EP0005215A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for polymerizing olefins
Assignee: Phillips Petroleum Co
•
Filing: 1979-04-19
•
Granted: —
•
Expires: 1999-04-19
Abstract
Abstract An olefin or mixture of olefins is polymerized in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent (particle form process). Fouling of the reactor by adherence of polymer particles to the walls of the reactor is reduced by adding to the reaction medium a composition which comprises a mixture of (a) a polysulfone copolymer, (b) a polymeric polyamine, and (c) an oilsoluble sulfonic acid.
Inventors
- 👤 Kenneth Wayne Willcox
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1812; B01J19/1837; B01J19/0006; B01J19/002; C; C08; C08F; C08F10/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00105; B01J2219/0011; B01J2219/00245; B01J2219/00247; C08F2410/00; C08F2410/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A process for polymerizing or copolymerizing olefins in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent, characterized by adding to the reaction medium a composition comprising (a) a polysulfone copolymer; (b) a polymeric polyamine, and (c) an oil-soluble sulfonic acid.
Claim 2
Dependent Claim
52 words
A process for polymerizing or copolymerizing olefins in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent, characterized by adding to the reaction medium a composition comprising (a) a polysulfone copolymer; (b) a polymeric polyamine, and (c) an oil-soluble sulfonic acid.
Claim 3
Dependent Claim
55 words
The method of claim 1 wherein said composition comprises 5-70 weight percent of (a),5-70 weight percent of (b) and 5-70 weight percent of (c), the total being 100 weight percent, and is added to the reaction medium in the range of about 0.03'to 1 parts by weight per million parts by weight of said diluent.
Claim 4
Independent Claim
52 words
The method according to one of claims 1 and 2 wherein said polysulfone is a copolymer of 1-decene having an inherent viscosity within the range of 0.04 to 1.6 dl/g, said polymeric polyamine is a 1:1.5 mol ratio reaction product of N-tallow-1,3-diaminopropane with epichorohydrin, and said oil-soluble sulfonic acid is dodecylbenzenesulfonic acid.
Claim 5
Independent Claim
37 words
A method according to one of claims 1 to 3 wherein said diluent is isobutane and said polymerization is . carried out using a catalyst comprising a silica support containing a chromium compound which has been calcined.
Claim 6
Dependent Claim
18 words
A method according to claim 4 wherein there is present in addition a small amount of hexene-1 comonomer.
Claim 7
Independent Claim
50 words
A method according to one of claims 1 to 5 wherein the composition comprising components (a), (b) and (c), optionally dissolved in a solvent, is used in an amount of from 0.003 to 15 ppm., preferably 0.03 to 1 ppm., based on said diluent and calculated on the solvent-free composition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.