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:
Jul. 05, 1977
Filed:
Sep. 26, 1975
Anthony Joseph Papa, Saint Albans, WV (US);
Union Carbide Corporation, New York, NY (US);
Abstract
This invention relates to the use of methyl formate as an adjuvant in the formation of phenolic foam. The addition of methyl formate to phenol-aldehyde resoles causes a substantial reduction in resole viscosity and thus allows for the processing of resoles which are otherwise too viscous to be foamed. A further advantage of methyl formate as an adjuvant in the formation of phenolic foam is that it also functions as a blowing agent. In its use as a blowing agent, methyl formate is employed in combination with 1,1,2-trichloro-1,2,2-trifluoroethane. Depending upon the nature of the phenolic foaming resin, the use of methyl formate in combination with 1,1,2-trichloro-1,2,2-trifluoroethane as the source of blowing action further provides the advantageous result of allowing for the formation of phenolic foam of reduced friability.