Ingredient Is Organic Silicon Compound Patents (Class 521/86)
-
Patent number: 6528548Abstract: An object is to provide a synthetic thermoplastic resin extruded foams having excellent thermal insulating properties and a method for producing the same, in which environment friendly water is used as a blowing agent in the most effective way while reducing the amount of blowing agents that affect the environment, and it is feasible to improve the production ratio of small cells in foams made up of large cells and small cells. A synthetic thermoplastic resin extruded foams having a foam density of 15 to 50 kg/m3 and an excellent cell structure which has an average call size of 0.7 mm or smaller or which mainly comprises small cells having a cell size of 0.25 mm or smaller and large cells having a cell size of 0.3 to 1 mm; and a method for producing the foams are provided, wherein the foams contains 0.2 to 10 parts by weight of bentonite, and water is used as a blowing agent.Type: GrantFiled: September 13, 2001Date of Patent: March 4, 2003Assignee: Kaneka CorporationInventors: Takahiro Hayashi, Kenkichi Tanaka, Toshiya Ito, Takahiro Tayauchi
-
Patent number: 6518324Abstract: Polymer foams containing nanoclay are provided, the foams having improved properties such as thermal insulation values.Type: GrantFiled: November 28, 2000Date of Patent: February 11, 2003Assignee: Atofina Chemicals, Inc.Inventors: Jiri E. Kresta, Jinhuang Wu, Richard M. Crooker
-
Patent number: 6451866Abstract: Disclosed is a spongy rubber body or, in particular, spongy silicone rubber body useful for forming the semiconductive rubber layer of a rubber roller in photocopying machines and the like as well as for use as a spongy rubber puff in cosmetic makeup. Characteristically, the inventive spongy rubber is compounded with, besides ordinary ingredients in spongy silicone rubbers, a specified amount of globular particles of, preferably, a silicone rubber having a specified average particle diameter. Compounding of globular particles in a spongy rubber has an effect to give a uniformized and decreased average cell diameter of the spongy rubber and also to greatly decrease the permanent compression set of the spongy rubber as required in the rubber layer of a spongy rubber roller. Cosmetic puffs can be imparted with improved touch feeling to the human skin and improved evenness in spreading of a cosmetic composition over the skin.Type: GrantFiled: July 31, 2000Date of Patent: September 17, 2002Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Takashi Kanai, Yasuyuki Sakyo
-
Publication number: 20020099108Abstract: A urethane-modified polyisocyanurate foam obtained by reacting (A) a polyisocyanate compound component, (B) a polyol component, containing a modified phenolic resin obtained by adding 20 to 100 parts by weight of a polyhydric alcohol or its alkylene oxide adduct to 100 parts by weight of a benzylic ether type phenolic resin and heating under a reduced pressure, in an amount of at least 3 wt % to the total resin component, (C) water and (D) a foam stabilizer comprising a mixture of at least 2 silicone type surfactants having different surface tensions wherein a surfactant having a higher surface tension has a surface tension of higher than 22 dyne/cm and a surfactant having a lower surface tension has a surface tension of at most 22 dyne/cm, in the presence of (E) a urethane-forming catalyst and/or a trimerization catalyst.Type: ApplicationFiled: November 27, 2001Publication date: July 25, 2002Applicant: Hodogaya Chemical Co., Ltd.Inventors: Tsuyoshi Sato, Tsutomu Nakamura
-
Publication number: 20020091170Abstract: There are disclosed an elastic member which comprises (A) polyurethane foam obtained by agitationally mixing a foaming agent, a foam stabiizer and a urethane prepolymer synthesized from a polyol and a polyisocyanate in the presence of a modified silicone, or (B) polyurethane foam obtained by agitationally mixing a polyol, a polyisocyanate, a modified silicone oil bearing a functional group reactive with a polyisocyanate, a foaming agent and a foam stabiizer comprising a polyether modified silicone containing 50 to 100% by weight of a polyoxyethylene unit in the polyether moiety; image formation equipment equipped with the above elastic member; and a toner supply roller which is composed of a foamed elastic member mounted on a developing apparatus and which has a compression spring constant in the range of 0.25 to 5.0 N/mm and a surface friction resistance in the range of 0.4 to 1.2 N.Type: ApplicationFiled: November 6, 2001Publication date: July 11, 2002Applicant: Bridgestone CorporationInventors: Junji Sakata, Hirotaka Yamazaki
-
