Flame retardant polyester resin compositions

Details Flame retardant polyester resin compositions Flame retardant polyester resin compositions

1984-01-05

1985-12-31

Bleutge, John C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523427, 523435, 523444, 523460, 524373, 524375, 524605, 525438, C08L 6702

Patent

active

045622167

ABSTRACT:
Flame retardant reinforced with thermoplastic polyester resin compositions are disclosed glass fiber and a system of flame retardants represented by the following general formulas (I) and (II), together with antimony trioxide. The flame retardant system is a blend of 1-20 parts by weight of component (I), and 2-40 parts by weight of component (II), provided the weight ratio (I)/(II) of the flame retardant components (I) to (II) is in the range of 0<(I)/(II).ltoreq.5, and that the total amount of flame retardants (I) plus (II) is in the range of 3-40 parts by weight. From 2 to 3 parts by weight of antimony trioxide is present and 5 to 60% by weight of glass fiber is also present, these two percentages being expressed on the basis of the weight of the total resin composition. The resin compositions exhibit outstanding mechanical, thermal, forming and machining properties in addition to being fire retardant. ##STR1## in which X is hydrogen, chlorine or bromine, the average value for l and m are independently 0 to 11 and the halogen content is 10% or more by weight. Values for R.sub.1 and R.sub.2 are given in the attached specification.

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