Star-branched thermoplastic ionomers

Details Star-branched thermoplastic ionomers Star-branched thermoplastic ionomers

1989-01-06

1991-08-13

Bleutge, John C.

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

Synthetic resins

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

525353, 149 199, C08F29300

Patent

active

050397524

ABSTRACT:
Novel star-branched ionomers having at least three branches covalently bonded to a central linking moiety; each branch contains a long inner block comprising non-ionic mers and an outer block comprising at least two ionic mers. Elasticity is provided by the non-ionic blocks and the ionic outer blocks aggregate at room temperature but dissociate and higher temperature, giving the star-branched ionomers thermoplastic characteristics. Star-branched polymers may be provided by growing a first (outer) block as a linear polymer, growing a second (inner) block from the end of the living polymer, linking three or more such linear block polymers to a central linker compound and selectively ionizing the first blocks.

REFERENCES:
patent: 3577357 (1971-05-01), Winkler
patent: 3985830 (1976-10-01), Fetters et al.

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