Publication number: 20020058719Abstract: A silicone rubber sponge composition comprising an organopolysiloxane, finely divided silica, a blowing agent in the form of a non-cyano type organic azo compound, typically dimethyl 1,1′-azobis(1-cyclohexane carboxylate), and a curing agent is effectively blowable into a silicone rubber sponge which is safe without a need for long-term post-cure, contains uniform fine cells and has a smooth, tack-free skin layer.Type: ApplicationFiled: November 15, 2001Publication date: May 16, 2002Inventor: Atsushi Yaginuma
-
Patent number: 6300385Abstract: The present invention provides an organic porous material having equivalent thermal insulating properties to those of a porous material of a silica material and improved brittleness. The organic porous material of the present invention is an aggregate of organogel fine particles having a particle diameter of 10 to 300 nm, wherein inter-particle crosslinking is formed between adjoining organogel fine particles.Type: GrantFiled: October 20, 1999Date of Patent: October 9, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takashi Hashida, Masaaki Suzuki, Yukiyoshi Ono
-
Patent number: 6271273Abstract: Porous organo polysilica dielectric materials having low dielectric constants useful in electronic component manufacture are disclosed along with methods of preparing the porous organo polysilica dielectric materials. Also disclosed are methods of forming integrated circuits containing such porous organo polysilica dielectric materials.Type: GrantFiled: October 10, 2000Date of Patent: August 7, 2001Assignee: Shipley Company, L.L.C.Inventors: Yujian You, Angelo A. Lamola, Robert H. Gore, Michael K. Gallagher, Nikoi Annan
-
Patent number: 6221928Abstract: Polymer articles including maleic anhydride are described. The articles have improved characteristics and properties, such as surface bonding properties, even when the article includes a large percentage of ethylene propylene diene monomer terpolymer, ethylene-vinyl acetate, ethylene-acrylic elastomers, reclaim, or an oil.Type: GrantFiled: November 25, 1998Date of Patent: April 24, 2001Assignee: Sentinel Products Corp.Inventors: Matthew L. Kozma, John D. Bambara, Robert F. Hurley, Scott C. Smith
-
Patent number: 6117963Abstract: Block copolymers of the general average formula ##STR1## where, A=radical R.sup.1, radical D, or radical E,D=radical of the formula--R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n (CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2-i R.sup.6.sub.i --O--).sub.m R.sup.3,and E isa) a radical of the general formula --R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n R.sup.3 and/orb) an epoxy-functionalized alkyl substituent which may contain heteroatoms and/orc) a monohydroxylalkyl, dihydroxylalkyl, or trihydroxyalkyl substituent which may also be aromatic or branched and partially or fully etherfied or esterfied and/ord) a halogen- or pseudohalogen-substituted alkyl, aryl, or aralkyl radical which may also be branched,provided that there are two or more different polyether copolymer units in the block copolymer, the remaining variables being defined herein, are disclosed, as well as their use as surface-active substances, in particular as additives in the production of polyurethane foams.Type: GrantFiled: June 5, 1997Date of Patent: September 12, 2000Assignee: TH Goldschmidt AGInventors: Tammo Boinowitz, Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier
-
Patent number: 6074695Abstract: To provide a composition for the formation of insulating films that can form an insulating film having a low dielectric constant. The composition comprises (A) an electrically insulating curable resin selected from the group consisting of electrically insulating curable organic resins and electrically insulating curable inorganic resins; and (B) at least two solvents: (B)(i) a solvent capable of dissolving resin (A) and (B)(ii) a solvent whose boiling point or vapor pressure curve differs from that of solvent (B)(i) or whose affinity for resin (A) differs from that of solvent (B)(i). Also claimed is a method for forming a insulating films that have a dielectric constant of less than 2.7.Type: GrantFiled: March 31, 1998Date of Patent: June 13, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Akihiko Kobayashi, Katsutoshi Mine, Takashi Nakamura, Motoshi Sasaki, Kiyotaka Sawa
-
Patent number: 6031012Abstract: Provided is a curable composition comprising (A) a phenolic compound having a carbon-carbon double bond, (B) a compound having an SiH group, and (C) a foaming agent. The composition can be foamed and cured at room temperature or under heat at relatively low temperatures, and is poorly corrodable and poorly toxic.Type: GrantFiled: October 27, 1998Date of Patent: February 29, 2000Assignee: Kaneka CorporationInventors: Naoaki Nakanishi, Koji Himeno, Shintaro Komitsu
