Title:
【発明の名称】連続気泡硬質ポリウレタンフォームを製造するためのポリオールブレンド
Document Type and Number:
Japanese Patent JP2002515527
Kind Code:
A
Abstract:
Polyol blend comprising: (a) a polyol component having an average hydroxyl value of 150 to 850 mg KOH/g and (b) a polymer polyol comprising a polymer stably dispersed in a base polyol medium, which base polyol medium has an average primary hydroxyl content of less than 20 %. This polyol blend is suitably applied in a process for the preparation of open cell rigid polyurethane foams, wherein it is reacted with a polyisocyanate component in the presence of at least a catalyst, a foam stabilising agent and a blowing agent. The resulting open cell rigid polyurethane foam has a density of less than 50 kg/m<3> and a closed cell content of less than 10 %, preferably of less than 5 % and can suitably be applied as heat insulating material.
Inventors:
Galena, Claudio
Application Number:
JP2000549662A
Publication Date:
May 28, 2002
Filing Date:
May 18, 1999
Export Citation:
Assignee:
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BESLOTEN VENNOOTSHAP
International Classes:
C08L71/02; C08G18/40; C08G18/48; C08G18/50; C08G18/63; (IPC1-7): C08G18/48; C08L71/02
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)