Process for the production of elastomeric, primarily syndiotacti

Details Process for the production of elastomeric, primarily syndiotacti Process for the production of elastomeric, primarily syndiotacti

1990-10-15

1993-12-14

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526351, 526125, C08F 4654, C08F 1006

Patent

active

052704106

ABSTRACT:
A process and a catalyst for the production of elastomeric primarily syndiotactic polypropylene characterized by short average block lengths wherein propylene is 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 hindrance is not provided by a C1.sup.- or 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 (1956-03-01), 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: 3335121 (1965-07-01), Natta 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: 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 (1982-03-01), 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: 4400302 (1983-08-01), Goodall et al.
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.
Thermoplastic Elastomers, C. K. Shih, A. C. L. Su, Hanser Publishers, Munich vienna New York.
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.

Affiliated with

Also associated with

Rating

Process for the production of elastomeric, primarily syndiotacti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of elastomeric, primarily syndiotacti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of elastomeric, primarily syndiotacti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1706557