Ethyl Corporation

Albemarle Corporation

Jeffrey T Books

Charles H Kolich

W Dirk Klobucar

Susan D Landry

Low density, heat stabilized, flame retardant styrenic polymer foam compositions, include a halogen-based flame retardant such as hexabromocyclododecane and zeolite A heat stabilizer.

Heat stabilized, flame retardant styrenic polymer foam compositions

Low density, heat stabilized, flame retardant styrenic polymer foam compositions include a halogen-based flame retardant such as hexabromocyclododecane and zeolite A heat stabilizer.

Heat stabilized flame retardant styrenic polymer foam compositions

A process for treating the surface of a cured phosphonitrilic fluoroelastomer of the formula ##STR1## where x is an integer of from about 3 to about 50,000, Q and Q' are the same or different and are fluoroalkoxy of the formula --OCH.sub.2 (CF.sub.2).sub.m CF.sub.2 Z where m is an integer from 0 to 20 and Z is hydrogen or fluorine and Q' is a group having some olefinic unsaturation with a solution of an alkali metal fluoroalkoxide of the formula MOC.sub.n.sup.f where M is an alkali metal and C.sub.n.sup.f is a fluorocarbon moiety of the formula --(CH.sub.2).sub.y (CF.sub.2).sub.n CF.sub.3 where y is 1 or 2 and n is an integer from 1 to 20. The process of this invention causes the replacement of some of the Q and Q' groups with --OC.sub.n.sup.f. The decreased number of Q and Q' where Z is hydrogen results in a cured phosphonitrilic fluoroelastomer surface displaying improved resistance to polar solvents.

Process for surface treating phosphonitrilic fluoroelastomers

Substantially linear organophosphazene polymers containing randomly distributed repeating units represented by the formulas: ##STR1## wherein R.sub.1 is a fluoroalkoxy group having the structure:

Alkenyl phenoxy polyfluoroalkoxyphosphazene

Improved injection moldability of polyethylene terephthalates is achieved by the addition of small amounts of (i) a poly-.alpha.-olefin and (ii) an adjuvant synergistically cooperative with the poly-.alpha.-olefin to achieve improved moldability and mold releasability even when the composition is injection molded at temperatures of at least as low as 93.degree. C.

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Baton Rouge, LA, United States of America

Jeffrey T Books