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:
Oct. 12, 1999
Filed:
Sep. 29, 1997
Applicant:
Inventors:
Assignee:
Thoto Kasei Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524109 ; 252609 ;
Abstract
A halogen containing fire retardant represented by chemical formula (1) wherein the end groups X and Y are composed by A or B represented by chemical formula (2); and the said fire retardant is a mixture of the composition containing 1 to 40% of X=Y=A, 30 to 70% of X=A and Y=B, smaller than 70% of X=Y=B and, degree of polymerization n is n.gtoreq.0 wherein the content of n=0 is smaller than 60% to the total amount. ##STR1## wherein A and B are represented by following chemical formulae, and R of chemical formula B is an alkyl group of carbon number 1 to 8 alone, or 1 to 79% of alkyl group of carbon number 1 to 8 and 79 to 1% of tribromophenyl group, and total amount of R is smaller than 80%. ##STR2##