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:
Apr. 11, 1989
Filed:
Feb. 18, 1988
Applicant:
Inventor:
Harold E Duryea, Saco, ME (US);
Assignee:
Fiber Materials, Inc., Biddeford, ME (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C08G / ; C08K / ; C08K / ;
U.S. Cl.
CPC ...
428246 ; 428247 ; 428255 ; 428269 ; 428283 ; 428921 ; 521 85 ; 521103 ; 521136 ; 521181 ; 521907 ; 523219 ; 524876 ; 528138 ; 528155 ; 528156 ;
Abstract
A flame-retardant polymer is created by forming a first resin typically by reacting resorcinol with furfural in a ratio of one mole of the former to less than a mole of the latter in the presence of an alkaline catalyst. A resole is then formed by reacting typically phenol with formaldehyde in a ratio of one mole of phenol to more than a mole of the aldehyde in the presence of an alkaline catalyst. The first resin and resole are mixed together with a powered oxyborate compound such as zinc borate and allowed to polymerize to form the polymer.