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US 4,734,472 AGranted
Method for preparing functional alpha-olefin polymers and copolymers
AssigneeExxon Research & Engineering Co.
InventorTze-Chiang Chung
Life of this patent
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Abstract
The present invention relates to a process for the preparation of functional alpha-olefin homo- and copolymers by polymerization through a borane monomer intermediate. Borane monomers, derived from mono-hydroboration of appropriate dienes with dialkyl borane, have been found to be stable to Ziegler-Natta catalysts. In turn, the borane homo- and copolymers are easily converted to a variety of other functionalities; e.g., alcohols, aldehydes, amines, etc.
Claims3
A homopolymer having the formula:
- ##STR2## wherein n=b 6 to 12 and R.sub.1 and R.sub.2 are alkyl or cycloalkyl groups.
A homopolymer having the formula:
- ##STR3## wherein n=3 to 12 and W is a functional group consisting of OH, NH.sub.2 and CHO groups.
A random copolymer having the structure of ##STR4## wherein n=3 to 12;
- x is about 1 to about 99 mole percent;
- y is about 99 to about 1 mole percent;
- R.sub.3 is hydrogen or an alkyl group having about 1 to about 20 carbon atoms;
- and W is selected from the group consisting of OH, NH.sub.2 and CHO groups.
1 more element
Dependencies are inferred from the claim text.