract: A polypropylene-based resin composition comprising:(1) 55 to 75% by weight of a polypropylene-based resin (A) selected from the following (i) and (ii);(i) a crystalline propylene-ethylene block copolymer composed of a propylene homopolymer portion as a first segment and a propylene-ethylene random copolymer as a second segment, and (ii) a mixture of the crystalline propylene-ethylene block copolymer (i) and a crystalline propylene homopolymer;(2) 10 to 15% by weight of an ethylene-octene copolymer rubber (B) having a melt flow rate (measured according to JIS-K-6758, 190.degree. C.) of 0.5 to 10 g/min., an octene content of 20 to 25% by weight and a density of 0.860 to 0.875; and(3) 15 to 30% by weight of talc (C) having an average particle diameter of not more than 3 .mu.m, the total amount of (A), (B) and (C) being 100% by weight, wherein said polypropylene-based resin composition satisfies the following expression:0.25.ltoreq.(A)'/[(A)'+(B')].ltoreq.0.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: January 4, 2000
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Chemical Company, Ltd.
    Inventors: Moriyasu Shimojo, Shin-ichi Kondo
  • Patent number: 6001455
    Abstract: There is provided a sheet-shaped product of a thermoplastic elastomer provided with an embossed pattern on the surface thereof, comprising as a base material a component (II) comprising a thermoplastic elastomer, said elastomer being obtained by subjecting a composition (I) comprising the following components (A) and (B) to dynamic heat treatment carried out in the presence of an organic peroxide: component (A): from 10 to 75% by weight of an olefin resin containing 50 to 100% by weight of a crystalline propylene polymer resin, and component (B): from 90 to 25% by weight of an olefin copolymer rubber containing 10 to 100% by weight of an olefin-propylene copolymer rubber whose propylene content is from 65 to 90% by weight.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: December 14, 1999
    Assignees: Mitsubishi Chemical Corporation, Toyota Jidosha Kabushiki Kaisha, Kyowa Leather Cloth Co.,Ltd
    Inventors: Takeyoshi Nishio, Takao Nomura, Yukio Okishio, Ichiro Nishi, Tatsuo Yamamoto, Junji Mayumi, Takao Usami, Takao Yazaki
  • Patent number: 5998524
    Abstract: Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as a crystalline isotactic propylene polymer, and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene, and copolymers of ethylene and octene which are produced with metallocene or Kaminsky catalysts. If desired, other components, such as fillers, can be included.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: December 7, 1999
    Assignee: Solvay Engineered Polymers
    Inventors: Satchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
  • Patent number: 5985971
    Abstract: Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as a crystalline isotactic propylene polymers and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene, and copolymers of ethylene and octene which are produced with metallocene or Kaminsky catalysts. If desired, other components, such as fillers, can be included. The thermoplastic olefinic, polymer blends are suitable for automotive applications.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 16, 1999
    Assignee: Solvay Engineered Polymers
    Inventors: Satchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
  • Patent number: 5922257
    Abstract: A process to produce an article having a granite-like appearance is disclosed which consists essentially of (a) extruding a first mixture to form a second mixture; and (b) using the second mixture to form an article having a granite-like appearance. The first and second mixtures are in the form of particles where the first mixture consists essentially of about 99 to about 90 wt. % of a first particle composition and about 1 to about 10 wt. % of a second particle composition. The first particle composition consists essentially of a first polymer which consists essentially of a thermoplastic (co)polymer of ethylene and the second particle composition consists essentially of a colorant and a second polymer which consists essentially of a crosslinked thermoset (co)polymer of ethylene.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: July 13, 1999
    Assignee: Phillips Petroleum Company
    Inventor: James E. Keesling
  • Patent number: 5910523
    Abstract: Composites from a semi-crystalline polyolefin and nanometer sized fillers with improved modulus, tensile strength and crack growth resistance are disclosed. The nanometer sized fillers are first functionalized with an aminosilane. Thereafter, a carboxylated or maleated polyolefin is grafted to the filler through an amine-carboxyl reaction. The resulting modified filler is dispersed in a semi-crystalline polyolefin (eg. polyethylene or polypropylene). Co-crystallization between the carboxylated or maleated polyolefin and the semi-crystalline polyolefin can improve interaction between the filler and semi-crystalline polyolefin.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: June 8, 1999
    Inventor: Steven David Hudson
  • Patent number: 5891539
    Abstract: A molded article or water-supply pipe free from causing dot-like projections or small-diameter blisters on the molded article surface when the molded article is brought into contact with chlorine-containing water is obtained from a resin composition containing a polyolefin resin, a pigment and a copolymer resin obtained from a monomer having an .alpha.,.beta.-unsaturated double bond and a dibasic acid having an unsaturated double bond or an anhydride thereof.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: April 6, 1999
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Izumi Nakane, Mitsuaki Nakata, Susumu Miyashita, Masashi Koide, Hirokazu Ootaka, deceased, Toshiaki Ootaka, heir
  • Patent number: 5891946
    Abstract: A resin mixture including a composition containing polypropylene that includes a portion insoluble in xylene, an isotactic pentad fraction of not less than 96.5% and an isotactic average chain length of not less than 90, 45.about.70 parts by weight; a polyolefin resin, 5.about.20 parts by weight; an inorganic filler selected from precipitated calcium carbonate, hydrated silicic acid, and hydrated calcium silicate, 5.about.30 parts by weight; and an inorganic filler selected from talc, mica, and potassium titanate, 5.about.30 parts by weight; is superior in scratch resistance, moldability, and balance of rigidity and impact resistance. In addition, a laminate having a layer of this mixture has superior gloss. This mixture and the laminate are useful in automobile parts, electric and electronic parts, packaging materials, etc.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: April 6, 1999
    Assignee: Showa Denko K.K.
    Inventors: Yasuhiro Nohara, Kazuyuki Watanabe
  • Patent number: 5863857
    Abstract: An adsorbent containing composition for use in an insulating glass unit is provided. The composition includes a depolymerized butyl rubber having a low viscosity average molecular weight which is a carrier for moisture and volatile organic chemical adsorbing materials. The composition is economical to produce and results in a composition which effectively desiccates a sealed insulating glass unit without the problem of chemical fogging.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: January 26, 1999
    Assignee: Adco Products, Inc.
    Inventors: Kathleen Louise Lamb, Brian Jonathan Briddell
  • Patent number: 5847042
    Abstract: A polyolefin resin composition of the present invention comprising 0.01 to 2.0 parts by weight of an anti-blocking agent per 100 parts by weight of a polyolefin resin, wherein said anti-blocking agent has substantially two or more maximum values in a weight-based particle size distribution and a difference between a particle diameter giving the largest maximum value and a particle diameter giving the smallest maximum value is not less than 3.0 .mu.m.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: December 8, 1998
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Satoru Hosoda, Satoru Koyama, Kenzo Chikanari
  • Patent number: 5847052
    Abstract: A process for producing a thermoplastic elastomer composition which comprises dynamically cross-linking an olefine copolymer rubber and an olefine plastic using a twin-screw extruder, said process being characterized in that said twin-screw extruder comprises one or more kneading zones within a dynamically cross-linking area and the first kneading zone among said zones comprises a screw with forward kneading disks having a minimum thickness (T.sub.min) of less than 13 mm per disk. Said method enables production of a thermoplastic elastomer composition of good quality regardless of the scale of production.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 8, 1998
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Tatsuo Hamanaka, Yuji Goto, Noboru Komine, Norimasa Oda, Masamichi Ishibashi
  • Patent number: 5807918
    Abstract: The invention describes both a method for bonding at least two elastomeric substrates together, wherein one of the substrates is a tire casing and another substrate is a tire tread, and an aqueous color changeable adhesive for effecting the bonding. The method includes the steps of buffing at least one surface of at least one of the substrates to an RMA 2 or RMA 3, applying the color changeable aqueous adhesive to the at least one surface, drying the adhesive for at least a period of time to permit an initial light grey color of the adhesive as applied to change to a flat black, and contacting the substrates under pressure to bond the substrates together. The color changeable aqueous adhesive includes at least a rubber latex emulsion, a tackifier, a pH adjustment agent, and a carbon black emulsion, wherein the carbon black functions both as a reinforcing agent and a visible color indicia means for evaluating the degree of dryness of the adhesive, which correlates to the degree of tack of the adhesive.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: September 15, 1998
    Assignee: Patch Rubber Company
    Inventor: Marlo Carter
  • Patent number: 5804661
    Abstract: An EPDM flashing composition comprises 100 parts by weight of an elastomeric polymer comprising from about 85 to 100 parts by weight of at least one ethylene-propylene-diene terpolymer having up to about 2 percent by weight crystallinity and from 0 to about 15 parts by weight of an ethylene-propylene-diene terpolymer having more than 2 percent by weight crystallinity; from about 40 to 120 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof, per 100 parts of the polymer; from about 40 to 105 parts by weight of a processing material and mixtures thereof, per 100 parts of the polymer; and from about 0.5 to 6 parts by weight of a cure package, per 100 parts of the polymer, the cure package comprising from about 0.1 to 1.25 parts by weight sulfur and from 0.4 to 5 parts by weight of at least one sulfur vulcanizing accelerator and being devoid of hexasulfides and thioureas.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: September 8, 1998
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: James A. Davis, Joseph J. Kalwara, Brian S. Alexander
  • Patent number: 5733621
