COPOLYACETAL

WIPO Patent Application WO/2000/005285

A1

A copolyacetal which is obtained by copolymerizing (A) 100 parts by weight of trioxane with (B) 0.01 to 10 parts by weight of at least one compound selected among glycidyl ether compounds represented by general formulae (I), (II), and (III) and (C) 0 to 20 parts by weight of a cyclic ether compound copolymerizable with trioxane (other than the compounds (B)). It is a polyacetal resin having high rigidity, excellent creep properties, a high surface hardness, and excellent sliding properties. In formula (I) (R?1¿ represents C¿1-12? alkyl, aryl, or substituted aryl). In formula (II) (R?2¿ represents a C¿2-20? poly(alkylene oxide) glycol residue). In formula (III) (R?4¿ represents C¿1-30? alkyl and R?5¿ represents C¿1-30? alkylene).

OKAWA HIDETOSHI (JP)
TAJIMA YOSHIHISA (JP)

PCT/JP1999/003966

February 03, 2000

July 23, 1999

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POLYPLASTICS CO (JP)
OKAWA HIDETOSHI (JP)
TAJIMA YOSHIHISA (JP)

C08G2/22; C08L59/00; (IPC1-7): C08G2/22

JPH04226917A	1992-08-17
JPH03170526A	1991-07-24
JPH03109411A	1991-05-09
JPH02214714A	1990-08-27
JPS6112713A	1986-01-21
JPS4326871B1	1968-11-19
JPH08231665A	1996-09-10
JPS4953286A	1974-05-23
JPS4714249A
JPS447139B1	1969-03-28
JPS4326873B1	1968-11-19
JPS4428509B1	1969-11-22

CHEMICAL ABSTRACTS, vol. 81, no. 18, November 1974, Columbus, Ohio, US; abstract no. 106175Y, MIKHAILOV M.: "Conformation and crystallinity of trioxane homo- and copolymers obtained by solid-liquid-state polymerization" page 14; column 2; XP002926624
See also references of EP 1120431A4

Furuya, Kaoru (Nihonbashi-Hamacho Chuo-ku Tokyo, JP)

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