Patent ID: 11911341
Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC A  B  C | IPC A  B  C

Claim 23:
24. The method for manufacturing a multilayer vessel of claim 23, the method comprising:
molding a multilayer preform by individually injecting the layer (X) that contains a cycloolefin-based polymer (B) as a major ingredient, and the layer (Y) that contains the polyamide resin (A) as a major ingredient, to thereby form a multilayer preform; and,
molding the multilayer preform by blow molding, wherein
the polyamide resin (A) is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid,
70 mol % or more of the structural unit derived from diamine is derived from metaxylylenediamine, and
30 to 60 mol % of the structural unit derived from dicarboxylic acid is derived from a straight chain aliphatic α,ω-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % is derived from isophthalic acid.