-
Patent number: 6005012Abstract: A method for treating a dried monolithic aerogel containing non-dispersed particles, with an organometallic surface modifying agent to produce hydrophobic aerogels. The dried, porous hydrophobic aerogels contain a protective layer of alkyl groups, such as methyl groups, on the modified surfaces of the pores of the aerogel. The alkyl groups at the aerogel surface typically contain at least one carbon-metal bond per group.Type: GrantFiled: October 29, 1998Date of Patent: December 21, 1999Assignee: The Regents of the University of CaliforniaInventors: Lawrence W. Hrubesh, John F. Poco, Paul R. Coronado
-
Patent number: 5786398Abstract: This invention relates to insulating foams and to a process for producing the foams. Preferably, the foams are made from phenol formaldehyde resins. The blowing agents for making the foams include film forming coating material which coats the interior surfaces of the foam cells. The coated foams have better thermal conductivity.Type: GrantFiled: March 24, 1995Date of Patent: July 28, 1998Assignee: Owens-Corning Fiberglas Technology Inc.Inventors: Byron J. Hulls, Vyacheslav Grinshpun
-
Patent number: 5773484Abstract: The use of enol ether capped polyether-polysiloxane copolymers as surfactants in polyurethane foam applications is taught herein. These enol ether capped surfactants exhibit a high capping efficiency and yield good performance. Moreover, they are stable in water/amine premixes.Type: GrantFiled: December 20, 1996Date of Patent: June 30, 1998Assignee: OSi Specialties, Inc.Inventor: Glenn A. Miller
-
Patent number: 5744507Abstract: A foamable, curable organosiloxane composition comprising an alkenyl-functional polyorganosiloxane, an organohydrogensiloxane, a blowing agent, a platinum catalyst and an adhesion promoter comprising an epoxy-functional compound, a hydroxyl-functional compound, a tetraalkylorthosilicate, an organotitanate and an aluminum or zirconium compound.Type: GrantFiled: May 1, 1997Date of Patent: April 28, 1998Assignee: Dow Corning CorporationInventors: Gloria Lynne Angell, Michael Andrew Lutz
-
Patent number: 5716541Abstract: Azeotropic compositions made up of from about 60 to about 78% by weight of 1,1,1,3,3-pentafluoropropane and from about 22 to about 40% by weight of tetramethylsilane have been found to be particularly useful as blowing agents for the production of polyurethane foams.Type: GrantFiled: September 23, 1996Date of Patent: February 10, 1998Assignee: Bayer CorporationInventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
-
Patent number: 5683527Abstract: A foamable, curable organosiloxane composition comprising an alkenyl-functional polyorganosiloxane, an organohydrogensiloxane, a blowing agent, a platinum catalyst and an adhesion promoter comprising an epoxy-functional compound, a hydroxyl-functional compound, a tetraalkylorthosilicate, an organotitanate and an aluminum or zirconium compound.Type: GrantFiled: December 30, 1996Date of Patent: November 4, 1997Assignee: Dow Corning CorporationInventors: Gloria Lynne Angell, Michael Andrew Lutz
-
Patent number: 5646194Abstract: A plastic foam material composed of a blended resin composition which includes at least two thermoplastic resins and a silane-modified based resin. The blended resin composition consists essentially of 100 parts by weight of at least two thermoplastic resins, from about 1 to about 50 parts by weight of a silane-modified, cross-linked, thermoplastic resin; from about 0.001 to about 2.5 parts by weight of a cross-linking catalyst for use in a silane compound and from about 1 to about 20 parts by weight of a foaming agent. According to one embodiment of the present invention, the thermoplastic resins include at least two substantially incompatible and substantially uncross-linked thermoplastic resins, while in another embodiment the two thermoplastic resins need not be substantially incompatible. The blended resin composition may further include reinforcers such as glass fibers and filler. The thermodecomposition foaming agent decomposes at sufficiently high temperatures to yield a plastic foam material.Type: GrantFiled: May 22, 1996Date of Patent: July 8, 1997Assignee: Sekisui Chemical Co., Ltd.Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Masanori Nakamura
-
Patent number: 5571847Abstract: Disclosed is a compatibilized carbon black useful in melt processing of plastic material. The carbon black is coated with a compatibilizing agent which enhances the dispersibility of the carbon black in a melt of the plastic material. Further disclosed are processes for making plastic foam structures with the compatibilized carbon black.Type: GrantFiled: June 9, 1995Date of Patent: November 5, 1996Assignee: The Dow Chemical CompanyInventors: Martin K. Hitchcock, Kyung W. Suh, Arnold M. Bartz, Andrew N. Paquet, William G. Stobby
-
Patent number: 5508321Abstract: An intumescent silicone rubber composition is provided having an expandable intumescent material present in the composition by up to 20% by weight, a polyorganosiloxane oil present in an amount from about 10% to about 40% by weight of the composition, a hydrated alkali metal silicate present in an amount of up to 80% by weight of the composition and a silicone elastomer binder present in an amount from about 4% to about 30% by weight of the composition. The result is a very effective and relatively inexpensive composition which when used as firestop material around combustible pipe, such as PVC or ABS, readily meets the test criteria set forth under ASTM Standard E-814.Type: GrantFiled: October 5, 1994Date of Patent: April 16, 1996Inventor: Keith I. Brebner
-
Patent number: 5438081Abstract: Silicone foams are prepared by microwave curing of a mixture of at least one polyorganosiloxane having vinyl groups attached to silicon; at least one hydride polysiloxane; a blowing agent comprising water and, preferably, at least one monohydroxyaliphatic compound, a cyclodextrin inclusion compound of a platinum group metal coordination complex (preferably with a cyclic diene) and a filler. The use of the inclusion compound as a catalyst increases the shelf life of the composition, whereupon curing and foaming occur together upon exposure to microwave radiation.Type: GrantFiled: October 20, 1994Date of Patent: August 1, 1995Assignee: General Electric CompanyInventors: Larry N. Lewis, William N. Schultz, Lionel M. Levinson, Chris A. Sumpter, Judith Stein
-
Patent number: 5397807Abstract: Disclosed is a compatibilized carbon black useful in melt processing of plastic material. The carbon black is coated with a compatibilizing agent which enhances the dispersibility of the carbon black in a melt of the plastic material. Further disclosed are processes for making plastic foam structures with the compatibilized carbon black.Type: GrantFiled: May 27, 1994Date of Patent: March 14, 1995Assignee: The Dow Chemical CompanyInventors: Martin K. Hitchcock, Kyung W. Suh, Arnold M. Bartz, Andrew N. Paquet, William G. Stobby
-
Patent number: 5162397Abstract: A foamable silicone composition comprises a polysiloxane having silicon-bonded hydrogen atoms, a polysiloxane having siloxane units including unsaturated groups, a polysiloxane having silicon-bonded hydroxyl groups, a noble metal catalyst and from 3 to 40 parts by weight per 100 parts by weight of the composition of entities of borosilicate or silicate glass or mixtures thereof. The composition comprises first and second Parts A and B having viscosities which are sufficiently similar to each other to permit facile machine mixing of the Parts; the first Part comprises the noble metal catalyst and a portion of the entities and the second Part comprises the polysiloxane having silicon-bonded hydrogen atoms and a portion of the entities pretreated with a compatible silane or a polysiloxane having silicon-bonded hydrogen atoms. Preferred entities comprise hollow spherical particles or hollow entities which have an irregular configuration.Type: GrantFiled: March 11, 1992Date of Patent: November 10, 1992Assignee: Dow Corning S.A.Inventors: Pierre Descamps, Andreas T. F. Wolf
-
Patent number: 5110835Abstract: An antistatic expandable styrene polymer in bead form, containinga) a styrene polymer,b) from 0.5 to 3% by weight, based on a), of a coating containingb1) from 10 to 70% by weight of finely divided silica;b2) from 20 to 80% by weight of a hydroxy-containing quaternary ammonium saltand, if desired, p1 b3) from 0.05 to 20% by weight of a conventional coupling agent and/orc) from 1 to 8% by weight, based on a), of a C.sub.3 to C.sub.6 hydrocarbon as blowing agent,and, if desired,d) conventional additives in effective amounts.Type: GrantFiled: August 5, 1991Date of Patent: May 5, 1992Assignee: BASF AktiengesellschaftInventors: Manfred Walter, Karl-Heinz Wassmer, Maria Lorenz
-
Patent number: 5096934Abstract: Packaging materials containing inherently antistatic foams and a method of using the foams are disclosed. The foam used is a polyether polyurethane foam prepared from an isocyanate containing prepolymer which is the reaction product of a oxyethylene containing polyol and a polyisocyanate. The foams show surface resistivity of less than 1.times.10.sup.12 ohms/square and static decay times of about two seconds or less. A preferred foam shows static decay times of 0.1 seconds or less. The packaging includes articles used around static sensitive devices or used to store or transport static sensitive devices.Type: GrantFiled: September 21, 1989Date of Patent: March 17, 1992Assignee: W. R. Grace & Co.-Conn.Inventors: William P. Roberts, Cynthia L. Ebner, Timothy G. Grasel
