Joseph M Lesniewski

US Patent:

44017782, Aug 30, 1983

Filed:

Sep 17, 1981

Appl. No.:

6/303159

Inventors:

Henry J. Barda - North Brunswick NJ
Joseph M. Lesniewski - Hopewell NJ

Assignee:

Saytech, Inc. - Sayreville NJ

International Classification:

C08K 534

US Classification:

524 89

Abstract:

A flame retardant thermoplastic polymer containing a flame retardant amount of a flame retardant additive mixture. The mixture is comprised of halogenated imide-containing polyols having the formula: ##STR1## and the corresponding ethers having the formula: ##STR2## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6. The preferred flame retardant mixture is a derivative of tetrabromophthalic anhydride.

US Patent:

44304676, Feb 7, 1984

Filed:

Jan 7, 1982

Appl. No.:

6/337577

Inventors:

Joseph M. Lesniewski - Hopewell NJ
Michael J. Breza - Trenton NJ

Assignee:

Saytech, Inc. - Sayreville NJ

International Classification:

C08K 501
C08K 534

US Classification:

524 89

Abstract:

A flame retardant polymer composition comprising 2,3-dimethyl-2,3-diphenylbutane, a halogenated bisimide corresponding to the formula: ##STR1## wherein Q is methylene or oxygen, X is chlorine or bromine, R is hydrogen or an alkyl group containing 1-5 carbon atoms, R' is hydrogen or methyl and R" is an organic group containing 1-15 carbon atoms, and a polypropylene polymer selected from the group consisting of polypropylene and copolymers containing at least 50% by weight of co-polymerized propylene monomer.