Condensed phase polymers

Details Condensed phase polymers Condensed phase polymers

1987-10-09

1989-08-15

Briggs, Sr., Wilbert J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525288, 525274, 525271, 526173, 526279, C08F21208, C08F23000, C08F23008, C08F23010

Patent

active

048576182

ABSTRACT:
The present invention relates to elastomeric copolymers and block copolymers, e.g., based upon styrene/isoprene, having a novel condensed phase structure wherein polymer branches occur along the polymer backbone, either at a predetermined location or at random locations. The polymers are made by a method which comprises the step of reacting, under polymerization conditions, hydrocarbyl lithium initiator, at least one anionically polymerizable compound, and an organometallic- substituted styrene condensing agent. The reactants may be added simultaneously to proudce a copolymer with polymer branch segments randomly located along the polymer backbone or sequentially to produce a copolymer with branches located at the same predetermined location along the polymer backbone. The resultant polymers may be further reacted with a linking agent to form multi-arm copolymers.

REFERENCES:
patent: 2982757 (1961-05-01), Lewis
patent: 3223686 (1965-12-01), Natta et al.
patent: 3480584 (1969-11-01), Archer et al.
patent: 3629214 (1971-12-01), Buning et al.
patent: 3949020 (1976-04-01), Prudence
patent: 4010226 (1977-03-01), Crossland et al.
patent: 4080400 (1978-03-01), Martin
patent: 4086298 (1978-04-01), Fahrbach et al.
patent: 4143089 (1979-03-01), Martin
patent: 4148838 (1979-04-01), Martin
patent: 4221884 (1980-09-01), Bi et al.
patent: 4248980 (1981-02-01), Bi et al.
patent: 4248982 (1981-02-01), Bi et al.
patent: 4248983 (1981-02-01), Bi et al.
patent: 4248984 (1981-02-01), Bi et al.
patent: 4273896 (1981-06-01), Martin
patent: 4391949 (1983-05-01), St. Clair
Odian, Principles of Polymerization, 2nd Ed., Wiley-Interscience, p. 18 (1981).
Bi & Fetters (Macromolecules 9, 743-742 [1976]).
Nametkin, Chemical Abstract Nos.: 85:47314a (1976); 87:185046g (1977); 89:110569n (1978); and 93:168679x (1980).
Nametkin, Dokl. Nauk SSSR, 215, 861 (1974).
Chaumont (Eur. Poly. J. 15, 537 [1979]).
Kawakami, Polymer J., 14, 913 (1982).
Greber, Angew. Makromol. Chem. 1971, 16/17, 325.
Hirao et al. [Macromolecules 20, 242 (1987)].

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