Block copolymers and method for making same

Details Block copolymers and method for making same Block copolymers and method for making same

2006-11-21

2006-11-21

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S089000, C525S258000, C525S280000, C525S316000, C525S338000

Reexamination Certificate

active

07138456

ABSTRACT:
The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

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