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Patent Owner(s)

Patent Owner	Address
ZENITH INTERNATIONAL S A	BILLODES 34 LE LOCLE

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Inventor Name	Address	# of filed Patents	Total Citations
Vincent, Pierre	Les Lilas, CH	10	144
# of filed Patents : 10 Total Citations : 144

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Full Text

US Patent No: 9029479

Process for the synthesis of functionalized poly (1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers

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Abstract

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Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer(s)/polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200 C; recovering the vinyl aromatic (co) polymer obtained after devolatization; and recycling the solvent/monomer(s) mixture, coming from the devolatization, to step (a).

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