Shell Research Limited

Nova Chemicals (International) S.a.

Shell Internationale Research Maatschappij, B.v.

Laurentius N Nelissen

Johannes M Zijderveld

Eric Wilhelmus Neijman

Jeroen Joost Crevecoeur

Gerardus J De Koning

Henricus C Timmermans

Process for the preparation of polymer particles

Process for the manufacture of modified polyphenylene ether or structurally related polymers, comprising the reaction of polyphenylene ether or structurally related polymer with a cyclic acid anhydride, in the presence of a non nucleophilic base, and in an inert polar organic solvent and preferably in a vinyl substituted aromatic monomer as solvent; modified polyphenylene ethers so obtained and use of them for the manufacture of modified high temperature rigid poly(vinyl substituted aromatic) polymer compositions.

Process for modification of polyphenylene ether or related polymers with

Process for the manufacture of modified polyphenyl ether or structurally related polymers comprising the reaction of said compound with a para substituted phenylsulphonyl halide, in the presence of a substituted pyridine derivative as catalyst and an acid neutralizing agent, and in a vinyl substituted aromatic monomer as solvent; modified polyphenylene ethers or structurally related polymers so obtained and use of them for the manufacture of modified high temperature rigid poly(vinyl substituted aromatic) polymer compositions.

Process for preparation of modified polyphenylene ether or related

Process for the manufacture of modified polyphenylene ether or structurally related polymers comprising:

Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions, obtainable by a process comprising:

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Eindhoven, Netherlands

Laurentius N Nelissen