The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2002
Filed:
Dec. 28, 2000
Yuichi Arito, Saitama, JP;
Kenji Takasa, Kanagawa, JP;
Asahi Kasei Kabushiki Kaisha, , JP;
Abstract
A phenolic foam having a density of from 10 kg/m to 100 kg/m and comprising a phenolic resin base part and a cellular part most of which is made up of a large number of fine cells, wherein the fine cells contain a hydrocarbon and have an average cell diameter of 5 &mgr;m to 200 &mgr;m, and the cell walls of at least most of the fine cells are formed of a smooth surface of the phenolic resin base. While the blowing agent is a hydrocarbon, the foam has a thermal conductivity comparable to that of a conventional foam made with a flon blowing agent, undergoes no change in thermal conductivity with time, exhibits excellent mechanical strength such as compressive strength, and has reduced brittleness.