US4031053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective colloids from alcoholysis products of polyalcohols and polyacrylate esters
Assignee: Celanese Corp
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Filing: 1976-02-05
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Granted: 1977-06-21
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Expires: 1996-02-05
Abstract
Abstract Aqueous dispersions of synthetic polymers have been made by polymerizing ethylenically unsaturated monomers in water in the presence of a protective colloid prepared by copolymerizing the alcoholysis product of a mixture of about 1 to about 3 mols of a di-, tri-, or tetra- polyol and about 1 mole of a tri- or a tetra- acrylate ester. Such aqueous dispersions are useful in paints, adhesives and textile applications, and exhibit improvements in wet adhesion and abrasion resistance.
Inventors
- 👤 Rex L. Bunkley
- 👤 Thomas M. Powanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
In the process for preparing a stable dispersion of polymers of ethylenically unsaturated monomers which comprises reacting said monomers in water in the presence of a protective colloid and an anionic or nonionic surfactant or mixture thereof with a free radical polymerization catalyst under polymerization conditions, the improvement of which comprises using as the protective colloid a polymer of the transesterification product of 1 to about 3 moles of a 2-4 hydroxy group containing alcohol, and about 1 mole of a tri- or tetra-acrylate or methacrylate ester of a tri- or tetra- polyol.
Claim 2
Dependent Claim
93 words
In the process for preparing a stable dispersion of polymers of ethylenically unsaturated monomers which comprises reacting said monomers in water in the presence of a protective colloid and an anionic or nonionic surfactant or mixture thereof with a free radical polymerization catalyst under polymerization conditions, the improvement of which comprises using as the protective colloid a polymer of the transesterification product of 1 to about 3 moles of a 2-4 hydroxy group containing alcohol, and about 1 mole of a tri- or tetra-acrylate or methacrylate ester of a tri- or tetra- polyol.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein the protective colloid is present in the amount of about 0.2 to about 2 weight percent, based on the total weight of the dispersion.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein the amount of protective colloid is 0.4 to 1.6 weight percent.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein the transesterification product is the reaction product of trimethylolpropane and trimethylolpropane triacrylate.
Claim 6
Dependent Claim
18 words
The process of claim 1 wherein the transesterification product is the reaction product of pentaerythritol triacrylate and trimethylolpropane.
Claim 7
Dependent Claim
31 words
The process of claim 1 wherein the polymer of the transesterification product is preformed and added as a polymer to the water prior to the polymerization of the ethylenically unsaturated monomers.
Claim 8
Dependent Claim
26 words
The process of claim 1 wherein the transesterification product polymer is polymerized in situ in the water prior to the polymerization of the ethylenically unsaturated monomers.
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein the ethylenically unsaturated monomer is vinyl acetate.
Claim 10
Dependent Claim
49 words
The process of claim 1 wherein the ethylenically unsaturated monomers are a mixture of vinyl acetate and an alkyl acrylate, dialkyl maleate, or dialkyl fumarate, wherein the alkyl group contains 4 to 8 carbon atoms, in the weight ratio of vinyl acetate to alkyl compound of 90:10 to 50:50.
Claim 11
Dependent Claim
12 words
The process of claim 9 wherein the alkyl acrylate is n-butyl acrylate.
Claim 12
Dependent Claim
29 words
The process of claim 1 wherein the ethylenically unsaturated monomers are alkyl acrylates or methacrylates or mixtures thereof, wherein the alkyl group contains from 1 to 8 carbon atoms.
References Cited (Backward Citations)
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US3686268A
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US3758448A
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US3836576A
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US3876596A
Cited
US3957711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |