| Patent Number |
Title Of Patent |
Date Issued |
| 6579944 |
Thermoplastic vulcanizate with defined morphology for optimum elastic recovery |
June 17, 2003 |
| A thermoplastic vulcanizate (TPV) is produced by melt blending until the volume fraction of dispersed rubber particles is greater than 0.5 preferably from 0.55 to 0.95, the remaining being the dispersed continuous plastic phase in a manner so as to develop a morphology which generates |
| 6476132 |
Use of a silane grafted polyolefin in EPDM/polyolefin thermoplastic vulcanizates to improve comp |
November 5, 2002 |
| A thermoplastic vulcanizate (TPV) from a blend of a first thermoplastic polyolefin, a second thermoplastic olefin and a rubber is described. The rubber is crosslinked with a hydrosilylation crosslinking agent. The second polyolefin includes at least one OR group pendant to a Si atom |
| 6437030 |
Thermoplastic vulcanizates and process for making the same |
August 20, 2002 |
| A process for forming a thermoplastic vulcanizate compromising the steps of dynamically vulcanizing a rubber within a blend that comprises the rubber and a thermoplastic polymer, where said step of vulcanizing is carried out by using a phenolic resin in the presence of a catalyst system |
| 6399710 |
Modification of thermolastic vulcanizates with a thermoplastic random copolymer of ethylene |
June 4, 2002 |
| Random thermoplastic ethylene copolymers can be used to increase the elongation to break and toughness of thermoplastic vulcanizates. Polypropylene is a preferred thermoplastic phase. The rubber can be olefinic rubbers. Random thermoplastic ethylene copolymers are different from Zieg |
| 6388016 |
Dynamic vulcanization of polymer blends from series reactors |
May 14, 2002 |
| A method for the dynamic vulcanization of polymer blends made by solution polymerization in series reactors. The polymer blends are mixed under conditions of heat and shear, and a curing agent is added to at least partially cross-link one of the blend components. |
| 6329463 |
High temperature, oil resistant thermoplastic vulcanizates made from polar plastics and acrylate |
December 11, 2001 |
| A polar thermoplastic and acrylate or ethylene acrylate based polar rubbers form a useful thermoplastic vulcanizate when the rubber is selectively cured with curatives which do not affect the polar thermoplastic and do not generate volatile organics. Examples of thermoplastics include |
| 6288171 |
Modification of thermoplastic vulcanizates using random propylene copolymers |
September 11, 2001 |
| Random propylene thermoplastic copolymers can be used to increase the elongation to break and toughness of thermoplastic vulcanizates. Semi-crystalline polypropylene is a preferred thermoplastic phase. The rubber can be olefinic rubbers. Random thermoplastic polypropylene copolymers |
| 6251998 |
Hydrosilylation crosslinking of thermoplastic elastomer |
June 26, 2001 |
| In the preparation of thermoplastic elastomers by hydrosilylation crosslinking of the elastomeric component, the use of an elastomer containing a non-conjugated diene and having a Mooney viscosity within the MST range of 45 to 100 provides products with a high level of crosslinking a |
| 6207752 |
Thermoplastic vulcanizates of carboxylated nitrile rubber and thermoplastic polyurethanes |
March 27, 2001 |
| Low oil swell, non sticky readily processable carboxylated nitrile rubber-thermoplastic polyurethane vulcanizate compositions have increased upper service temperature over comparable thermoplastic polyurethanes. The compositions of the present invention are made utilizing a processing ai |
| 6174962 |
Free radically cured thermoplastic vulcanizates of a polyolefin and a acrylate modified paraalky |
January 16, 2001 |
| A thermoplastic vulcanizate composition containing a thermoplastic and a functionalized copolymer of para-alkylstyrene-isoolefin is free radically cured, as for example, with a peroxide to yield a product having low impurities and good clarity. The thermoplastic typically can be a po |
| 6140424 |
Multiple component thermoplastic elastomer compositions |
October 31, 2000 |
