Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1987-09-23
1989-05-02
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524262, 524424, 524425, 524433, 524436, 524437, 524604, C08K 554
Patent
active
048268992
ABSTRACT:
A low smoke generating, high char forming, substantially nondripping flame resistant thermoplastic multi-block copolyester wherein the weight ratio of high melting point blocks to low melting point blocks is from about 8:1 to 1:4, and said copolyester has a melting point below about 175.degree. C., said copolyester composition containing a bromine containing flame retardant; antimony trioxide; a drip suppressant for the multi-block copolyester, 25-65 parts per 100 parts multi-block copolyester of 50-88% alumina trihydrate and 12-50% of a magnesium compound selected from the group consisting of magnesium carbonate, magnesium oxide, and particulate magnesium hydroxide and, optionally, containing calcium carbonate and, preferably, containing a coupling agent having a hydrolyzable moiety containing titanium or silicon and an organophilic group.
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Modern Plastics Encyclopedia, 1984-85, pp. 121, 123-125.
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Rubber Chemistry & Tech., vol. 48, pp. 124-131 (1975).
E. I. Du Pont de Nemours and Company
Hoke Veronica P.
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