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1. (WO2018198904) ANTI-COLORING AGENT FOR POLYURETHANE, METHOD FOR PRODUCING SAME, AND POLYURETHANE MOLDED BODY

Pub. No.:    WO/2018/198904    International Application No.:    PCT/JP2018/015994
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Apr 19 01:59:59 CEST 2018
IPC: C08L 75/12
C08G 18/32
C08L 75/04
D01F 6/70
Applicants: SANKO CO., LTD.
三光株式会社
Inventors: YOSHIZATO Akihiko
吉里 明彦
TANO Hiroyuki
田野 裕幸
Title: ANTI-COLORING AGENT FOR POLYURETHANE, METHOD FOR PRODUCING SAME, AND POLYURETHANE MOLDED BODY
Abstract:
This anti-coloring agent for polyurethane comprises a polymer composition having a structural unit represented by general formula (3), wherein the number average molecular weight (Mn) of the polymer composition is 10000-80000, and the molecular weight distribution (Mw/Mn) calculated from the number average molecular weight (Mn) and the weight average molecular weight (Mw) is 1.30-2.55. (3) -[(O-R1)i-N(R3)-(R2-O)j-CONHR4NHCO]- (in the formula, R1 and R2 are each independently a C2-5 alkylene group, R3 is a C1-10 alkyl group, R4 is a residue of an organic diisocyanate, i is an integer of 1-4, and j is an integer of 1-4).