Halogen containing fire retardant and fire retarded resin compos

Details Halogen containing fire retardant and fire retarded resin compos Halogen containing fire retardant and fire retarded resin compos

1997-09-29

1999-10-12

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

252609, C08K 515

Patent

active

059656441

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##

REFERENCES:
patent: 4504608 (1985-03-01), Kishida et al.
patent: 5250590 (1993-10-01), Nakai et al.
patent: 5350802 (1994-09-01), Muskopf et al.
patent: 5376718 (1994-12-01), Yada
patent: 5395874 (1995-03-01), Mishima et al.
patent: 5837799 (1998-11-01), Chen et al.

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