-
Patent number: 5039711Abstract: Stable flame-retardant polyol-oxidated silicon-acidic boron emulsions are produced by mixing and reacting a liquid organic polyol, and oxidated silicon compound and an acidic boron compound. This flame-retardant emulsion is useful in the production of flame-retardant polyurethane, polyester and polyesteramide products.Type: GrantFiled: September 25, 1989Date of Patent: August 13, 1991Inventor: David H. Blount
-
Patent number: 5023278Abstract: An improved process for producing sulfur-cured polyphosphazene foams is disclosed. The process comprises foaming more than one storable, stable accelerator base composition comprising the sulfur curing agent, a phosphazene oil and a polyphosphazene. A masterbatch of the same or similar polyphosphazene is made by mixing together a hydrated filler, processing aids and phosphazene oil. The matchbatch and accelerator base composition are then blended and foamed and cured.Type: GrantFiled: November 20, 1989Date of Patent: June 11, 1991Assignee: Ethyl CorporationInventors: Hugh A. Fisher, Susan D. Landry, Troy L. Smith, Jr.
-
Patent number: 4956393Abstract: Radomes having increased transparency and reduced reflectivity and refractivity to radar waves may be prepared or repaired utilizing heat-curable resin-containing structural materials in which the heat-curable resin contains greater than about 70 weight percent of cyanate functional monomers. The structural materials take the form of matrix resin impregnated prepegs and composites, film adhesives, paste adhesives, syntactic foams, and expandable foams, and may be used to prepare numerous useful structural features including honeycomb materials and leading edge radomes containing syntactic foams.Type: GrantFiled: August 29, 1988Date of Patent: September 11, 1990Assignee: BASF AktiengesellschaftInventors: Jack D. Boyd, Hermann Sitt, Hong-Son Ryang, Theodore F. Biermann
-
Patent number: 4943596Abstract: Silicone foams are provided which have increased tensile strength as the result of using an effective amount of a silicone polyimide block copolymer having chemically combined organovinylsiloxy units in the silicone block.Type: GrantFiled: November 21, 1988Date of Patent: July 24, 1990Assignee: General Electric CompanyInventors: David C. Gross, Connie L. Haig, Jonathan D. Rich
-
Patent number: 4940735Abstract: The present invention deals with a novel blowing agent masterbatch for the preparation of polystyrene foams, comprising:(a) 30 to 80 weight percent of a plasticizer-containing polystyrene having a Vicat softening temperature between 30.degree. and 50.degree. C.;(b) 20 to 70 weight percent of blowing agent based on solid organic acids and alkali metal (bi) carbonates; and optionally(c) 10 to 20 weight percent of cell regulators.Type: GrantFiled: March 23, 1989Date of Patent: July 10, 1990Assignee: BASF AktiengesellschaftInventor: Gerhard Kress
-
Patent number: 4883832Abstract: Fluid polymer/polyol dispersions are prepared from novel polyether polyols.Type: GrantFiled: June 24, 1987Date of Patent: November 28, 1989Assignee: BP Chemicals LimitedInventors: Rudolpha C. Cloetens, Werner A. Lidy, Huy P. Thanh
-
Patent number: 4867923Abstract: Process of producing a foamed product by forming a shaped article from a composition comprising a thermoplastic olefin polymer, a hydrolyzable, unsaturated silane, a gas generating compound and an organic peroxide in an amount of about 0.5 to about 2 percent by weight, and thereafter subjecting the shaped article to elevated temperatures to activate the gas generating compound and organic peroxide.Type: GrantFiled: December 21, 1984Date of Patent: September 19, 1989Assignee: Union Carbide CorporationInventors: Barry Topcik, Austin E. Barnabeo
-
Patent number: 4810728Abstract: Silicone foams are provided which have increased tensile strength as the result of using an effective amount of a silicone polyimide block copolymer having chemically combined organovinylsiloxy units in the silicone block.Type: GrantFiled: May 2, 1988Date of Patent: March 7, 1989Assignee: General Electric CompanyInventors: David C. Gross, Connie L. Haig, Jonathan D. Rich
-
Patent number: 4764363Abstract: Aqueous aerosol mousse compositions are disclosed which contain a water-dispersible silicone elastomer. The presence of the elastomer provides for clean wet hair feel along with good style retention.Type: GrantFiled: June 13, 1986Date of Patent: August 16, 1988Assignee: The Procter & Gamble CompanyInventor: Raymond E. Bolich, Jr.
