Only Two Aryl-oh Groups Patents (Class 524/343)
  • Patent number: 6479580
    Abstract: Polyolefin thermoplastic elastomers are disclosed which are prepared by; (I) mixing (A) a thermoplastic resin comprising more than 50 percent by volume of a polyolefin resin, said thermoplastic resin having a softening point of 23° C. to 300° C.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: November 12, 2002
    Assignee: Dow Corning Corporation
    Inventors: Igor Chorvath, Dean Curtis Gray, Michal Kang-Jen Lee, Thomas John Tangney
  • Patent number: 6451893
    Abstract: A new formulation for producing nitrile gloves has been developed. The resulting glove shows following outstanding characteristics: stress at six minutes greater than 50% of its initial value; ultimate tensile strength and elongation well above ASTM requirements; and much lower modulus than almost all the nitrile gloves currently commercially available. The unique formulation is zinc oxide free and is vulcanized from 5 to 60 minutes at temperatures ranging from 300° F to 400° F.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: September 17, 2002
    Assignee: Microflex Corporation
    Inventor: Jian Tao
  • Publication number: 20020082375
    Abstract: A continuous bulk polymerization and esterification process includes continuously charging into a reaction zone at least one ethylenically unsaturated acid-functional monomer and at least one linear or branched chain alkanol having greater than 11 carbon atoms. The process includes maintaining a flow rate through the reaction zone sufficient to provide an average residence time of less than 60 minutes and maintaining a temperature in the reaction zone sufficient to produce a polymeric product incorporating at least some of the alkanol as an ester of the polymerized ethylenically unsaturated acid-functional monomer. The polymeric product is used in various processes to produce water-based compositions including emulsions and dispersions such as oil emulsions, wax dispersions, pigment dispersions, surfactants and coatings which contain the polymeric product.
    Type: Application
    Filed: October 29, 2001
    Publication date: June 27, 2002
    Inventors: Kevin M. Andrist, John E. Blasko, Glenn C. Calhoun, Frederick C. Hansen, Dean R. Hellwig, Kurt A. Hessenius, Steven M. Hurley, D. Sunil Jayasuriya, Matthew G. Lee, Stephen J. Maccani, H. Thomas Mills, Gregory R. Peterson, Paul E. Sandvick, Dennis M. Wilson, John P. Wiruth
  • Patent number: 6391951
    Abstract: The invention provides a copolymer of propylene and pentene, together with a process for producing such copolymer and a polymer composition. In the process, propylene and pentene are reacted in a reaction zone at a pressure of 60 kg/cm2 and temperature of 0-100° C. for 20-480 minutes in the presence of a Ziegler-Natta catalyst or catalyst system. The polymer composition has several components, namely the above copolymer, a phenolic stabilizer, an organic phosphite stabilizer, a thioether stabilizer and at least one metal salt of a higher aliphatic acid, with the proviso that at least one of the organic phosphite stabilizer, the thioether stabilizer and said salt must be present, so that up to two thereof can optionally be omitted.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 21, 2002
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: Dawid Johannes Joubert, Antonie Hermanus Potgieter, Ignatius Hendrik Potgieter, Ioan Tincul
  • Patent number: 6365657
    Abstract: The rubber product has similar stretchability to the human skin, so that it is useful for application to items to be put into direct contact with the skin. The rubber product is provided with 200% modulus M200 of equal to or less than 15 kgf/cm2 (14.7×105 Pa), and modulus ratios of 200% modulus M200) to 100%. modulus (M100) M200/M100, 300% modulus (M300) to 200% modulus (M200) M300/M200, and 400% modulus (M400) to 300% modulus (M300) M400/M300 all of which are equal to or less than 2.0.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 2, 2002
    Assignee: Bridgestones Corporation
    Inventors: Hideo Goto, Makoto Nakamura
  • Patent number: 6339119
    Abstract: The present invention is directed to a golf ball containing a cover layer and a core layer, where the core layer is molded from a scorch retarding composition comprising a scorch retarding peroxide, an elastomeric polymer and a cross-linking agent. Preferably, the scorch retarding peroxide is present in an amount sufficient to delay cross-linking of the elastomeric polymer during core layer formation for a time sufficient to substantially prevent backrinding on the molded core layer. The golf balls of the invention may further comprise at least one intermediate layer interposed between the cover layer and the core layer, at least one of the layers being molded from a scorch retarding composition comprising a scorch retarding peroxide, an elastomeric polymer and a cross-linking agent. A method of making such golf balls is also disclosed.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: January 15, 2002
    Assignee: Acushnet Company
    Inventors: Derek A. Ladd, Steven M. Gosetti
  • Publication number: 20010044488
    Abstract: Herein is disclosed a flame-retarded thermoplastic resin composition which comprises an original flame-retarded thermoplastic resin composition comprising certain amounts of a thermoplastic resin and of a brominated flame-retardant, and, in combination therewith, a certain amount of a dolomite compound, or in addition thereto, a certain amount of at least one compound selected from a hydrotalcite, a zinc-substituted hydrotalcite compound, or a zeolite compound, which flame-retarded thermoplastic resin composition of the present invention are remarkably improved in heat stabilizing effects as compared with the original flame-retarded thermoplastic resin composition.
