Rubbery Property Patents (Class 526/938)
-
Patent number: 8188192Abstract: Elastomeric films which are both soft and thermally, UV and oxidatively stable are provided. The films are composed of coupled, selectively hydrogenated block copolymers having a relatively high molecular weight and high vinyl content. In addition to the block copolymer other components may be present in formulated films such as other block copolymers, hydrocarbon resins, polyolefins, metallocene polyolefins, homopolystyrene or mineral oils. The softness of the films is determined by the stress at 100% tensile elongation where the films with suitable softness have a 100% stress of about 100 psi or less. While soft, the films also are strong with tensile strengths of 1000 psi or more and suitable hysteresis properties. The elastomeric films are useful as integral components of personal hygiene articles such as gloves, diapers, incontinence products, disposable swimwear and disposable undergarments.Type: GrantFiled: December 19, 2008Date of Patent: May 29, 2012Assignee: Kraton Polymers U.S. LLCInventors: Dale Lee Handlin, Jr., Phillip Doerpinghaus, Sandra Horton, legal representative, Keith Eiden, Margaret Clawson
-
Patent number: 7001956Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.Type: GrantFiled: June 4, 2003Date of Patent: February 21, 2006Assignee: Kraton Polymers U.S. LLCInventors: Dale Lee Handlin, Jr., Carl Lesley Willis, Hendrik de Groot, Margaret Ann Burns Clawson, Gert Joly, Catherine Maris, Lie Djiauw
-
Patent number: 6750293Abstract: Disclosed are a precursor composition, a rubber component and a shear ply prepared from the precursor composition, and methods for making and using the same. The precursor composition includes a first hydrogenated nitrile conjugated-diene copolymer modified by a metal salt unsaturated carboxylic acid ester, wherein the first hydrogenated nitrile conjugated-diene copolymer is derived from a first ethylenically unsaturated nitrile and a first conjugated diene a second hydrogenated nitrile conjugated-diene copolymer derived from a second ethylenically unsaturated nitrile and a second conjugated diene; and a curing agent.Type: GrantFiled: March 27, 2002Date of Patent: June 15, 2004Assignee: Alliant Techsystems, Inc.Inventors: Albert R. Harvey, John W. Ellertson
-
Patent number: 5807946Abstract: Motor vehicle brake parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the brake parts based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have improved resistance to elevated temperature properties, and good heat aging characteristics, compared to for instance ethylene, alpha-olefin, non-conjugated diene elastomers (where the diene is other than vinyl norbornene) or styrene butadiene rubbers.Type: GrantFiled: June 14, 1995Date of Patent: September 15, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Eric Paul Jourdain, Periagaram S. Ravishankar
-
Patent number: 5698650Abstract: Motor vehicle brake parts and power transmission belt based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the brake parts and the power transmission belt based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have improved resistance to elevated temperature properties, and good heat aging characteristics, compared to for instance ethylene, alpha-olefin, non-conjugated diene elastomers (where the diene is other than vinyl norbornene) polychloroprene, or styrene butadiene rubbers.Type: GrantFiled: September 20, 1996Date of Patent: December 16, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Eric Paul Jourdain, Periagaram Srinivasan Ravishankar
-
Patent number: 5571883Abstract: Motor vehicle vibration damping parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to vibration damping part compounds having lower viscosity, easier processing than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the engine mounts or other vibration damping parts based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have better heat aging characteristics than natural rubber, when temperature of service exceed 120.degree. C., maintain more constant dynamic characteristics of the mount when running at elevated temperature like 120.degree. C.Type: GrantFiled: June 14, 1995Date of Patent: November 5, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Eric P. Jourdain, Periagaram S. Ravishankar
-
Patent number: 5134209Abstract: Ethylene-propylene rubbery copolymers having a high degree of random polymerization are produced by employing a high activity, stereoregular polymerization catalyst comprising a titanium halide-containing procatalyst, an organoaluminum compound cocatalyst and a moderately hindered aromatic nitrogen heterocycle as selectivity control agent. The ethylene-propylene copolymer has good properties and exhibits improved processability.Type: GrantFiled: December 26, 1990Date of Patent: July 28, 1992Assignee: Shell Oil CompanyInventors: Robert C. Job, Larry L. Sterna