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US 2012/0059105 A1Published application
Weatherable and Flame-Resistant Thermoplastic Vulcanizates and Methods for Making Them
AssigneeExxonMobil Chemical Patents Inc.
InventorsRandal H. Kerstetter, III, Karla D. Caton, Edward J. Blok, Eugene R. Uhl
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Abstract
A weatherable, flame-resistant thermoplastic vulcanizate composition comprising a thermoplastic matrix; and dispersed within said matrix, an at least partially cured rubber, a flame retardant, and carbon black.
Claims22
A weatherable, flame-resistant thermoplastic vulcanizate composition comprising:
- i. a thermoplastic matrix;
- and
- ii. dispersed within said matrix, an at least partially cured rubber, a flame retardant, and carbon black.
A method for producing a weatherable, flame-resistant thermoplastic vulcanizate, the method comprising:
- i. dynamically vulcanizing a rubber within a molten blend that includes the rubber, a thermoplastic resin, optionally an extender, optionally carbon black, and optionally an inert filler other than carbon black, where the molten blend is substantially devoid of flame retardants, to thereby produce a thermoplastic vulcanizate;
- ii. after said step of dynamically vulcanizing, blending said thermoplastic vulcanizate while in its molten state with a flame retardant and optionally with carbon black, where the flame retardant includes decabromodiphenylethane, antimony trioxide, and zinc borate hydrate, with the proviso that said step of dynamically vulcanizing takes place with carbon black in the molten blend or said step of blending includes blending the thermoplastic vulcanizate with carbon black, to thereby produce a thermoplastic vulcanizate having weatherability and flame resistance;
- and
- iii. extruding the thermoplastic vulcanizate.
1 more element
Dependencies are inferred from the claim text.