US 2012/0238715 A1 · ISOOLEFIN POLYMERS AND PROCESS FOR PREPARING THE SAME

Abstract

The present invention relates to isoolefin polymers and process for preparing the same. The present invention especially discloses a polymerization process for the cationic polymerization of isoolefin monomers in an aqueous reaction medium, and isoolefin polymers obtained by such process. In one embodiment, the present invention relates to a polymerization process for the cationic polymerization of isoolefin monomers in an aqueous reaction medium, and isoolefin polymers obtained therefrom. In another embodiment, the present invention relates to a dispersion polymerization process for the cationic copolymerization of isoolefins with conjugated or non-conjugated diolefins and/or vinyl aromatic compounds, and copolymers obtained therefrom.

Claims14

Dependent claims

1-16. (canceled)

A process for cationic polymerization, comprising:

(1) forming a polymerization system comprising:
an initiating system comprising at least one initiator, at least one additive, at least one Lewis acid and at least one optional diluent, wherein said at least one additive is an organic compound comprising at least one atom chosen from nitrogen, oxygen, sulfur, and phosphor atoms;
an aqueous reaction medium, comprising water ranging from 3.5% to 100% by volume thereof;
at least one isoolefin monomer and at least one optional copolymerizable monomer;
and
at least one optional dispersant;
and
(2) polymerizing the polymerization system formed in step (1), to obtain a homopolymer of the at least one isoolefin monomer or a copolymer of the at least one isoolefin monomer and the at least one optional copolymerizable monomer.

5 more elements

Dependencies are inferred from the claim text.

Isoolefin polymers and process for preparing the same

Life of this patent

Isoolefin polymers and process for preparing the same

Life of this patent

Abstract

Claims14