Patent ID: 6737475
Filing Date: 2004-05-18
Classification: C08G,C08L

Abstract:
A branched polyacetal resin composition, comprising:100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), wherein the branched copolymer (A) is the copolymerization reaction product of 100 parts by weight of trioxane (a-1), 0.001 to 10 parts by weight of a monfunctional glycidyl compound (a-2) selected from the group consisting of a glycidyl ether compound represented by the following formulae (II), (Ill) and (IV), and a glycidyl ester compound, each having a molecular weight of 100 to 1000, and 0.1 to 20 parts by weight of a cyclic ether compound (a-3) which is copolymerizable with trioxane selected from the group consisting of ethylene oxide, 1,3-dioxolan, diethylene glycol formal and 1,4-butanediol formal, and 0.5 to 40 parts by weight of at least one polymer (B) selected from the group consisting of the following polymers (B-1) and (B-2), polymer (B-1): a graft or block copolymer prepared from an olefin polymer (b-1)and at least one vinyl polymer (b-2); and polymer (B-2): a modified olefin polymer in which an olefin polymer (b-3) is modified with at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride and derivatives thereof, wherein formulae (I)-(IV) are as follows: â€ƒwherein m and n each is an integer of 0 to 5; the sum of m+n is 1 to 5; and R is a monovalent organic group having a molecular weight of 40 to 1000, â€ƒwherein R1 is a C1-12 alkyl group, a substituted alkyl group, an alkoxy group, an aryl group, a substituted aryl group or halogen; and n is an integer of 0 to 5 and, when n is 2 or more, the R1s may be the same or different: â€ƒwherein R2 is a C1-30 alkylene group, a substituted alkylene group or a polyalkylene oxide glycol residue; R3 is a C1-12 alkyl group, a substituted alkyl group, an alkoxy group, an aryl group, a substituted aryl group or halogen; and n is an integer of 0 to 5 and, when n is 2 or more, the R3s may be the same or different: â€ƒwherein R4 is a C1-30 alkylene group; n is an integer of 0 to 20; and R5 is a C1-30 alkyl group, a C2-20 alkenyl group or an alkynyl group.