Title:
PHENOLIC RESIN FOAM
Document Type and Number:
WIPO Patent Application WO/1999/011697
Kind Code:
A1
Abstract:
A phenolic resin foam which is obtained by using a hydrocarbon as a foaming agent having no fear of ozonosphere depletion and a low coefficient of global warming, has excellent heat-insulating performance, and is excellent in mechanical strengths such as compression strength and reduced in brittleness. This foam has a closed-cell content of 70 % or higher, an average cell diameter of 10 to 400 $g(m)m, and a density of 10 to 70 kg/m?3¿ and gives through pyrolytic gas chromatography a pyrolysis pattern in which the ratio C of the area A for all trimethylphenols as pyrolysis products to the area B for phenol as another pyrolysis product (C=A/B) is in the range defined by equation (1): 0.05 $m(F) C $m(F) 4.0.
Inventors:
ARITO YUUICHI (JP)
TAKASA KENZI (JP)
TAKASA KENZI (JP)
Application Number:
PCT/JP1998/003895
Publication Date:
March 11, 1999
Filing Date:
September 01, 1998
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
ARITO YUUICHI (JP)
TAKASA KENZI (JP)
ARITO YUUICHI (JP)
TAKASA KENZI (JP)
International Classes:
C08J9/14; (IPC1-7): C08J9/14
Foreign References:
| JPS61185535A | 1986-08-19 | |||
| JPH07196838A | 1995-08-01 |
Attorney, Agent or Firm:
Hagino, Taira (ARK Mori Building 12-32, Akasaka 1-chome Minato-ku Tokyo, JP)
Download PDF: