Title:
MELT VISCOSITY DEPRESSANT FOR POLYESTER RESIN AND POLYESTER FIBER
Document Type and Number:
Japanese Patent JPH05255533
Kind Code:
A
Abstract:
PURPOSE:To decrease the viscosity of a polyester resin melt without lowering the degree of polymerization by adding a specific melt viscosity depressant to the resin. CONSTITUTION:100 pts.wt. polyester resin which has an ethylene terephthalate unit as the main repeating unit and a unit formed by partly replacing the terephthalic acid with a sulfonate represented by formula I (wherein D is a trivalent aromatic or aliphatic hydrocarbon group; X1 is an ester-forming functional group; X2 is the same as X1 or H; M is an alkali (or alkaline earth) metal or an onium; and q is 1 or 2) is mixed with 0.1-10 pts.wt. melt viscosity depressant comprising a compound represented by formula II or III (wherein A is a branched acyl represented by formula IV, where R1 to R3 each is an alkyl or H, provided that at least two of them are alkyls; R is a 1-4C alkylene or styrene; p is 1 or 2; m and n are each such an integer that m+n is 2-4 on the average; X is an aromatic group; and Y is an aromatic alcohol residue or a phenol residue).
Inventors:
Akito Ihi
Nishi Isao
Yasuo Ishii
Nishi Isao
Yasuo Ishii
Application Number:
JP5279492A
Publication Date:
October 05, 1993
Filing Date:
March 11, 1992
Export Citation:
Assignee:
Kao Corporation
International Classes:
C08K5/10; C08L67/00; C09K3/00; D01F1/10; D01F6/92; (IPC1-7): C08K5/10; C08L67/00; C09K3/00; D01F1/10; D01F6/92
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)
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