Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-03-28
1994-12-13
Short, Patricia A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525166, 525176, C08L 3700
Patent
active
053730550
ABSTRACT:
A thermoplastic elastomer composition which is excellent in balance of properties such as mechanical properties and thermal properties and in appearance is prepared by melt-kneading (A) 20-58 parts by weight of a saturated polyester resin and (B) 42-80 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading 100 parts by weight of the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups selected from an amino group, a carboxylic acid anhydride group, a hydroxyl group and a ##STR1## group wherein both X and Y are oxygen atoms or sulfur atoms, or either X or Y is an oxygen atom and another is a sulfur atom, or (D) 0.01-9 parts by weight of a polyfunctional compound having in one molecule at least two carboxyl groups or both at least one carboxyl group and at least one functional group selected from an amino group, a carboxylic acid anhydride group, a hydroxyl group and the ##STR2## group wherein X and Y are defined above.
REFERENCES:
patent: 4327199 (1982-04-01), Coran et al.
patent: 4956501 (1990-09-01), Sunseri
patent: 5008337 (1991-04-01), Patel
Mashita Kentaro
Nambu Jinsho
Ohmae Tadayuki
Toyoshima Yoshiki
Yamaguchi Noboru
Short Patricia A.
Sumitomo Chemical Company Limited
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