Polyoxymethylene homopolymers and copolymers, and production...

Details Polyoxymethylene homopolymers and copolymers, and production... Polyoxymethylene homopolymers and copolymers, and production...

2004-09-03

2010-06-29

Truong, Duc (Department: 1796)

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

Synthetic resins

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

C528S425000, C528S370000, C528S371000, C428S412000

Reexamination Certificate

active

07745548

ABSTRACT:
Homo- or copolyoxymethylenes are described and contain the repeat structural unit of formula Iin-line-formulae description="In-line Formulae" end="lead"?-A-O—R1—O—CO—(R2—CO—)m—O—  (I),in-line-formulae description="In-line Formulae" end="tail"?where A is a radical derived from a homo- or copolyoxymethylene,R1is an alkylene radical having at least two carbon atoms, or a cycloalkylene radical,R2is a direct carbon-carbon bond, or an alkylene, cycloalkylene, arylene, or aralkylene radical, andm is 0 or 1.These polymers may be prepared by reacting end-group-functionalized homo- or copolyoxymethylenes with selected chain-linking agents.The reaction products can be used to produce moldings.

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