| Thermoplastic elastomer compositions which have good high temperature end use and good oil swell resistance are made by blending a high melting thermoplastic polymer containing a non-polar rubber and a polar rubber. Alternatively, a high melting thermoplastic polymer containing a non-pol |
| 6121383 |
Thermosplastic vulcanizates from blends of a polypropylene and elastic .alpha.-olefin/cyclic ole |
September 19, 2000 |
| Thermoplastic vulcanizate blends are prepared from a semi-crystalline polymer and a rubbery copolymer derived from copolymerizing at least one alpha-olefin monomer and at least one cyclic olefin copolymer. The rubbery copolymer also includes repeat units from at least one polyene monomer |
| 6100334 |
Thermoplastic vulcanizates from a cyclic olefin rubber, a polyolefin, and a compatiblizer |
August 8, 2000 |
| A blend of a semicrystalline polyolefin, a rubbery polymer containing repeat units from norbornene, and a polymeric compatibilizer is disclosed. This composition has reduced oil swell as compared to thermoplastic vulcanizates from a semicrystalline polyolefin and hydrocarbon rubbers. |
| 6020427 |
Thermoplastic vulcanizates of carboxylated nitrile rubber and polyester thermoplastics |
February 1, 2000 |
| Low oil swell, processable carboxylated nitrile rubber thermoplastic vulcanizate compositions having high melting points are made utilizing a processing aid, for example, maleated polyethylene, and addition type curing agents such as bisoxazolines or bisimidazolines. The compositions |
| 5910543 |
Thermoplastic elastomer with polar and non-polar rubber components |
June 8, 1999 |
| Thermoplastic elastomer compositions which have good high temperature end use and good oil swell resistance are made by blending a high melting thermoplastic polymer containing a non-polar rubber and a polar rubber. Alternatively, a high melting thermoplastic polymer containing a non-pol |
| 5777033 |
Co-cured rubber-thermoplastic elastomer compositions |
July 7, 1998 |
| A thermoplastic elastomer composition has a plastic phase or matrix of an engineering thermoplastic such as a polyamide and a crosslinked phase of cured acrylic rubbers. The rubbers contain at least two functionalized acrylic rubbers wherein the functional group such as a carboxyl, an ep |
| 5777029 |
Co-cured rubber-thermoplastic elastomer compositions |
July 7, 1998 |
| A thermoplastic elastomer composition has a plastic phase or matrix of an engineering thermoplastic such as an ester polymer and a crosslinked phase of cured acrylic rubbers. The rubbers are cured by a curing agent and contain at least two functionalized acrylic rubbers wherein the funct |
| 5621045 |
Thermoplastic vulcanizates from isobutylene rubber and either EPDM or a conjugated diene rubber |
April 15, 1997 |
| Thermoplastic vulcanizates from semicrystalline polyolefins and blends of crosslinked rubbers are disclosed. The blends are a mixture of at least two rubbers. One rubber is a copolymer predominantly of C.sub.4 to C.sub.7 isomonoolefins (e.g. isobutylene), along with optional monomers of |
| 4808665 |
Crosslinked blends |
February 28, 1989 |
| Shaped articles are made from blends of rubber and plastic in which the rubber is in the form of discrete vulcanized particles dispersed in the plastic. After shaping the articles, they are exposed to free-radical crosslinking which converts the blends from thermoplastics to thermosets. |
| 4594390 |
Process for the preparation of thermoplastic elastomers |
June 10, 1986 |
| A process is described for the preparation of thermoplastic elastomers comprising a blend of plastic and cured rubber by dynamic vulcanization wherein the blend is subjected to high shear. |
| 4311628 |
Thermoplastic elastomeric blends of olefin rubber and polyolefin resin |
January 19, 1982 |
| Thermoplastic elastomeric compositions, comprising blends of olefin rubber and polyolefin resin in which the rubber is cured with phenolic curative, exhibit superior properties including improved compression set and oil resistance. |
| 4104329 |
Acrylate-modified ethylene-vinyl acetate polymer |
August 1, 1978 |
| Ethylene-vinyl acetate polymer is modified by reaction with a polyfunctional acrylate which improves the processing characteristics of the polymer. The cured modified polymers exhibit improved properties including lower hardness and greater dimensional stability. |
