Title:
POLYESTER RESIN MODIFYING AGENT, METHOD FOR PRODUCING SAME AND POLYESTER RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/090703
Kind Code:
A1
Abstract:
The present invention provides: a polyester resin modifying agent which contains a polycarbodiimide compound and is capable of improving the hydrolysis resistance of a polyester resin, and which is produced using only a small amount of a carbodiimidization catalyst and is suppressed in the degree of yellowing; a method for producing this polyester resin modifying agent; and a polyester resin composition which contains this modifying agent. A polyester resin modifying agent which contains a polycarbodiimide compound that is obtained by reacting an aliphatic diisocyanate, an isocyanate terminal blocking agent and a carbodiimidization catalyst, and which is configured such that: the content of the carbodiimidization catalyst is within a predetermined range; and the degree of yellowing (YI) thereof is less than 20. A method for producing this polyester resin modifying agent; and a polyester resin composition.
Inventors:
YANAGISAWA KENICHI (JP)
Application Number:
PCT/JP2019/042101
Publication Date:
May 07, 2020
Filing Date:
October 28, 2019
Export Citation:
Assignee:
NISSHINBO CHEMICAL INC (JP)
International Classes:
C08L67/00; C08G73/10
Foreign References:
| JP2000154226A | 2000-06-06 | |||
| JP4585749B2 | 2010-11-24 | |||
| JP2003313436A | 2003-11-06 | |||
| JPH09249801A | 1997-09-22 | |||
| JPH09296097A | 1997-11-18 | |||
| JPH06256288A | 1994-09-13 | |||
| JPH0881533A | 1996-03-26 |
Other References:
See also references of EP 3875538A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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