公开(公告)号：EP2623539A4

公开(公告)日：2016-06-01

申请号：EP11828554

申请日：2011-06-27

Applicant: TORAY INDUSTRIES

Inventor： NAGANO TATSUYA ,  TANAKA TSUYOSHI ,  OME HIROYUKI

IPC: C08G63/80 ,  C08G63/06

CPC classification number: C08G63/06 ,  C08G63/08 ,  C08G63/80

公开(公告)号：EP3150654A4

公开(公告)日：2018-02-21

申请号：EP15800376

申请日：2015-05-28

Applicant: TORAY INDUSTRIES

Inventor： OKUBO TAKURO ,  TANAKA TSUYOSHI ,  KATO KOYA

IPC: C08G69/40 ,  C08L77/00

CPC classification number: C08G69/40 ,  B29C45/0001 ,  B29K2077/00 ,  B29K2995/0037

Abstract: The present invention addresses the problem of providing a high molecular weight, terminal modified polyamide resin having a low melt viscosity and excellent molding processability. The problem is solved by a terminal modified polyamide resin having a relative viscosity (·r), as measured at 25°C in a 98% sulfuric acid solution at a resin concentration of 0.01 g/ml, of 2.1 to 10, the resin comprising 0.05 to 4.5% by mass of a terminal structure represented by general formula (I): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-X-(R 1 -O) n -R 2 €ƒ€ƒ€ƒ€ƒ€ƒ(I) wherein n ranges from 2 to 100; R 1 represents a hydrocarbon group of 2 to 10 carbon atoms; R 2 represents a hydrocarbon group of 1 to 30 carbon atoms; -X- represents - NH- or -N(CH 3 )-; and n R 1 s in the general formula (I) may be the same or different.

公开(公告)号：EP2738196A4

公开(公告)日：2015-08-12

申请号：EP12817021

申请日：2012-07-18

Applicant: TORAY INDUSTRIES

Inventor： TANAKA TSUYOSHI ,  KUMAZAWA SADANORI ,  OME HIROYUKI

IPC: C08G63/06 ,  C08L101/16

CPC classification number: C08G63/06 ,  C08G63/80

Abstract: The present invention is directed to a method for producing a polylactic acid resin, including the step of subjecting a crystallizedprepolymer, which is a prepolymer including a lactic acid unit as a main component, and has an optical purity (Ea) of 60 to 94%, a weight average molecular weight of 5,000 to 100,000, and a crystal melting enthalpy (”Hma) of 4 to 50 J/g, to solid phase polymerization. According to the present invention, it is possible to obtain a polylactic acid resin which is excellent in moldability upon melt processing and drawdown resistance upon melt processing, and is also excellent in hydrolysis resistance.