Preparation of graft copolymers from macromolecules containing r

Details Preparation of graft copolymers from macromolecules containing r Preparation of graft copolymers from macromolecules containing r

1991-10-11

1993-05-25

Teskin, Fred

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

Synthetic resins

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

525242, 525244, 525251, 525289, 525312, 525319, 525918, C08F25702

Patent

active

052141055

ABSTRACT:
Novel styrene derivatives are disclosed of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a saturated aliphatic hydrocarbon group or an aromatic hydrocarbon group, and R.sub.3 is --OH, Cl, or a group of the formula --OR.sub.4 or ##STR2## wherein R.sub.4 represents a saturated aliphatic hydrocarbon group or an aromatic hydrocarbon groups. The functionalized styrene monomers I as well as polymers and copolymers incorporating such monomer units are useful as initiators, or precursors thereof, for the polymerization of isobutylene under cationic conditions to give graft copolymers containing both styrenic and isobutylenic units. These copolymers have commercial applications such as rubbers, coatings, and luricants.

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