Aldehyde-telechelic polyisobutylenes, catalytic method for prepa

Details Aldehyde-telechelic polyisobutylenes, catalytic method for prepa Aldehyde-telechelic polyisobutylenes, catalytic method for prepa

1994-04-13

1995-08-15

Lipman, Bernard

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

Synthetic resins

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

5253337, 525383, C08F 800

Patent

active

054420156

ABSTRACT:
Aldehyde-telechelic polyisobutylenes free of other end groups such as alcohols, olefins, etc., are made by the hydroformylation of polyisobutylene having one or more olefinic end groups in the presence of a rhodium catalyst in combination with an organic phosphorus ligand. Very high conversions of olefin to aldehyde are obtained. Depending upon the number of aldehyde end groups per macromolecule, the telechelic polyisobutylene polymers can be utilized as precursors to form various types of block copolymers, e.g., AB, ABA, or radial block copolymers, with other polymers such as polyurethanes, polyesters, polyamines, and the like.

REFERENCES:
patent: 4316973 (1982-02-01), Kennedy
patent: 4467116 (1984-08-01), van Leeuwen et al.
patent: 4524188 (1985-06-01), Kennedy et al.
patent: 4680168 (1987-07-01), Goodall et al.
"Hydroformylation of Polyisobutene," M. DiSerio, R. Garaffa, and E. Santacesaria, Journal of Molecular Catalysis, 69 (1991) 1-14.

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