    Abstract: An adhesive roofing tape is based on a combination of brominated butyl rubber and EPDM. A non-diene block terpolymer is interspersed in the cross-linked polymer network. A plasticizer and tackifier are included to provide resiliency and permanent tack. An important aspect of the invention is to use a high molecular weight polyisobutylene plasticizer and a peroxide curing system. Rapid crosslinking without concomitant rapid degradation of the brominated butyl rubber occurs and some limited degradation of the plasticizer contributes to surface tack. A method of making the adhesive roofing tape is also provided.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: March 31, 1998
    Assignee: Carlisle Companies Incorporated
    Inventors: Daniel John Cotsakis, Ronald Lynn Senderling, Nicholas John Shears
  • Patent number: 5717008
    Abstract: A composition for use in sculpturing, a sculpturing piece comprising the composition and a method for obtaining the piece, wherein the composition comprises 90 to 99% of a particulate material consisting of particles having a size from 0.05 to 2 mm, and a plastic binder from 1 to 10% by weight based on the total weight of the composition, each particle of the particulate material being encapsulated by a film layer of the plastic binder.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: February 10, 1998
    Inventor: Hector Luis Galano
  • Patent number: 5717020
    Abstract: A film and molded article are described, consisting of a thermoplastic based on a partially crystalline ethylene-propylene-diene terpolymer, a homo- and/or copolymer of an alkene, and a polymeric modifying agent, wherein the plastic possibly contains stabilizers, fillers, lubricants, colorants, and flame retardants, as well as conventional additives.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: February 10, 1998
    Assignee: J.H. Benecke AG
    Inventor: Walter Kopytko
  • Patent number: 5712341
    Abstract: Mixtures of high molecular weight polyisobutylene and thermoplastic polymers are prepared in an extruder by a process in which meterable, high molecular weight polyisobutylene is first metered into the extruder and homogenized in at least one kneading stage, heated and subjected to controlled molecular weight degradation and the thermoplastic polymer is then introduced into the polyisobutylene melt by means of a side feed and is subsequently homogenized together with said melt. The novel process is particularly suitable for the preparation of mixtures of high molecualr weight polyisobutylene and polyethylene.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: January 27, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Hofmann, Thomas Kessler, Bernd Lothar Marczinke, Sibylle Brosius, Karl-Heinz Fauth
  • Patent number: 5705568
    Abstract: New polypropylenes which are obtained by chemical degradation of elastic polypropylenes using organic peroxides.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: January 6, 1998
    Assignee: PCD Polymere Gesellschaft m.b.H.
    Inventors: Markus Gahleitner, Klaus Bernreitner, Norbert Hafner, Rudolf Wolfer, Wolfgang Neissl
  • Patent number: 5656691
    Abstract: A reformed polypropylene resin composition having high degree of fluidity and excellent impact strength and rigidity, and further having a melt flow rate of from 50 to 150 g/10 min. and establishing a relationship between the melt flow rate (X) and the Izod impact strength (Y) which satisfies a relation Y.gtoreq.-4.7878 log X+13.8829. The reformed polypropylene resin composition is obtained by blending 0.01 to 0.2 parts by weight of an organic peroxide and 0.05 to 1 part by weight of a crosslinking agent per 100 parts by weight of a total of 50 to 90 parts by weight of a polypropylene having a melt flow rate at 230.degree. C. of 10 to 70 g/10 min, 0 to 25 parts by weight of an olefin copolymer rubber, and 5 to 40 parts by weight of an organic filler, and by melt-kneading the mixture by using a biaxial extruder maintaining a temperature of 120.degree. to 200.degree. in the preceding stage of the screw and a temperature of 180.degree. to 270.degree. C.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: August 12, 1997
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yasuhiro Niki, Toshio Kobayashi, Takashi Arai
  • Patent number: 5656347
    Abstract: A laminate comprising a substrate, a continuous layer of a release coating on one surface thereof, and a layer of a silicone pressure sensitive adhesive on the surface of said release coating, said release coating being a mixture of a resin having perfluoro side chains and a film forming resin which binds said resin having said perfluoro side chains to said substrate, wherein said film forming resin is selected from the group consisting of polyester, polyamides, functionalized polyolefins, and nitrile polymers and copolymers.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: August 12, 1997
    Assignee: American Tape Co.
