Hydroformylated block copolymers
Abstract
Abstract NOVEL HYDROXYLATED BLOCK COPOLYMERS ARE MADE BY REACTING A PRECURSOR BLOCK COPOLYMER WITH CARBON MONOXIDE AND HYDROGEN. THE PRECURSOR BLOCK COPOLYMER HAS AT LEAST ONE MONO ALPHA ALKENYL ARENE POLYMER BLOCK AND AT LEAST ONE CONJUGATED DIENE POLYMER BLOCK HAVING BETWEEN 0% AND ABOUT 30%, 1,2 OR 3,4 MICROSTRUCTURE, THE BALANCE BEING 1,4 STRUCTURE. ALTERNATIVELY, THE 1,2 OR 3,4 MICROSTRUCTURE OF THE PRECURSOR POLYMER MAY BE DECREASED OR SUBSTANTIALLY REMOVE DBY SELECTIVE HYDROGENATION BEFORE, HYDROFORMYLANTION. HYDROFORMYLANTION OF THE BLOCK COPOLYMER WITH ABOUT 1:1 TO ABOUT 5:1 HYDROGENCARBON MONOXIDE MIXTURE USING A COMPLEX COBALT CARBONYL TRIHYDROCARBYLPHOSPHINE CATALYST PRODUCES MAINLY -CH2OH SUBSTITUENTS. IN THE HYDROXYLATED POLYMERS SO PRODUCED, 10-100% OF THE OLEFINIC UNSATURATION IN THE DIENE POLYMER BLOCK HAS BEEN REPLACED WITH -CH2OH GROUPS AND 90% TO 0% OF THE UNSATURATION HAS BEEN SATURATED WITH HYDROGEN.
Inventors
- 👤 H Winkler
- 👤 F Neumann
Bibliographic Details
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