Process for the production of elastomeric, primarily isotactic p

Details Process for the production of elastomeric, primarily isotactic p Process for the production of elastomeric, primarily isotactic p

1990-02-26

1992-02-18

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502124, 526125, 526141, 526351, C08F 4654, C08F 4649, C08F 1006

Patent

active

050895737

ABSTRACT:
A process and a catalyst for the production of elastomeric primarily isotactic polyolefins characterized by short average block lengths wherein olefins are polymerized in the presence of the catalyst which comprises the reaction product of a magnesium alkoxide and a tetravalent titanium halide which takes place in the presence of an electron donor, an organoaluminum compound, and a selectivity control agent which is an effectively hindered heterocyclic aromatic nitrogen compound wherein the hinderance is provided by a chloro or a methoxy group.

REFERENCES:
patent: 3112300 (1955-06-01), Natta et al.
patent: 3112301 (1955-06-01), Natta et al.
patent: 3175999 (1956-08-01), Natta et al.
patent: 3240773 (1966-03-01), Boor, Jr.
patent: 3257370 (1962-01-01), Natta et al.
patent: 3258455 (1960-06-01), Natta et al.
patent: 3305538 (1967-02-01), Natta et al.
patent: 3329741 (1967-07-01), Schrage et al.
patent: 3335121 (1963-07-01), Natta et al.
patent: 3364190 (1964-04-01), Emrick
patent: 3534006 (1988-06-01), Murata et al.
patent: 3534006 (1967-03-01), Kamaishi et al.
patent: 3932307 (1976-01-01), Setterquist
patent: 3950269 (1976-04-01), Setterquist
patent: 3971767 (1976-07-01), Setterquist
patent: 4011383 (1977-03-01), Setterquist
patent: 4017525 (1977-04-01), Setterquist
patent: 4072809 (1978-02-01), Rogan
patent: 4136243 (1979-01-01), Appleyard et al.
patent: 4189556 (1980-02-01), Karayannis et al.
patent: 4226963 (1980-10-01), Giannini et al.
patent: 4255281 (1981-03-01), Rogan et al.
patent: 4310439 (1982-01-01), Langer
patent: 4317898 (1982-03-01), Karayannis et al.
patent: 4325836 (1982-04-01), Epstein et al.
patent: 4329253 (1982-05-01), Goodall et al.
patent: 4335225 (1981-03-01), Collette et al.
patent: 4336360 (1982-06-01), Giannini et al.
patent: 4347160 (1982-08-01), Epstein et al.
patent: 4393182 (1982-07-01), Goodall et al.
patent: 4394291 (1983-07-01), Hawley
patent: 4442276 (1984-04-01), Kashiwa et al.
patent: 4487845 (1984-12-01), Triplett
patent: 4581342 (1986-04-01), Johnson et al.
patent: 4710482 (1986-06-01), Job
patent: 4754006 (1988-06-01), Murata et al.
patent: 4971936 (1990-11-01), Wilson et al.
Polymer Sequence Determination, James C. Randall.
Macromol. Rev. 2, Syndiotactic Polypropylene, E. A. Youngman and J. Boor, Jr.
Makromol. Chem., Stereochemical Structure and Molecular Weight Distribution of Polypropylenes, Yoshiharu et al.
Thermoplastic Elastomers, C. K. Shih, A. C. L. Su, Hanser Publishers, Munich, Vienna, New York.

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