    Type: Application
    Filed: February 22, 2001
    Publication date: November 22, 2001
    Applicant: AJINOMOTO CO. INC.
    Inventors: Naoki Yasuda, Kyuji Ihara, Takeo Tanaka, Masaharu Akitsu
  • Patent number: 6300395
    Abstract: A hydrophilic coating having excellent hydrophilicity, which can prevent offensive odor generation, and which has a good antibacterial performance and formability, is formed on an aluminum-containing metal material by coating an aqueous hydrophilization treating liquid containing (A) a glycidyl group-containing, water-soluble organic compound; (B) a water-soluble polymeric or polymerizable compound having a tert-amino group and at least one hydrophilic functional group selected from sulfonic, phosphonic, carboxyl, polyalkyleneglycol, hydroxyl and amide groups; and (C) an antibacterial agent not decomposing at 100° C. or lower, on an aluminum-containing metal material; and heat-drying the coated liquid.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: October 9, 2001
    Assignee: Nikon Parkerizing, Co., Ltd.
    Inventors: Ryosuke Sako, Tomohiro Ohsako, Tatsuo Hibino
  • Patent number: 6231978
    Abstract: A composition comprising: polyethylene; as a scorch inhibitor, 2,4-diphenyl-4-methyl-1-pentene; as a cure booster, 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; and an organic peroxide.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: May 15, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6214081
    Abstract: The hot repair mix according to the present invention comprises bisphenol as an auxiliary fluidizing agent in an amount of 1 to 20 weight parts and a material to form carbon bond in hot working process in an amount of 5 to 40 weight parts to 100 weight parts of a refractory material. It has satisfactory properties such as spreading property, hardenability, adhesive property, property of the finished portion in hot working process, and this leads to improvement of durability of the baking material. Moreover, there is no change over time such as solidification, sedimentation separation, etc. in summer season, and it can be easily transported and stored. Because of easy handling and good workability of this material, baking operation can be accomplished within short time, and it is very useful as a hot repair mix for repairing various types of refinery furnaces, molten metal containers, etc. in hot working process.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: April 10, 2001
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Hiroshi Takenaka, Shuzo Horita, Toshihiko Akizuki, Yoshiaki Osaki
  • Patent number: 6191246
    Abstract: The invention provides a polymer which is a polymerization product obtained by polymerizing at least ethylene, 1-pentene and 1-hexene; and a process for producing a polymer by reacting at least ethylene, 1-pentene and 1-hexene in a reaction zone at a pressure between atmospheric and 60 kg/cm3 and at a temperature between 30° C. and 120° C., in the presence of a catalyst system. The invention also provides a polymer composition which comprises a terpolymer of ethylene, 1-pentene and 1-hexene, a phenolic stabilizer component, a metal salt of a higher aliphatic acid, and, optionally, at least one organic phosphite stabilizer.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: February 20, 2001
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: Dawid Johannes Joubert, Ignatius Hendrik Potgieter, Ioan Tincul, Peter Loggenberg
  • Patent number: 6143814
    Abstract: The invention relates to a fusible stabiliser combination for thermoplastic polymers with the features of the main claim. The invention also relates to a process for the preparation of said combination, and thermoplastic polymers produced by the use thereof.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: November 7, 2000
    Assignee: Chemson Polymer-Additive Gesellschaft mbH
    Inventors: Michael Schiller, Hartmut Hensel, Charles Videler, Emil Lattacher, Paul Ebner, Klaus Dolleschal, Karoline Pacher, Claudia Umfahrer
  • Patent number: 6136902
    Abstract: To provide a polyacetal resin composition having an excellent corrosion inhibiting effect on metals, particularly reduced in the adverse effect on magnetic tapes or the like, and suitable for use in producing component parts of a magnetic tape cassette such as a reel hub or tape guide, 100 parts by weight of a polyacetal resin (A) is blended with 0.05 to 5 parts by weight of an antioxidant (B), 0.001 to 5 parts by weight of a specified nitrogen-containing compound (C), and 0.001 to 3 parts by weight of a boric acid compound.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: October 24, 2000
    Assignee: Polyplastics Co., Ltd.
