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US 4,400,483 AGranted
Thermoplastic elastomer compositions for low pressure molding
AssigneePhillips Petroleum Company
InventorsRoy W. Siedenstrang, William H. Cornell
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AssigneePhillips Petroleum Company
InventorsRoy W. Siedenstrang, William H. Cornell
Estimating the term…
Compositions comprising a thermoplastic elastomer, e.g., radial block butadiene/styrene copolymer, solid resinous polymer, e.g., vinyl-substituted aromatics, and one or more specific polar compounds. The specific polar compounds are chosen from among simple and polymeric alkaline glycols, their mono and dialkyl ethers; ethanolamines, isopropanolamines, and their hydrocarbylsubstituted derivatives; liquid acrylonitrile/butadiene polymers; acrylonitrile/butadiene blends with homopolymers of polyvinyl chloride and styrene/acrylonitrile copolymers; and mixtures thereof. A method using these compositions for producing molded objects at a molding pressure of up to about 200 psig. Molded objects produced from these compositions and molded objects produced by this method of molding.
A molding composition suitable for being molded at a pressure of 200 psig or less said composition comprising (1) a thermoplastic elastomer that is a normal solid, linear or radial teleblock copolymer comprising about 30 to about 100 weight percent of the total polymeric component of the composition, (2) solid resinous polymer that is a polymer of a vinyl-substituted aromatic compound comprising about 0 to about 70 weight percent of the total polymeric component composition, and (3) an amount of a polarizing agent sufficient to allow heating the molding composition to a moldable consistency by exposure to energy at microwave frequency, said polarizing agent selected from among mixtures of at least one compound chosen from among (1) simple and polymeric alkylene glycols, their mono and dialkyl ethers with at least one compound chosen from among (2) ethanolamines, isopropanolamines, and their hydrocarbylsubstituted derivatives.
Dependencies are inferred from the claim text.