    Inventor: John K. Tynan, Jr.
  • Patent number: 5654370
    Abstract: Ethylene, alpha-olefin, non-conjugated bicyclic diene elastomeric polymers and/or polymer blends when compounded and formed into a calendered sheet, show surprising improvements for the combination in both green strength and peel adhesion in the unvulcanized state. Such green strength and peel adhesion provide benefits during calendering operations and subsequent joining of calendered sheets, while the compounded elastomeric polymers are in their green or unvulcanized state.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: August 5, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Sudhin Datta, Periagaram S. Ravishankar, Lawrence George Kaufman
  • Patent number: 5643999
    Abstract: Co-extrudable adhesive compositions which have excellent adhesion, and which bond well to ionomers, even after long aging, are formed by blending polyethylene with a very low density of 0.86 to 0.91 with polyethylene having a density of 0.91 to 0.935, together with a hydrocarbon elastomer. Acid grafting of any of the components is preferably present. More than an insubstantial amount of polyethylene with higher density than 0.935 is deleterious to initial or age-down peel strength of the adhesive ionomer bond, and is not part of the adhesive composition.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: July 1, 1997
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: I-Hwa Lee, Timothy Alan Libert
  • Patent number: 5632122
    Abstract: A pumpable, thermoplastic desiccated mastic capable of desiccating a sealed insulating glass unit.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: May 27, 1997
    Assignee: H.B. Fuller Licensing & Financing, Inc.
    Inventor: Anne Spinks
  • Patent number: 5633010
    Abstract: Hydrocolloid adhesive compositions are disclosed comprising a hydrophobic unsaturated aliphatic homopolymer, a compatible tackifier, and at least one hydrocolloid absorbent. The compositions have enhanced resistance to breakdown by body fluids, adjustable absorbency, improved adhesive and cohesive properties, as well as a reduced tendency to leave an adhesive residue after application. Also disclosed are wound dressings, ostomy or prosthesis adhesives, methods of using wound dressings, and methods for forming the hydrocolloid adhesive compositions.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 27, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Yen-Lane Chen
  • Patent number: 5631313
    Abstract: A new stable liquid suspension of a non soluble particulate material, and a method of preparation of same are provided. Such compositions comprise at least one oil, one oil soluble resin and a non oil soluble particulate material mixed together In the appropriate quantities and conditions.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: May 20, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Marshall D. Bishop, John E. Hostettler
  • Patent number: 5587247
    Abstract: A resin composition for extrusion molding which has a melt flow rate (MFR) of from 0.5 to 30 g/10 min., having (A) 1 to 80 parts by weight of an ethylenic polymer which gives an endothermic peak in a temperature range of from 80.degree. to 120.degree. C. in a temperature rise thermogram as measured by a differential scanning calorimeter, has a melt flow rate (MFR) of from 0.5 to 50 g/10 min., and is prepared by high-pressure radical polymerization, (B) 5 to 80 parts by weight of a copolymer of ethylene and an .alpha.-olefine containing 3 to 12 carbon atoms which gives at least one endothermic peak in a temperature range of from 110.degree. to 130.degree. C. in the temperature rise thermogram as described above, has a melt flow rate (MFR) of from 0.5 to 30 g/10 min. and a density of from 0.900 to 0.935 g/cm.sup.3 and (C) 5 to 70 parts by weight of the copolymer of ethylene and an .alpha.-olefin containing 3 to 12 carbon atoms which has a melt flow rate (MFR) of from 0.5 to 30 g/10 min. and a density of from 0.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: December 24, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kohji Kubo, Shoichi Nezu, Fumio Ishibashi, Hiroyuki Harada, Yuji Shigematsu
  • Patent number: 5585431
    Abstract: A thermoplastic elastomer powder composition for powder molding, comprising 100 parts by weight of the following thermoplastic elastomer powder (A) and 0.05 to 20 parts by weight of a fine powder having an average particle diameter of 30 .mu.m or less:(A) (i) a powder of a thermoplastic elastomer comprising a composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin or (ii) a powder of a thermoplastic elastomer comprising a partially crosslinked composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, the thermoplastic elastomer powder having a complex dynamic viscosity .eta.*(1), as measured at a frequency of 1 radian/sec and at 250.degree. C., of 1.5.times.10.sup.5 poise or less and a Newtonian viscosity index n, calculated from the following formula by using the above-mentioned complex dynamic viscosity .eta.*(1) and the complex dynamic viscosity .eta.*(100) measured at a frequency of 100 radian/sec of 0.67 or less:n=(log.eta.*(1)-log.eta.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: December 17, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshio Igarashi, Sueharu Shinohara, Masayuki Tatsumi, Tadashi Hikasa, Hiroaki Mendori