    Inventors: Yoshihito Fukasawa, Sachio Anada
  • Patent number: 6060545
    Abstract: Organic materials having excellent stability against oxidative, thermal or light-induced degradation comprise as stabilisers (i) at least one compound of formula I ##STR1## wherein the general symbols are as defined in claim 1, and (ii) calcium lactate and/or calcium stearoyl-2-lactylate.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: May 9, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Bernard Gilg
  • Patent number: 5981073
    Abstract: Novel dibenzoylresorcinol-based compounds are disclosed wherein the dibenzoylresorcinol is bonded to the residue of either an alcohol or a carboxylic acid group, via a methylene carboxylate linking group; and wherein the dibenzoylresorcinol is bonded directly to a substituted or unsubstituted aryl group which does not include a pendent hydroxyl group. The groups attached to the dibenzoylresorcinol may contain a wide variety of functional sites which permit further reaction, e.g., copolymerization. The described compounds are very useful as UV light absorbers and may be used to form improved coating compositions which usually include a transparent, polymeric matrix material. The coating compositions may be applied to various substrates, e.g., thermoplastics, to afford a selection of enhanced properties, such as UV light resistance and abrasion resistance.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: November 9, 1999
    Assignee: General Electric Company
    Inventors: James Edward Pickett, Wen P Liao, Amy Kathleen Simonian, Gregory Ronald Gillette
  • Patent number: 5869185
    Abstract: A polycarbonate substrate coated with an acrylic coating containing at least one polybenzoylresorcinol, and optionally a silicone hardcoat on the acrylic coating, wherein said at least one polybenzoylresorcinol has the formula ##STR1## wherein each A is independently a substituted or unsubstituted monocyclic aromatic radical wherein any substituents are hydrogen, halogen, alkoxy, C.sub.1-8 alkyl, or hydroxy, and R is hydrogen or a linear or branched aliphatic radical having less that about 10 carbon atoms.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: February 9, 1999
    Assignee: General Electric Company
    Inventors: Steven Roger Bahr, James Edward Pickett, Karen Kueck Webb
  • Patent number: 5804623
    Abstract: Recycled plastics, predominandy thermoplastics, from domestic, commercial and industrial waste can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and a metal salt of a fatty acid.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: September 8, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kurt Hoffmann, Heinz Herbst, Rudolf Pfaendner, Hans-Jurgen Sander, Franciszek Sitek
  • Patent number: 5643985
    Abstract: Recycled plastics, predominanty thermoplastics, from domestic, commercial and industrial waste can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and a metal salt of a fatty acid.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: July 1, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Kurt Hoffmann, Heinz Herbst, Rudolf Pfaendner, Hans-Jurgen Sander, Franciszek Sitek
  • Patent number: 5635553
    Abstract: A resin composition including (A) a mixture of one or more polyamide resins and one or more ethylene/vinyl alcohol copolymers; (B) 2,2'-methylenebis(4-methyl-6-tert-butylphenol); and (C) at least one polyalkyleneglycol is provided. The resin composition exhibits improved flowability during processing and remarkably decreased possibility of fish eye gel formation, thereby allowing for the production of formed products having a good external appearance.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: June 3, 1997
    Assignees: Sumitomo Chemical Co., Ltd., Ube Industries, Ltd.
