Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1996-02-05
1997-03-11
Delmendo, Romulo H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
5261246, 526129, 502116, 502119, C08F 4656
Patent
active
056102461
ABSTRACT:
A new catalyst useful in the polymerization of at least one olefin is disclosed. The catalyst comprises the product obtained by contacting silica, in random order, with (1) at least one hydrocarbon soluble magnesium-containing compound; and (2) a first modifying compound selected from the group consisting of silicon halides, boron halides, aluminum halides and mixtures thereof followed by a second modifying compound selected from the group consisting of halides having the structural formula SiH.sub.r X.sup.2.sub.s, where X.sup.2 is halogen; r is an integer of 1 to 3; and s is an integer of 1 to 3 with the proviso that the sum of r and s is 4, a hydrogen halide and mixtures thereof. The product of this step is contacted with a first titanium-containing compound having the structural formula Ti(OR).sub.m X.sub.n, where R is hydrocarbyl or cresyl; X is halogen; m is an integer of 1 to 4; and n is 0 or an integer of 1 to 3, with the proviso that the sum of m and n is 4. Finally, the product of this latter step is, in turn, contacted with a second titanium-containing compound, different from the first titanium-containing compound, having the structural formula TiX.sup.1.sub.p (OR.sup.1).sub.q, where X.sup.1 is halogen; R.sup.1 is hydrocarbyl; p is an integer of 1 to 4; and q is 0 or an integer of 1 to 3, with the proviso that the sum of p and q is 4. A catalyst system comprising the above catalyst, an aluminum-containing first cocatalyst and at least one silane second cocatalyst is also set forth. Finally, a process for polymerizing at least one olefin utilizing the catalyst system of this disclosure is taught.
REFERENCES:
patent: 3135809 (1964-06-01), Bosmajian
patent: 3591656 (1971-06-01), Kroll
patent: 4156063 (1979-05-01), Giannini et al.
patent: 4220554 (1980-09-01), Scata et al.
patent: 4226741 (1980-10-01), Luciani et al.
patent: 4298718 (1981-11-01), Mayr et al.
patent: 4385161 (1983-05-01), Caunt et al.
patent: 4390454 (1983-06-01), Cuffiani et al.
patent: 4394291 (1983-07-01), Hawley
patent: 4472521 (1984-09-01), Band
patent: 4482686 (1984-11-01), Asahi et al.
patent: 4495338 (1985-01-01), Mayr et al.
patent: 4503159 (1985-03-01), Masino et al.
patent: 4508843 (1985-04-01), Etherton et al.
patent: 4526941 (1985-07-01), Sakurai et al.
patent: 4530913 (1985-07-01), Pullukat et al.
patent: 4544716 (1985-10-01), Hawley
patent: 4565795 (1986-01-01), Short et al.
patent: 4595735 (1986-06-01), Nomura et al.
patent: 4612299 (1986-09-01), Arzoumanidis et al.
patent: 4647550 (1987-03-01), Kohora et al.
patent: 4686199 (1987-08-01), Tachikawa et al.
patent: 4732882 (1988-03-01), Allen et al.
patent: 4738942 (1988-04-01), Nowlin
patent: 4743665 (1988-05-01), Sasaki et al.
patent: 4849483 (1989-07-01), Tachikawa et al.
patent: 4857613 (1989-08-01), Zolk et al.
patent: 4916099 (1990-04-01), Sasaki et al.
patent: 4950630 (1990-08-01), Murata et al.
patent: 4950631 (1990-08-01), Buehler et al.
patent: 4990478 (1991-02-01), Hoppin et al.
patent: 5053467 (1991-10-01), Kondo et al.
patent: 5095080 (1992-03-01), Lee et al.
patent: 5104949 (1992-04-01), Buehler et al.
patent: 5143883 (1992-09-01), Buehler et al.
patent: 5232998 (1993-08-01), Buehler et al.
Buehler Charles K.
Masino Albert P.
Delmendo Romulo H.
Heidrich William A.
Quantum Chemical Corporation
LandOfFree
Process for polymerizing propylene using a silica-supported cata 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 polymerizing propylene using a silica-supported cata, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for polymerizing propylene using a silica-supported cata will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-444347