Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1995-11-15
1998-09-15
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526145, 526146, 526147, C08F 406, C08F 440
Patent
active
058079378
ABSTRACT:
Improved processes have been developed for atom (or group) transfer radical polymerization (ATRP). In one improvement, the ATRP process involves polymerizing in the presence of a (partially) free radical-deactivating amount of the corresponding reduced or oxidized transition metal compound. In a further improvement, the ATRP process involves polymerizing in a homogeneous system or in the presence of a solubilized initiating/catalytic system. The present invention also concerns end-functional, site-specific functional and telechelic homopolymers and copolymers; block, random, graft, alternating and tapered (or "gradient") copolymers which may have certain properties or a certain novel structure; star, comb and "hyperbranched" polymers and copolymers; multi-functional hyperbranched, end-functional polymers; cross-linked polymers and gels; water-soluble polymers and hydrogels (e.g., a copolymer prepared by radical copolymerization of a water-soluble monomer and a divinyl monomer); and an ATRP process using water as a medium.
REFERENCES:
patent: 5169914 (1992-12-01), Kaszas et al.
patent: 5405913 (1995-04-01), Harwood et al.
patent: 5451647 (1995-09-01), Faust et al.
Coca Simion
Gaynor Scott G.
Greszta Dorota
Matyjaszewski Krzysztof
Patten Timothy E.
Carnegie Mellon University
Cheng Wu C.
Schofer Joseph L.
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