EP0308146A2
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EP
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Non-aqueous dispersion polymerization
Assignee: Air Products and Chemicals Inc
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Filing: 1988-09-09
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Granted: —
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Expires: 2008-09-09
Abstract
Abstract A non-aqueous dispersion polymer having a high solids content and substantial adhesive properties is prepared by copolymerizing a selected monomer with a polymeric monomer and a polar monomer in an organic diluent to produce an insoluble polymer dispersed in the organic phase.
Inventors
- 👤 Richard A. Bafford
- 👤 George E. Faircloth
- 👤 Hsueh C. Lee
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 11:00
CPC Classifications
C; C08; C08F; C08F10/00; C08F290/00; C08F290/02; C08F290/04; C08F290/044; C08F2/00; C08F2/04; C08F2/06; C08F2/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
A process for preparing a stable dispersion of a polymer in a non-aqueous diluent comprising a homogeneous mixture of monomers and a polymerization catalyst wherein the monomer mixture comprises: (A) at least one ethylenically unsaturated monomer capable of free radical addition polymerization; (B) a polar monomer which is an unsaturated carboxylic acid or a substituted alkyl acrylate derivative; and (C) a polymeric monomer which is a linear, uniform molecular weight polymer terminated with a polymerizable moiety.
Claim 2
Dependent Claim
76 words
A process for preparing a stable dispersion of a polymer in a non-aqueous diluent comprising a homogeneous mixture of monomers and a polymerization catalyst wherein the monomer mixture comprises: (A) at least one ethylenically unsaturated monomer capable of free radical addition polymerization; (B) a polar monomer which is an unsaturated carboxylic acid or a substituted alkyl acrylate derivative; and (C) a polymeric monomer which is a linear, uniform molecular weight polymer terminated with a polymerizable moiety.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1 wherein (A) is an ester of an unsaturated acid, a vinyl ester of a carboxylic acid or acrylonitrile.
Claim 4
Dependent Claim
37 words
A process as claimed in claim 1 or claim 2 wherein (C) is a polymerizable homopolymer prepared by the polymerization of an anionically polymerizable monomer and terminated by reaction with a halogen-containing compound containing a polymerizable moiety.
Claim 5
Dependent Claim
49 words
A process as claimed in claim 3 wherein the polymeric monomer comprises an acrylate ester of polystyryl alcohol having a molecular weight in the range of from 4000 to 50,000 or a methacrylate ester of polystyryl alcohol having a molecular weight in the range of from 4000 to 50,000.
Claim 6
Dependent Claim
34 words
A process as claimed in any one of the preceding claims wherein the polymeric monomer and/or the polar monomer each comprise at least 5% by weight of the total weight of the dispersion polymer.
Claim 7
Dependent Claim
26 words
A process as claimed in any one of the preceding claims wherein the diluent is a polar solvent which is an aliphatic ketone or an alcohol.
Claim 8
Dependent Claim
28 words
A process as claimed in any one of the preceding claims wherein free radial polymerization is initiated by a free radical catalyst of the azo or peroxygen type.
Claim 9
Dependent Claim
37 words
A process as claimed in any one of the preceding claims wherein the insoluble dispersed polymer is stabilized in the diluent by hydrogen bonding between the diluent and polar groups on the surface of the dispersed polymer.
Claim 10
Dependent Claim
25 words
A process as claimed in claim 8 wherein the source of dispersed polymer polar groups for hydrogen bonding with the diluent is the polar monomer.
Claim 11
Dependent Claim
37 words
A polymer dispersion is a non-aqueous diluent which is obtained by a process as claimed in any one of claims 1 to 9 which is a milky non-settling dispersion having a viscosity of less than 40,000 cps.
Claim 12
Dependent Claim
86 words
A polymer dispersion in a non-aqueous diluent comprising in percent by weight based on the total weight of monomers used to form the polymer: (a) from 75% to 90% of at least one ethylenically unsaturated monomer capable of free radical addition polymerization; (b) from 5% to 10% of a polar monomer which is an unsaturated carboxylic acid or a substituted alkyl acrylate derivative; and (c) from 5% to 15% of a polymeric monomer which is a linear, uniform molecular weight polymer terminated with a polymerizable moiety.
Claim 13
Dependent Claim
86 words
A polymer dispersion in a non-aqueous diluent comprising in percent by weight based on the total weight of monomers used to form the polymer: (a) from 75% to 90% of at least one ethylenically unsaturated monomer capable of free radical addition polymerization; (b) from 5% to 10% of a polar monomer which is an unsaturated carboxylic acid or a substituted alkyl acrylate derivative; and (c) from 5% to 15% of a polymeric monomer which is a linear, uniform molecular weight polymer terminated with a polymerizable moiety.
Claim 14
Dependent Claim
24 words
A polymer dispersion as claimed in claim 10 or claim 11 wherein the non-aqueous diluent is methyl ketone or toluene, or a mixture thereof.
Claim 15
Dependent Claim
54 words
A polymer dispersion as claimed in any one of claims 10 to 12 comprising in percent by weight based on the total weight of monomers used: (A) about 75% to about 90% of 2-ethyhexyl acrylate; (B) about 5% to about 10% of acrylic acid; and (C) about 5% to about 15% of polystyryl monomethacrylate.
References Cited (Backward Citations)
No citation records indexed.
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