Stauffer Chemical Company

Siegfried Altscher

Paul Kraft

Jagadish C Goswami

Arthur J Yu

Ki Soo Kim

Ki-Soo Kim

Improved copoly(carbonate/phosphonate) compositions formed by reaction of a dihydric phenol, a carbonate precursor, and an organophosphorus dihalide are disclosed. The inherent viscosity and melting point of such compositions is increased by the presence of an effective amount of a chain branching agent, optionally in the additional presence of a chain terminating agent.

Copoly (carbonate/phosphonate) compositions

Polyester compositions containing an effective amount for flame retardancy of a copolymer of (1) benzene phosphorus oxydichloride, (2) 2,4'-thiodiphenol, 4,4'-thiodiphenol, 2,4'-sulfonyl diphenol, 4,4'-sulfonyl diphenol or mixtures thereof, and (3) POCl.sub.3 are disclosed.

Polyester composition containing a benzene phosphorus oxydichloride, a

Reaction of halides of alkyl and aryl phosphonic acids of the formula RP(O)X.sub.2, where R is an C.sub.1 -C.sub.20 alkyl or aryl, e.g., phenyl, group or a halo- substituted C.sub.1 -C.sub.20 alkyl group or aryl group, e.g., phenyl, and an epoxy group containing alcohol of the formula ##STR1## where n is an integer from 1 to 8, e.g., glycidol, give a compound having the formula ##STR2## where R and n are as defined above which can be used as a flame retardant in polyurethane foams.

Polyurethane foam containing a flame retardant

Flame retardant polymers of benzene phosphorus oxydichloride, 4,4'-thiodiphenol and POCl.sub.3 are disclosed which are preferably formed by reacting these monomers in an inert organic solvent at ambient temperature in the presence of an amine acid acceptor.

Polymers of benzene phosphorus oxydichloride, 4,4'-thiodiphenol and

A fire retardant additive comprising particles of a polymer of: 1. at least one halogen-containing alpha, betaethylenically unsaturated monomer; 2. at least one bis(hydrocarbyl)vinyl phosphonate having the structure: ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl, C.sub.1 -C.sub.18 alkyl and ##STR2## wherein R and R' are hydrocarbyl and substituted hydrocarbyl groups which can be the same, different or conjoint; and, 3. at least one third comonomer selected from the group consisting of alpha olefins, vinyl esters of carboxylic acids, C.sub.1 -C.sub.20 alkyl esters of acrylic and methacrylic acid, ethylenically unsaturated dicarboxylic acids, the corresponding anhydrides thereof and the C.sub.1 -C.sub.20 mono and dialkyl esters thereof, amides of ethylenically unsaturated carboxylic acids and the N-methylol and diacetone derivatives thereof, vinyl aryl compounds, C.sub.1 -C.sub.20 alkyl vinyl ethers, aliphatic dienes and glycidyl esters of acrylic and methacrylic acid. The polymers of the present invention are useful as fire retardant additives for coatings, adhesives, binders, impregnants, laminants, paint bases, other polymers and the like.

Fire retardant polymeric additives

A fire retardant additive comprising particles of a polymer of:

A fire retardant additive comprising particles of a polymer of: 1. at least one halogen-containing alpha, beta-ethylenically unsaturated monomer; 2. at least one bis(hydrocarbyl)vinyl phosphonate having the structure: ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl C.sub.1 -C.sub.18 alkyl, and ##STR2## wherein R and R' are hydrocarbyl and substituted hydrocarbyl groups which can be the same, different or conjoint; and, 3. at least one third comonomer selected from the group consisting of alpha olefins, vinyl esters of carboxylic acids, C.sub.1 -C.sub.20 alkyl esters of acrylic and methacrylic acid, ethylenically unsaturated dicarboxylic acids, the corresponding anhydrides thereof and the C.sub.1 -C.sub.20 mono and dialkyl esters thereof, amides of ethylenically unsaturated carboxylic acids and the N-methylol and diacetone derivatives thereof, vinyl aryl compounds, C.sub.1 -C.sub.20 alkyl vinyl ethers, aliphatic dienes and glycidyl esters of acrylic and methacrylic acid. The polymers of the present invention are useful as fire retardant additives for coatings, adhesives, binders, impregnants, laminants, paint bases, other polymers and the like.

Self-extinguishing, thermoplastic polymer compositions are prepared by the intimate admixture of a thermoplastic polymer with a copolymer of a halogen containing ethylenically unsaturated monomer and a phosphorus containing vinyl monomer, particularly a bis(hydrocarbyl)vinylphosphonate. The thus modified thermoplastic polymers display a high degree of flame retardance without any substantial changes in their physical properties including, for example, their clarity and hardness and the resulting compositions may be safely employed in any application requiring their possible exposure to fire or high temperatures.

Fire retardant thermoplastic polymer compositions

Fire retardant polymeric additives of vinylidene halides with

Suspension copolymer composition

Reaction of halides of alkyl and aryl phosphonic acids of the formula RP(O)X.sub.2, where R is an C.sub.1 -C.sub.20 alkyl or aryl, e.g., phenyl, group or a halo- substituted C.sub.1 -C.sub.20 alkyl group or aryl group, e.g., phenyl, and an epoxy group containing alcohol of the formula ##EQU1## where n is an integer from 1 to 8, e.g., glycidol, give a compound having the formula ##EQU2## where R and n are as defined above which can be used as a flame retardant in polyurethane foams.

Growing community of inventors

Monsey, NY, United States of America

Siegfried Altscher