Title:
PRODUCTION OF LOW-HARDNESS NONRIGID POLYURETHANE FOAM MOLDED PRODUCT
Document Type and Number:
Japanese Patent JPH03109412
Kind Code:
A
Abstract:
PURPOSE:To obtain the subject low-hardness molded product capable of providing automotive back cushions withstanding use for a long period without any sense of fatigue even in driving for a long period due to excellent mechanical properties by using a polyol composition of a specific composition. CONSTITUTION:The objective molded product, obtained by initially adding and mixing a polyisocyanate (preferably toluene diisocyanate, etc.) with a polyol composition composed of (A) 100 pts.wt. polyether polyol, (B) 3-8 pts.wt. water, (C) 0.2-3 pts.wt. silicone oil, (D) 0.02-2 pts.wt. urethanating catalyst and (E) 0.2-10 pts.wt. 1-19C monohydric alcohol (preferably octanol, etc.) so as to provide 0.8-1.1 equiv. ratio of NCO groups to hydroxyl groups, then injecting the resultant mixture in an amount of 25-40kg based on 1m<3> metallic mold volume into the metallic mold, expanding and curing the mixture and having 5-10kg/314cm<2> hardness.
Inventors:
MIZUNO TAKUMI
NAKAJIMA TOKI
OKADA OSAMU
HASHIMOTO NOBUHIDE
NAKAJIMA TOKI
OKADA OSAMU
HASHIMOTO NOBUHIDE
Application Number:
JP24774489A
Publication Date:
May 09, 1991
Filing Date:
September 22, 1989
Export Citation:
Assignee:
SUMITOMO BAYER URETHANE CO
International Classes:
B29C39/02; C08G18/08; C08G18/30; C08L75/00; B29K75/00; B29K105/04; C08G101/00; (IPC1-7): B29C39/02; B29K75/00; B29K105/04; C08G18/08; C08G18/30
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)