    Inventors: Kanako Fukuda, Tetsuo Yamaguchi, Michiaki Yoshidomi, Yutaka Yamaguchi
  • Patent number: 5585425
    Abstract: A thermochromic opaque/transparent composition is capable of exhibiting change in transparency together with change in color in response to temperature variation, a laminate member employing the same, and a three-dimensional article capable of concealing and revealing the interior, utilizing the laminate member. A thermochromic opaque/transparent composition is composed of dispersion, in vinyl chloridevinyl acetate copolymer matric resin, which has been obtained by blending with hindered amine compound selected from piperidine derivatives within a particle size range of 0.1 to 2.0 .mu.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: December 17, 1996
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Tsutomu Kito, Kuniyuki Senga, Hiroyuki Hayashi
  • Patent number: 5571854
    Abstract: A phenolic resin molding material for molding at lower than normal pressures, comprising as resin components a combination of (A) a crystalline phenolic compound having two or more hydroxyphenyl groups and (B) a compound having two or more hydroxyl groups in the benzene ring, or (A), (B) and (C) a phenolic resin.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: November 5, 1996
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Tamotsu Ishida, Tsukasa Sakamoto, Hidenori Saito
  • Patent number: 5487425
    Abstract: The present invention provides a composition for recovery of petroleum and gas, which comprises (a) a copolymer having a molecular weight of 100,000 or more, composed of 30-75 mole % of N-vinylpyrrolidone unit, 5-70 mole % of (meth)acrylamide unit and 0-20 mole % of (meth)acrylic acid unit or a salt thereof, (b) a water-soluble aldehyde, (c) a phenol compound, and (d) water. This composition can form a gel in a required gelling time even at high temperatures and even in the presence of bivalent metal ions and accordingly can be used for efficient recovery of petroleum and gas.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: January 30, 1996
    Assignees: Nitto Chemical Industry Co., Ltd., Japan Petroleum Exploration Co., Ltd.
    Inventors: Takamasa Ohno, Keietsu Kato, Yoshiyuki Yamaguchi, Masami Murakami, Shogo Suzuki, Shoichi Kanda, Tsuyoshi Nakagawa
  • Patent number: 5473016
    Abstract: A polyolefin-based matte film or sheet can be prepared from a polymeric blend of the preset invention comprising a propylene polymer or copolymer as component (A), a specific ethylene-.alpha.-olefin copolymer (E.alpha.O, so-called "super low-density polyethylene") as component (B), and a high-pressure radical polymerization process ethylene polymer or copolymer and/or a modified polyolefin-based resin as component (C). The above blend of the present invention may further comprise an inorganic filler as component (D) and a flame retardant as component (E). The matte films or sheets prepared from these polymeric blends are excellent in tensile modulus, flexibility, impact resistance, thermal resistance, laminating properties, flame resistance, chalking resistance, covering power, scratch resistance, and widely used for fabricating adhesive tapes, covers or cases for stationery, fashion bags, sheets for interior finish work in construction and automobile industries, and sheets for dressing steel plates.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: December 5, 1995
    Assignee: Nippon Petrochemicals Co., Ltd.
