Flame retardant vinylidene chloride latexes and coatings thereof
AssigneeGenCorp Inc.
InventorTerry C. Neubert
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Abstract
A latex copolymer composition is produced having good flame retardancy. The copolymer is typically made from vinylidene chloride monomers, conjugated diene monomers, vinyl substituted aromatic monomers, and functional monomers such as unsaturated mono or dicarboxylic acids. Through the use of flame retardant agents such as halogenated waxes, metallic salts, and the like, the pliability or softness, as well as the strength of the copolymer composition, can be controlled. Flexibilizing agents can optionally be utilized to abate cracking, especially after heat aging. The composition can optionally be pigmented. The flame retardant latex composition can be utilized as coatings on various substrates such as mats, fibers, and the like.
Claims11
A flame retardant latex copolymer composition, comprising;
- a latex copolymer, said latex copolymer made from a conjugated diene monomer having from 4 to 8 carbon atoms, a vinyl substituted aromatic monomer having from 8 to 12 carbon atoms, at least one functional monomer, and a vinylidene chloride monomer, the composition containing an effective amount of at least one compatible flame retardant agent so that a char length of 5 inches or less is obtained according to NFPA 701 Small Scale Flammability Test, said compatible flame retardant agent being a halogenated wax, a halogenated phosphate, a metallic hydrate, a metal oxide, or combinations thereof, and from about 0.1 to about 10 parts by weight per 100 parts by weight of said latex copolymer of a flexibilizing agent, said flexibilizing agent being a primary amine, a secondary amine, a tertiary amine, a polyamine, or an amine alccohol.
A flame retardant carboxylated vinylidene chloride type latex copolymer coating composition, comprising:
- a carboxylated vinylidene chloride latex copolymer, at least one flame retardant agent, and from about 0.1 to about 10 parts by weight per 100 parts by weight of said latex copolymer of an amine flexibilizing agent, said latex copolymer made from latex forming monomers containing from about 20% to about 80% by weight per 100 parts by weight of the total latex forming monomers of a vinylidene chloride monomer, from about 10% to about 80% by weight based upon the weight of all monomers forming said latex copolymer of a conjugated diene monomer having from 4 to 8 carbon atoms, from about 1% to about 60% by weight based upon the weight of all monomers forming said latex copolymer of a vinyl substituted aromatic monomer having from about 8 to about 12 carbon atoms, and from about 0.5% to about 10% by weight based upon the weight of all monomers forming said latex copolymer of a functional monomer, wherein said functional monomer is an acrylamide, a methacrylamide, or alkyl derivatives thereof having from 1 to 2 carbon atoms attached to the nitrogen atom or to the vinyl group, a vinyl ether having the formula ##STR3## wherein R' is an alkyl group having from 1 to 6 carbon atoms, or a substituted chloroalkyl group having from 1 to 6 carbon atoms;
- or an unsaturated monocarboxylic acid or an unsaturated dicarboxylic acid having a total of from 3 to 8 carbon atoms,
- wherein the amount of said flame retardant agent is from about 5 to about 150 parts by weight per 100 parts by weight of said latex copolymer of a halogenated paraffin wax having a molecular weight of from about 200 to about 2,000, optionally from about 5 to about 150 parts by weight per 100 parts by weight of said latex copolymer of a halogenated phosphate, optionally from about 10 parts by weight to about 500 parts by weight per 100 parts by weight of a metallic hydrate, optionally from about 5 to about 300 parts by weight per 100 parts by weight of said latex copolymer of a metal oxide, and
- wherein said amine flexibilizing agent is a primary amine having from 0 to 30 carbon atoms, a secondary amine having from 1 to 30 carbon atoms, a tertiary amine having from 2 to 30 carbon atoms, a polyamine, or an amine alcohol having from 2 to 30 carbon atoms.
Dependencies are inferred from the claim text.