-
Patent number: 4760098Abstract: Silicone flexible foams of good fire-resistance and extremely low density from about 5 to 14 lbs/ft..sup.3, having good mechanical and physical properties, are provided. The curable and foamable compositions are prepared from a multi-component mixture comprising, as part A, a high molecular weight uncured vinyl-terminated siloxane polymer, a polydimethyl silanol terminated reactive diluent, and an inorganic filler to improve fire resistance, water and a complex platinum catalyst, and as part B, a polydimethyl hydrogen siloxane. The viscosity of part A of the mixture prior to gelling and foaming is from about 30,000-65,000 cps. This mixture becomes foamable and curable at ambient temperature.Type: GrantFiled: July 10, 1986Date of Patent: July 26, 1988Inventor: Alexander Miutel
-
Patent number: 4714716Abstract: A substantially closed-celled linear polyolefin foam is made by melt processing under pressure a linear polyolefin together with a volatile blowing agent and a crosslinking agent and then expanding the polymer. Suitable crosslinking agents, including azido and vinyl functional silanes, organic peroxides, multifunctional vinyl monomers, and oxygen, increase the melt tension and melt viscosity of the polymer by lightly crosslinking the polymer with itself to enable the production of foams having improved properties in comparison with branched polyolefin foams.Type: GrantFiled: November 16, 1984Date of Patent: December 22, 1987Assignee: The Dow Chemical CompanyInventor: Chung P. Park
-
Patent number: 4705810Abstract: Novel blowing agents for foamable organopolysiloxane compositions, notably the platinum-catalyzed such organopolysiloxane compositions, comprise admixture of calcium carbonate and an organic carboxylic acid.Type: GrantFiled: January 20, 1987Date of Patent: November 10, 1987Assignee: Rhone-Poulenc ChimieInventors: Claude Millet, Paul Rostaing
-
Patent number: 4696849Abstract: This invention is a polyurethane composition useful for backing textiles comprising the catalyzed reaction product of a polyurethane-forming composition which comprises:(A) a first polyol which comprises a relatively high equivalent weight polyol containing an average of about 1.4-1.95 hydroxyl groups per molecule, of which hydroxyl groups at least 30% are primary hydroxyls or a mixture thereof with at least one additional relatively high equivalent weight polyol containing at least 2.05 hydroxyl groups per molecule, of which at least 30% are primary hydroxyls;(B) a relatively low equivalent weight compound having about 2 active hydrogen containing moieties per molecule;(C) a polyisocyanate and(D) a catalytic amount of a catalyst for the reaction of a polyol and a polyisocyanate,wherein the functionalities and proportions of components (A), (B), and (C) are such that such components have an average functionality of about 1.97-2.03, and the composition has an isocyanate index of about 85 to about 125.Type: GrantFiled: September 16, 1985Date of Patent: September 29, 1987Assignee: The Dow Chemical CompanyInventors: Larry W. Mobley, Don H. Kelley
-
Patent number: 4692381Abstract: Foamable and foamed polyvinlyidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and then extruded and quenched to provide the foamable polyvinylidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.Type: GrantFiled: March 9, 1987Date of Patent: September 8, 1987Assignee: Pennwalt CorporationInventor: Roger L. Pecsok
-
Patent number: 4675345Abstract: Foamable and foamed polyvinylidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and the extruded and quenched to provide the foamable polyvinylidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.Type: GrantFiled: July 15, 1986Date of Patent: June 23, 1987Assignee: Penwalt CorporationInventor: Roger L. Pecsok