    Inventors: Koichi Fujii, Koichi Komaki, Shigeki Komori, Minoru Tajima
  • Patent number: 5473003
    Abstract: Compositions comprising an organic material which is sensitive to thermal, oxidative and/or actinic degradation and at least one compound of the formula I ##STR1## in which Z.sub.1 and Z.sub.2 independently of one another are C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, phenyl-C.sub.1 -C.sub.4 alkyl or (C.sub.1 -C.sub.4 alkyl)phenyl andp is a number from 4 to 18,with the proviso that Z.sub.1 and Z.sub.2 are not simultaneously tertiary alkyl radicals. Some of the compounds of the formula I are novel.The compounds of the formula I can also be employed as stabilizers as a mixture with compounds of the formula VI and/or of the formula VII ##STR2## in which n and the radicals R.sup.1, R .sup.1 ' and A are as defined in claims 14 and 15.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: December 5, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Rita Pitteloud, Paul Dubs, Bernard Gilg
  • Patent number: 5434203
    Abstract: Powdery mixture of from 1 to 99 weight % of a graft polymer of resin-forming monomers on a rubber and from 99 to 1 weight % of a bisphenol and the use thereof for improving chemical materials.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: July 18, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Holger Lutjens, Karl-Erwin Piejko
  • Patent number: 5432216
    Abstract: A polyacetal resin composition which comprises (A) 100 parts by weight of a polyacetal resin, (B) 0.1 to 1.5 parts by weight of at least one kind selected from the group of light stabilizers represented by the following formula (1) ##STR1## wherein two X's are the same or different and each denotes a hydrogen atom or a methyl group, (C) 0.1 to 1.5 parts by weight of an ultraviolet light absorber, (D) 0.1 to 3 parts by weight of polyethylene, (E) 0.1 to 5 parts by weight of polyethylene glycol, and (F) 0.1 to 10 parts by weight of a polymer of a methacrylate ester. This polyacetal resin composition is excellent in weather resistance and molding processability.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: July 11, 1995
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Jian Yu, Satoshi Nagai, Ken-ichi Shimizu, Toshiaki Okuzono
  • Patent number: 5395869
    Abstract: The cycloolefin resin compositions of the present invention comprise a thermoplastic resin containing an olefin polymer having an alicyclic structure, specific stabilizers selected from phenolic stabilizers, organic thioether stabilizers, organic phosphite stabilizers, UV-ray absorbers and hindered amine stabilizers. The cycloolefin resin compositions show excellent thermal aging resistance and weathering resistance by the use of specific stabilizers, and therefore they are favorably used for forming optical instrument parts. Furthermore, the thermoplastic resin may be prepared from an olefin polymer having an alicyclic structure and a flexible polymer or flexible polymers. The incorporation of the flexible polymer especially improves the mechanical strength of the resultant products, and therefore the resin compositions are favorably used for machine parts, electronic parts, automobile parts, etc.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: March 7, 1995
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Keiji Kawamoto, Tetsuji Kasai, Hideki Sakai
  • Patent number: 5331034
    Abstract: In plastic molding compositions, in particular those based on olefin polymers, which contain phenolic stabilizers and metal ions as catalyst residues, the discoloration at the processing temperature is reduced if they contain triglycerol or ditrimethylolpropane as catalyst deactivators.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: July 19, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Pfahler, Georg Schmailzl
  • Patent number: 5219908
    Abstract: This invention relates to polyarylene sulphides (PAS) containing certain nitro compounds with reduced flash formation.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: June 15, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Burkhard Kohler, Bahman Sarabi, Sabine Dorf, Hans-Detlef Heinz, Friedrich Jonas
  • Patent number: 5166246
    Abstract: Polyphenylene ether- polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: November 24, 1992
    Assignee: General Electric Company
    Inventors: Robert R. Gallucci, John A. Rock
  • Patent number: 5164435
    Abstract: A stabilized thermoplastic resin composition is provided which comprises the following components (i), (ii) and (iii):(i) 100 parts by weight, based on the total amount of the following (A), (B) and (C), of a mixture comprising (A) about 10-100% by weight of a polyphenylene ether, (B) 0-about 90% by weight of an alkenyl aromatic resin, and (C) 0-about 90% by weight of a crystalline thermoplastic resin, total amount of (A) and (B) being at least about 15% by weight of the total amount of (A), (B) and (C),(ii) 1-50 parts by weight of an alkenyl aromatic elastomer (non-hydrogenated), and(iii) a stabilizer comprising (D) 0.01-5 parts by weight of a sulfur compound and (E) 0.01-5 parts by weight of at least one phenol compound.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: November 17, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroomi Abe, Kenji Nagaoka, Yasuro Suzuki, Takashi Sanada
  • Patent number: 5162406
