Patent ID: 7087679
Filing Date: 2006-08-08
Classification: C08G,C08L

Abstract:
1. A method for mixing a heat resistive thermoplastic resin (b), which has a crystalline melting point or glass transition temperature of not less than 150° C., a fluorine-containing polymer (a) having a functional group and a number-average molecular weight of 2,000 to 1,000,000 and a fluorine-containing polymer other than the fluorine-containing polymer (a) and having no functional group by blending the thermoplastic resin (b), the fluorine-containing polymer (a) having the functional group and the fluorine-containing polymer other than the fluorine-containing polymer (a) at least at a temperature not less than a crystalline melting point or glass transition temperature of the thermoplastic resin (b); said fluorine-containing polymer (a) having the functional group is at least one selected from fluorine-containing polymers having functional groups, in which a concentration of the functional group at a main chain end portion and side chain portion is 2 to 2000 μmol/g per the total weight of the fluorine-containing polymer, and represented by the formula (1): wherein X is a structural unit of the formula —(CH 2 CX 1 X 2 )— (wherein X 1 and X 2 are the same or different, and each is hydrogen atom, fluorine atom, —(CH 2 ) p —(O) q —R—B 1 (R is a dihydric hydrocarbon group having carbon atoms of 1 to 20 or dihydric fluorine-substituted organic group having carbon atoms of 1 to 20, B 1 is hydrogen atom, fluorine atom, hydroxy group or epoxy group, p is 0 or 1 and q is 0 or 1), —OCO—R—B 1 (R and B 1 are the same as above) or —COO—R—B 1 (R and B 1 are the same as above)); Y is a structural unit of the formula —(CF both A provided that each of X and Y may comprise two or more structural units; Y may not be present when X has the structural unit derived from CH X may not be present when Y has the structural unit derived from CH at least one of A