  • Patent number: 5580265
    Abstract: Disclosed are sealant compositions having excellent slump and spew resistant, even at relatively high operating temperatures for electrical connectors. The sealants, which are flowable at such elevated temperatures, comprise two essential components: elastomeric thermoplastic polymer, preferably an organic polymer composite comprising diblock and triblock copolymers, and extender for the polymer. The extender may comprise a primary and a secondary extender, such as polybutene oil and mineral oil, respectively.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: December 3, 1996
    Assignee: The Whitaker Corporation
    Inventors: Francis F. Koblitz, Thomas J. Lynch, Ricky C. Mellinger
  • Patent number: 5571582
    Abstract: The present invention relates to a container or bag for garbage which repels animals such as cats, dogs, rats, and crows. The article is made from a composition comprising a polyolefin having 10 to 7000 ppm by weight of a compound selected from methyl salicylate, ethyl salicylate, propyl salicylate, n-butyl salicylate, iso-butyl salicylate, iso-amyl salicylate, and menthol.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: November 5, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Masahiko Katoh
  • Patent number: 5571868
    Abstract: Ethylene, alpha-olefin, non-conjugated bicyclic diene elastomeric polymers and/or polymer blends when compounded and formed into a calendered sheet, show surprising improvements for the combination in both green strength and peel adhesion in the unvulcanized state. Such green strength and peel adhesion provide benefits during calendering operations and subsequent joining of calendered sheets, while the compounded elastomeric polymers are in their green or unvulcanized state.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: November 5, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Sudhin Datta, Periagaram S. Ravishankar, Lawrence G. Kaufman
  • Patent number: 5548008
    Abstract: A radiation-resistant polypropylene resin composition is disclosed which comprises a polypropylene having a substantially syndiotactic structure, and if desired, a phosphorus-containing anti-oxidant, an amine-containing anti-oxidant and/or a nucleating agent. Molded articles obtained from this resin composition can be utilized as containers for foods and medicines, and their physical properties scarcely deteriorate during sterilization by radiation.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: August 20, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tadashi Asanuma, Shigeru Kimura, Nobutaka Uchikawa, Tetsunosuke Shiomura
  • Patent number: 5548014
    Abstract: Disclosed are hot melt adhesives comprising tackifier and a high M.sub.w, narrow MWD, narrow CD ethylene/alpha-olefin copolymer(s) and a low M.sub.w, narrow MWD, narrow MWD ethylene/alpha-olefin copolymer prepared with either supported or unsupported cyclopentadienyl derivatives of Group IV and catalysts for applications in hot melt adhesives, particularly in automotive product assembly, packaging and food packaging. These ethylene copolymers have a M.sub.w ranging from about 20,000 to about 100,000, an MWD of less than 6 and 3 to 17 mole percent comonomer, and composition distribution breadth index above 70 percent. These ethylene copolymer blends have a M.sub.w ranging from about 20,000 to about 100,000 and an MWD of less than 6. In addition, the copolymer blends have comonomer mole percent ranging from about 3 to about 17.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: August 20, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Mun F. Tse, Virginia R. Cross, Barry C. Trudell
  • Patent number: 5532282
    Abstract: A composition useful for rotational molding and method of rotomolding are provided. The composition advantageously includes particulate matter of significantly different sizes. A first polymer is provided as particulate matter of one size, and a second polymer is provided as particulate matter of a smaller size. During rotomolding, the first polymer forms an inner layer and the second polymer forms an outer layer. Beneficially, foaming may be provided during rotomolding to foam the inner layer.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: July 2, 1996
    Assignee: Neeco, Inc.
    Inventor: Donald G. Needham
  • Patent number: 5530055
    Abstract: A polyolefin-based composition useful for rotational molding, is provided. A polyethylene resin blend is beneficially used. The composition advantageously includes a nucleating agent. Rotomolded containers having improved resistance to puncture are beneficially provided. Also provided is a method of rotomolding the composition.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: June 25, 1996
    Inventor: Donald G. Needham