    Abstract: A stabilized composition of matter comprises: (a) at least one block polymer comprising at least one non-elastomeric block and at least one polybutadiene block and (b) a stabilizing composition in an amount effective to improve heat or oxidative stability of the block polymer, said composition comprising (i) at least one hydroxyphenylalkylenyl isocyanurate and (ii) at least one polyphenylene diphosphonite. An alkylidene bisphenol is optionally added to achieve improved color stability.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: November 10, 1992
    Assignee: The Dow Chemical Company
    Inventors: Wendell W. Meyer, Grace Y. Lo
  • Patent number: 5147911
    Abstract: Compounds of formula I ##STR1## wherein n is 2-4, R.sub.1 is alkyl, cycloalkyl, phenylalkyl, phenyl or a radical of formula II ##STR2## R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, alkyl, cycloalkyl, phenylalkyl or aryl, or R.sub.3 and R.sub.4 together are alkyl, R.sub.5 and R.sub.6 are independently hydrogen, alkyl, cycloalkyl or phenylalkyl, R.sub.7 is hydrogen, alkyl or a group of the formula --(CH.sub.2).sub.k COOR.sub.8, where k is 0-2 and R.sub.8 is hydrogen or alkyl, and T is an n-valent hydrocarbon radical which may be interrupted by heteroatoms, are useful stabilizers for substrates subject to the deleterious effects of oxygen, heat and/or actinic radiation.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: September 15, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Hofmann, Paul A. Odorisio, Glen T. Cunkle, Don Sabrsula
  • Patent number: 5147910
    Abstract: Substituted 3H-1,3,2-oxazaphospholidines of formula I ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, alkyl, cycloalkyl, phenylalkyl or aryl, n is 1 to 4 and T is an n-valent aliphatic or aromatic hydrocarbon radical are effective in stabilizing organic materials against the deleterious effects of oxygen, heat and/or actinic radiation.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: September 15, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul A. Odorisio, James L. Hyun, Sai P. Shum, Raymond Seltzer
  • Patent number: 5147909
    Abstract: Substituted 1,3,2-benzoxazaphospholidines of formula I ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen, alkyl, cycloalkyl, phenylalkyl or aryl, n is 1 to 4, and T is an n-valent aliphatic or aromatic hydrocarbon radical are effective in stabilizing organic materials against the deleterious effects of oxygen, heat and actinic radiation.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: September 15, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
  • Patent number: 5128397
    Abstract: Hot melt adhesive compositions stabilized against thermal degradation, discoloration, skin formation and substantial viscosity changes, said adhesives being based on ethylene-vinyl acetate copolymer and a hydrocarbon tackifying resin and containing a stabilizer system of a hindered phenol antioxidant, a phosphite costabilizer and an acid scavenger.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: July 7, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Douglas W. Horsey, Ambelal R. Patel
  • Patent number: 5128401
    Abstract: A polymeric molding compositon based on aliphatic polyamides contains as additives polyarylene sulfides and polyphenolic compounds free from tertiary alkyl group ortho to the phenolic-OH groups is useful in producing molded articles such as films, fibers and shaped objects.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: July 7, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Detlef Heinz, Aziz El-Sayed, Werner Kloker, Ralf Dujardin
  • Patent number: 5124388
    Abstract: Disclosed are films, containers and container liners comprising a copolyester having repeat units from terephthalic acid and 1,4-cyclohexanedimethanol, and a hindered phenolic antioxidant.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: June 23, 1992
    Assignee: Eastman Kodak Company
    Inventors: Wayne P. Pruett, Charles W. Ramsey, Sarah J. Webb, Joey C. Carico
  • Patent number: 5118735
    Abstract: A composition comprising (A) (i) a crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer comprising alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has more than two reactive sites; or (ii) a crosslinked or crosslinkable linear poly(organohydrosiloxane) polymer having at least 30% of its .tbd.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: June 2, 1992
    Assignee: Hercules Incorporated
    Inventor: Julia S. Burnier
  • Patent number: 5102939
    Abstract: Stabilizing, synergistically acting mixtures of phenolic antioxidants and sulphur-containing elastic-thermoplastic graft products having terminal thioalkyl groups.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: April 7, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 5017633
    Abstract: A filled polyolefin, particularly polypropylene, containing a sterically hindered phenol antioxidant and a compound of formula I and/or II ##STR1## in which R is unsubstituted phenyl or phenyl substituted by 1 or 2 C.sub.1-12 alkyl groupsn is 0 or 1 andA is a monofunctional or difunctional residue of a phenyl, diphenyl, diphenyl ether, diphenylmethane or dibenzofuran,as processing stabilizer has good long-term stability even in the absence of conventional sulphur-containing co-stabilizers.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: May 21, 1991
    Assignee: Sandoz Ltd.
