US4767816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol-stabilized vinyl chloride-ethylene-hydroxyethyl acrylate copolymer emulsions having enhanced water and solvent resistant properties
Assignee: Air Products and Chemicals Inc
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Filing: 1987-06-24
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Granted: 1988-08-30
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Expires: 2007-06-24
Abstract
Abstract An aqueous copolymer emulsion comprising a copolymer consisting essentially of vinyl chloride, ethylene and up to 10 wt % hydroxyalkyl (meth)acrylate colloidally dispersed in an aqueous medium. The copolymer demonstrates improved solvent resistance and metal adhesion, especially to low energy films.
Inventors
- 👤 John G. Iacoviello
- 👤 William J. Hook
- 👤 Bheema R. Vijayendran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:10
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/06; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
34 words
In an aqueous polyvinyl alcohol-stabilized vinyl chloride-ethylene copolymer emulsion, the improvement which comprises the copolymer also containing up to 10 wt % of a C 2 -C 4 hydroxyalkyl (meth)acrylate, based on vinyl chloride.
Claim 2
Dependent Claim
34 words
In an aqueous polyvinyl alcohol-stabilized vinyl chloride-ethylene copolymer emulsion, the improvement which comprises the copolymer also containing up to 10 wt % of a C 2 -C 4 hydroxyalkyl (meth)acrylate, based on vinyl chloride.
Claim 3
Dependent Claim
16 words
The copolymer emulsion of claim 1 in which the copolymer is 2-8 wt % hydroxyalkyl (meth)acrylate.
Claim 4
Dependent Claim
18 words
The copolymer emulsion of claim 1 in which the copolymer is up to 10 wt % hydroxyethyl acrylate.
Claim 5
Dependent Claim
18 words
The copolymer emulsion of claim 1 in which the copolymer is up to 10 wt % hydroxypropyl acrylate.
Claim 6
Dependent Claim
72 words
A copolymer emulsion comprising an aqueous colloidal dispersion of 20-70% solids of a copolymer prepared by the emulsion polymerization of a monomer mixture consisting essentially of 65-90 wt % vinyl chloride, 5-35 wt % ethylene, and up to 10 wt % C 2 -C 4 hydroxyalkyl (meth)acrylate in the presence of a stabilizing system consisting essentially of 3 to 15 wt % polyvinyl alcohol which is 70 to 91 mole % hydrolyzed.
Claim 7
Dependent Claim
72 words
A copolymer emulsion comprising an aqueous colloidal dispersion of 20-70% solids of a copolymer prepared by the emulsion polymerization of a monomer mixture consisting essentially of 65-90 wt % vinyl chloride, 5-35 wt % ethylene, and up to 10 wt % C 2 -C 4 hydroxyalkyl (meth)acrylate in the presence of a stabilizing system consisting essentially of 3 to 15 wt % polyvinyl alcohol which is 70 to 91 mole % hydrolyzed.
Claim 8
Dependent Claim
16 words
The copolymer emulsion of claim 5 in which the copolymer is 75-80 wt % vinyl chloride.
Claim 9
Dependent Claim
16 words
The copolymer emulsion of claim 5 in which the copolymer is 2-8 wt % hydroxyalkyl (meth)acrylate.
Claim 10
Dependent Claim
16 words
The copolymer emulsion of claim 5 in which the copolymer is 2-8 wt % hydroxyethyl acrylate.
Claim 11
Dependent Claim
16 words
The copolymer emulsion of claim 5 in which the copolymer is 2-8 wt % hydroxypropyl acrylate.
Claim 12
Dependent Claim
66 words
A copolymer emulsion comprising an aqueous colloidal dispersion of 40-60% solids copolymer prepared by the emulsion polymerization of a monomer mixture consisting essentially of 65-90 wt % vinyl chloride, 5-35 wt % ethylene, and up to 10 wt % hydroxyethyl acrylate in the presence of a stabilizing system consisting essentially of 3 to 15 wt % polyvinyl alcohol which is 70 to 91 mole % hydrolyzed.
Claim 13
Dependent Claim
66 words
A copolymer emulsion comprising an aqueous colloidal dispersion of 40-60% solids copolymer prepared by the emulsion polymerization of a monomer mixture consisting essentially of 65-90 wt % vinyl chloride, 5-35 wt % ethylene, and up to 10 wt % hydroxyethyl acrylate in the presence of a stabilizing system consisting essentially of 3 to 15 wt % polyvinyl alcohol which is 70 to 91 mole % hydrolyzed.
Claim 14
Dependent Claim
16 words
The copolymer emulsion of claim 10 in which the copolymer is 75-80 wt % vinyl chloride.
Claim 15
Dependent Claim
16 words
The copolymer emulsion of claim 10 in which the copolymer is 2-8 wt % hydroxyethyl acrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |