Toughened polyoxymethylene-poly(lactic acid) compositions

Details Toughened polyoxymethylene-poly(lactic acid) compositions Toughened polyoxymethylene-poly(lactic acid) compositions

2005-09-13

2005-09-13

Cheung, William K. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S165000, C264S452000, C264S453000

Reexamination Certificate

active

06943214

ABSTRACT:
Toughened polyoxymethylene-poly(lactic acid) resin compositions comprising polyoxymethylene, poly(lactic acid), and an impact modifier comprising an ethylene copolymer impact modifier made from monomers (a) ethylene; (b) one or more olefins of the formula CH2═C(R1)CO2R2, where R1is hydrogen or an alkyl group with 2-8 carbon atoms and R2is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2═C(R3)CO2R4, where R3is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4is glycidyl. The ethylene copolymer impact modifier may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.

REFERENCES:
patent: 3264272 (1966-08-01), Rees
patent: 4187358 (1980-02-01), Kyo et al.
patent: 4912167 (1990-03-01), Deyrup
patent: 1445282 (2004-11-01), None
patent: WO 00/23520 (2000-04-01), None
patent: WO 03/014224 (2003-02-01), None
patent: WO03/014424 (2003-02-01), None

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