    Inventor: Guenther Tscheulin
  • Patent number: 4970272
    Abstract: Polyphenylene ether-polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: November 13, 1990
    Assignee: General Electric Company
    Inventor: Robert R. Gallucci
  • Patent number: 4966960
    Abstract: A process and nylon release sheet for manufacturing printed circuit boards from epoxy prepregs is disclosed. In such process layers of the prepregs are separated from one another by a release sheet. The release sheet comprises an aliphatic or aromatic nylon or nylon copolymer which is a condensation product of a dicarboxylic acid and a diamine. The nylon film contains a heat stabilizer and an inorganic particulate antiblock additive, e.g. diatomaceous earth, glass beads, amorphous silica, talc, mica and molybdenum disulphide. The nylon may be toughened by the addition of a phosphorus-containing catalyst or an epoxide.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: October 30, 1990
    Assignee: Du Pont Canada Inc.
    Inventors: Peter A. Sipos, Erica M. Besso
  • Patent number: 4963606
    Abstract: This invention relates to a styrenic polymer-based thermoplastic formulation containing a brominated cycloaliphatic flame retardant and a thermal stabilizer system comprising an organotin stabilizer, a hindered phenolic antioxidant and, optionally, a polyhydroxy aliphatic compound.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: October 16, 1990
    Assignee: Ethyl Corporation
    Inventor: Robert A. Schleifstein
  • Patent number: 4942195
    Abstract: Thus, the present invention is directed to hot melt adhesive compositions suitable for bookbinding application comprising tackifying resins, at least one wax diluent and a substantially radial styrene-butadiene block copolymer, the copolymer having a styrene content greater than about 35% by weight, a modulus at 300% elongation of at least 4.5 MPa and a solution viscosity less than about 1000 cps.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: July 17, 1990
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Thomas P. Flanagan, Paul Puletti
  • Patent number: 4918124
    Abstract: Stabilizing mixtures, acting synergistically, of phenolic antioxidants and sulphur-containing polymers having terminal thioalkyl groups.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: April 17, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 4898901
    Abstract: Long chain N-alkyl-alpha-alkyl nitrones represent particularly valuable process stabilizers for polyolefin compositions. The nitrone derived from the long chain alkyl mixture present in di(hydrogenated tallow)amine is especially useful for this purpose.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: February 6, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Ramanathan Ravichandran, Stephen D. Pastor, Raymond Seltzer, Ambelal R. Patel
  • Patent number: 4885318
    Abstract: Flame retardant compositions comprise linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a minor quantity, relative to the polymer, of certain flame retardants containing an organo halide.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: December 5, 1989
    Assignee: Shell Oil Company
    Inventors: Richard L. Danforth, Darlene G. Smith
  • Patent number: 4879141
    Abstract: The present invention includes:(i) a method for making a coated particulate comprising the steps ofheating until liquid a polyolefin wax;fluidizing with a hot gas, additive particles selected from the group comprising an antioxidant, a processing stabilizer, an acid acceptor, and mixtures thereof;spraying the liquid polyolefin wax on the heated fluidized additive particles; andmaintaining the fluidized additive particles at a temperature which is sufficient to prevent the formation of fibers and adequate to form discrete substantially coated additive particles;(ii) a coated particulate made by the above process; and(iii) a process for providing in-reactor stabilization of a polyolefin during a polymerization reaction, using the coated additives prepared by the above described method.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: November 7, 1989
    Assignee: Shell Oil Company
    Inventor: Ananda M. Chatterjee
  • Patent number: 4874804
    Abstract: Hot melt packaging adhesive compositions consisting essentially of 35 to 45% by weight of an ethylene n-butyl acrylate copolymer containing 25-45% by weight, preferably 30 to 40% n-butyl acrylate and having a melt index of at least 50; 35 to 55% of a terpene phenolic tackifier; and 10 to 20% by weight of a high melting synthetic wax provide adhesives characterized by an excellent balance of high and low temperature performance without sacrifice to machinability or thermal stability.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: October 17, 1989
    Assignee: National Starch and Chemical Corporation
    Inventors: Francis X. Brady, Thomas F. Kauffman