EP0438216A2
Expired / Lapsed
EP
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Emulsion polymers for high performance aqueous coatings
Assignee: Rohm and Haas Co
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Filing: 1991-01-07
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Granted: —
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Expires: 2011-01-07
Abstract
Abstract Emulsion polymers are disclosed which contain selectively swellable emulsion polymer functionalities and which are cross-linked before film formation to an extent that still allows the polymers to form a film upon application, which film is removable with a stripper solution containing swellant for the polymer functionality. When the polymers are formulated into sacrificial coatings, the polishes produce detergent resistant and removable finishes.
Inventors
- 👤 Richard Thomas Gray
- 👤 Joseph Michael Owens
- 👤 Harrison Scott Killam
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:04
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F246/00; C09; C09G; C09G1/00; C09G1/04; C09G1/06; C09G1/14; C09G1/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
An aqueous emulsion of film-forming polymer particles that contain polymer functional groups that interact with chemical swellants and which polymer particles are covalently crosslinked with multifunctional monomer or reagent before film formation to a degree effective to impede interparticle attachments during film formation, said polymer particles containing an amount of said functional groups greater than the amount effective to absorb sufficient chemical swellant to expand the particles to a degree that disrupts interparticle and film/ substrate attachments in said film to an extent that permits removal of the film.
Claim 2
Dependent Claim
38 words
An emulsion according to claim 1 wherein the functional group is an acid functional group and the chemical swellant is an amine or the functional group is an amine functional group and the chemical swellant is an acid.
Claim 3
Dependent Claim
35 words
An emulsion according to claim 2 wherein the amount of acid functional group is less than the amount effective to render the film of covalently crosslinked polymer particles removable by scrubbing with alkaline detergent solutions.
Claim 4
Dependent Claim
23 words
An emulsion according to claim 1 or claim 2, wherein the emulsion is essentially free of polyvalent metal ionic crosslinkers or residues thereof.
Claim 5
Dependent Claim
40 words
An emulsion according to any one of the preceding claims, wherein the amount of functional monomer is from 3% to 50%, and the amount of multifunctional cross-linking monomer is from 0.15% to 12% percent by weight, based on total polymer.
Claim 6
Dependent Claim
65 words
An emulsion according to claim 2, wherein the amount of acid-functional monomer is from 6% to 30%, and the amount of multifunctional monomer is from 0.2% to 9% percent by weight, based on total polymer; or wherein the amount of amino-functional monomer is from 3% to 20%, and the amount of multifunctional monomer is from 0.2% to 9% percent by weight, based on total polymer.
Claim 7
Dependent Claim
51 words
An emulsion according to any one of claims 1 to 5, wherein the amount of functional monomer is from 3% to 30%, and the amount of multifunctional monomer is selected to produce a polymer having a gel fraction in acetone solvent of from greater than about 0.50 to less than 0.95.
Claim 8
Dependent Claim
62 words
An emulsion according to any one of claims 1 to 5, wherein the amount of functional monomer is from 3% to 30%, and the amount of multifunctional monomer is selected to produce a polymer having a slope of the tan ∂ versus temperature curve in the rubbery plateau of the unformulated polymer emulsion from -0.80 to 4.0, preferably from -0.60 to 3.0.
Claim 9
Dependent Claim
20 words
An emulsion according to claim 1, wherein the emulsion contains preformed emulsion polymer and a post -added multifunctional covalent crosslinker.
Claim 10
Dependent Claim
13 words
A floor polish comprising an emulsion of as claimed in any preceding claims.
Claim 11
Dependent Claim
40 words
An amine strippable, detergent resistant floor polish comprising an emulsion of polymer particles as claimed in claim 10 which contain from 6 % to 20% percent by weight acid-functional monomer and from 0.2 to 0.8 percent by weight multifunctional-crosslinking monomer.
Claim 12
Dependent Claim
21 words
A floor polish according to claim 11 wherein the emulsion is essentially free of polyvalent metal ionic crosslinkers or residues thereof.
Claim 13
Dependent Claim
74 words
A process of making a floor polish comprising: a) preparing an emulsion of particles of swellable polymer from a polymer which contains from 3% to 30% by weight swellant-attracting functional monomer and b) covalently crosslinking the polymer with a multifunctional monomer before the emulsion forms a film, to an extent that the slope of the tan ∂ versus temperature curve in the rubbery plateau of the unformulated polymer emulsion is from -0.10 to 2.50.
Claim 14
Dependent Claim
70 words
A process of making a floor polish comprising: a) preparing an emulsion of particles of swellable polymer from a polymer which contains from 3% to 30% by weight swellant-attracting functional monomer and b) covalently crosslinking the polymer with a multifunctional monomer before the emulsion forms a film, to an extent that the polymer emulsion has a gel fraction in acetone solvent of from greater than 0.60 to less than 0.95.
References Cited (Backward Citations)
No citation records indexed.
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