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:
Jan. 03, 1995
Filed:
Oct. 13, 1992
Applicant:
Inventor:
Murray R Orpin, Dyffryn, GB;
Assignee:
BP Chemicals Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528158 ; 525500 ; 528129 ; 528167 ; 523145 ; 523147 ;
Abstract
This invention relates to a hardener for producing phenolic resins from phenolic resoles which comprises a partial phosphate ester. The hardener is produced by reacting condensed phosphoric acids with polyols at controlled temperatures with vigorous agitation under vacuum until constant acidity is achieved. The hardeners cure the phenolic resoles relatively slowly and therefore enable better control to be achieved when preparing moulded products.