-
Patent number: 4663360Abstract: A steam expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is mixed with a volatile blowing agent containing, as a primary blowing agent, dichlorodifluoromethane and as a secondary blowing agent, a halogenated hydrocarbon, a hydrocarbon, or an aliphatic alcohol containing from 1 to 4 carbon atoms, the secondary blowing agent having a normal atmospherpic boiling point of from about 0.degree. to about 100.degree. C. The composition may be expanded by steam immediately after extrusion foaming or may be expanded after aging of the composition which has been impregnated with volatile blowing agent.Type: GrantFiled: December 30, 1985Date of Patent: May 5, 1987Assignee: The Dow Chemical CompanyInventors: Chung P. Park, Gerald A. Garcia
-
Patent number: 4647618Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.Type: GrantFiled: February 18, 1986Date of Patent: March 3, 1987Assignee: Dow Corning CorporationInventors: Therese M. Bauman, Alan L. Freiberg
-
Patent number: 4638015Abstract: Disclosed are films made of expanded polypropylene, which have a uniform specific gravity d of from about 4.25.times.10.sup.-6 to about 6.50.times.10.sup.-6 Newton/mm.sup.3, a crystallization temperature of from about 115.degree. C. to about 135.degree. C. and an elastic modulus Me expressed in Newton/mm.sup.3 such that the ratio Me:d is from about 1.6.times.10.sup.8 to about 2.0.times.10.sup.8 mm.Type: GrantFiled: September 30, 1985Date of Patent: January 20, 1987Assignee: Montefina, S.A.Inventor: Jean-Noel M. Bertrand
-
Patent number: 4634733Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.Type: GrantFiled: May 28, 1986Date of Patent: January 6, 1987Assignee: Dow Corning CorporationInventors: Therese M. Bauman, Alan L. Freiberg
-
Patent number: 4631296Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.Type: GrantFiled: May 28, 1986Date of Patent: December 23, 1986Assignee: Dow Corning CorporationInventors: Therese M. Bauman, Alan L. Freiberg
-
Patent number: 4615850Abstract: Foamable and foamed polyvinlyidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and then extruded and quenched to provide the foamable polyvinlyidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.Type: GrantFiled: July 16, 1984Date of Patent: October 7, 1986Assignee: Pennwalt CorporationInventor: Roger L. Pecsok
-
Patent number: 4613543Abstract: An absorbent body for absorbing body fluids is provided which is highly liquid retentive and comprises cellular polymeric absorbent material. The absorbent body of the invention comprises a cellular interpenetrating polymeric network comprising a crosslinked polyelectrolyte.Type: GrantFiled: April 27, 1984Date of Patent: September 23, 1986Assignee: Personal Products CompanyInventor: Shmuel Dabi
-
Patent number: 4604321Abstract: An adsorbing agent and a method of preparation thereof is disclosed, which agent is capable of selectively adsorbing mercury from various mercury-containing gaseous or aqueous media at high rate of efficiency. The agent essentially comprises a porous material having a specific surface area in excess of 10 m.sup.2 /g. and a conjugated diolefin lower polymer deposited in a predetermined amount on the porous material.Type: GrantFiled: September 27, 1984Date of Patent: August 5, 1986Assignee: Nippon Petrochemicals Co., Ltd.Inventors: Mitsuo Okahara, Isao Ikeda
-
Patent number: RE37711Abstract: The use of enol ether capped polyether-polysiloxane copolymers as surfactants in polyurethane foam applications is taught herein. These enol ether capped surfactants exhibit a high capping efficiency and yield good performance. Moreover, they are stable in water/amine premixes.Type: GrantFiled: August 2, 1999Date of Patent: May 21, 2002Assignee: CK Witco Corp.Inventor: Glenn A. Miller