Interpolymers of a styrenic monomer, a maleic or halomaleic anhydride monomer and a brominated monomer
AssigneeMonsanto Company
InventorYoon C. Lee
Life of this patent
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Abstract
Disclosed herein are interpolymers of a styrenic monomer, a maleic or halomaleic anhydride monomer and a brominated monomer selected from the group consisting of bromophenyl acrylates, bromophenyl methacrylates, bromoneopentyl acrylates and bromoneopentyl methacrylates. These polymers when formulated with various additives, have a UL-94 rating of at least V-1. The polymers are especially useful for use in radio and T.V. cabinets, furniture, appliance housings and other similar applications.
Claims6
A solid polymer consisting essentially of the interpolymerization product of:
- A. from 55 to 90 percent by weight of a styrene monomer selected from the group consisting of styrene, alpha methyl styrene, chlorostyrene and bromostyrene;
- B. from 5 to 25 percent by weight of a maleic anhydride monomer selected from the group consisting of maleic anhydride, monochloro maleic anhydride and bromo maleic anhydride;
- C. from 5 to 20 percent by weight of a brominated monomer selected from the group consisting of bromophenyl acrylates, bromophenyl methacrylates, bromoneopentyl acrylates and bromoneopentyl methacrylates;
- and
- D. from 0 to 30 percent by weight of a monomer selected from the group consisting of acrylonitrile, methacrylonitrile and methyl methacrylate;
- and with the proviso that the amount of bromine in the polymer due to the brominated monomer of component (C) is at least 3 percent by weight.
A solid polymer consisting essentially of the interpolymerization product of:
- A. from 60 to 83 percent by weight of a styrene monomer selected from the group consisting of styrene, alphamethylstyrene or chlorostyrene;
- B. from 7 to 20 percent by weight of maleic anhydride;
- C. from 10 to 20 percent by weight of a brominated monomer selected from the group consisting of tribromoneopentyl acrylate, tribromoneopentyl methacrylate, tribromophenyl acrylate and tribromophenyl methacrylate;
- and
- D. from 0 to 30 percent by weight of a monomer selected from the group consisting of acrylonitrile, methacrylonitrile and methyl methacrylate;
- with the proviso that the amount of bromine in the polymer due to the brominated monomer of component (C) is at least 6 percent by weight.
A solid polymer consisting essentially of the interpolymerization product of:
- A. from 55 to 90 percent by weight of a styrene monomer selected from the group consisting of styrene, alpha-methyl styrene, chlorostyrene and bromostyrene;
- B. from 5 to 25 percent by weight of a maleic anhydride monomer selected from the group consisting of maleic anhydride, monochloro maleic anhydride and bromomaleic anhydride;
- C. from 5 to 20 percent by weight of a brominated monomer selected from the group consisting of bromoneopentyl acrylates and bromoneopentyl methacrylates;
- and
- D. from 0 to 35 percent by weight of a monomer selected from the group consisting of acrylonitrile, methacrylonitrile and methyl methacrylate;
- and with the proviso that the amount of bromine in the polymer due to the brominated monomer of component (C) is at least 3 percent by weight.
Dependencies are inferred from the claim text.