Thermoplastic resin composition excellent sliding properties

Details Thermoplastic resin composition excellent sliding properties Thermoplastic resin composition excellent sliding properties

2005-06-21

2005-06-21

Mullis, Jeffrey (Department: 1711)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S504000

Reexamination Certificate

active

06908959

ABSTRACT:
The present invention provides a resin composition having low mold contamination, excellent moldability and frictional wear properties, and further having good impact resistance.The thermoplastic resin composition is a copolymer comprising:[A] 100 parts by weight of a polyacetal resin or thermoplastic aromatic polyester resin,[B] 0.1 to 20 parts by weight of a graft polymer in which (B-2) a vinyl (co)polymer component comprising at least one vinyl compound is graft-polymerized on (B-1) an olefin polymer as a backbone polymer, and[C] 0.1 to 10 parts by weight of a liquid ethylene/α-olefin random copolymer comprising ethylene and an α-olefin having 3 to 20 carbon atoms, which random copolymer has (i) a proportion of a structural unit derived from ethylene of from 20 to 80 mol % and a proportion of a structural unit derived from α-olefin of from 20 to 80 mol % based on all structural units, (ii) a number average molecular weight (Mn) of from 500 to 10000, (iii) a molecular weight distribution (Mn/Mn) determined by a ratio of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of from 1.2 to 3, and (iv) a pour point of lower than 20° C.

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