Treatment of silica

Details Treatment of silica Treatment of silica

1982-05-03

1983-11-15

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526100, 526106, 526130, 526352, 526907, 502236, 502154, 502170, 502215, 502219, 502242, 502256, 502161, C08F 402, C08F 424, C08F 478

Patent

active

RE0314439

ABSTRACT:
A silica-containing composition suitable for supporting chromium to produce a catalyst capable of giving high melt flow olefin polymers for such applications as injection molding and the like requiring a narrow molecular weight distribution, is produced by treating a silica-containing material at an elevated temperature with either (1), CO, (2) a bromine or iodine component, or (3) an oxygen-containing sulfur component, more specifically a carbon, oxygen and sulfur-containing component. Thereafter, anhydrous chromium can be added, for instance, by means of a hydrocarbon solution of a soluble chromium compound, and the resulting composition activated in air to produce a catalyst. The bromine or iodine treated silica contains bound bromine of iodine if the treating agent is HBr, HI, an organic halide of Br or I or elemental Br or I used in conjunction with a reducing agent. This material is a novel composition of matter and is suitable for use as a reinforcing agent in rubber or plastics and as a support for a chromatographic column in addition to be suitable for supporting a chromium compound to produce a catalyst.

REFERENCES:
patent: 2825721 (1958-03-01), Hogan et al.
patent: 2885349 (1959-05-01), Hansford
patent: 3349067 (1967-10-01), Hill
patent: 3353916 (1967-11-01), Lester
patent: 3362946 (1968-01-01), Hogan
patent: 3365439 (1968-01-01), Bjorenson
patent: 3504043 (1970-03-01), Kominami et al.
patent: 3666670 (1972-05-01), Gilbert et al.
patent: 3704287 (1972-11-01), Johnson
patent: 3709853 (1973-01-01), Karapinka
patent: 3879362 (1975-04-01), Chalfont et al.
patent: 3887494 (1975-06-01), Dietz
patent: 3946020 (1976-03-01), Minato et al.
patent: 3953413 (1976-04-01), Hwang et al.
patent: 3976632 (1976-08-01), Delop
patent: 4027088 (1977-05-01), Matsuura et al.
patent: 4053437 (1977-10-01), Liu et al.
patent: 4054538 (1977-10-01), Johnson et al.
patent: 4150209 (1979-04-01), Katzen et al.
J. Phys. Chem., 70, #9, pp. 2937-2945 (1966).
CA, 83, 59929(b), (1975).

Affiliated with

Also associated with

Rating

Treatment of silica does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Treatment of silica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of silica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-152832