Patent US4176028A successfully refreshed from Google Patents.
US4176028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastisols made with polyelectrolyte binders
Assignee: EIDP Inc
•
Filing: 1977-03-22
•
Granted: 1979-11-27
•
Expires: 1997-03-22
Abstract
Abstract Thermally coalescible plastisols and organosols of the invention comprise dispersions of single-phase particles of random polymers or copolymers that comprise organic polyelectrolytes that contain at least 1% by weight of ionizable monomer or comonomer, dispersed in a medium that comprises a nonvolatile liquid that is compatible with the resin. Incorporation of a photopolymerizable, ethylenically unsaturated compound provides photosensitive plastisols and organosols useful for making relief and planographic printing plates, photoresists, and the like.
Inventors
- 👤 Boynton Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; G03F7/033
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A thermally coalescible non-aqueous resin dispersion plastisol or organosol of single-phase particles of a random polymer or copolymer which comprises an organic polyelectrolyte that contains at least 1% by weight of an ionizable monomer or comonomer, said organic polyelectrolyte being polymer produced by the addition polymerization of ethylenically unsaturated monomer, dispersed in a medium that comprises a liquid that is nonvolatile at room temperature and is compatible with and a plasticizer for the resin, the liquid portion of said dispersion containing a photopolymerizable ethylenically unsaturated monomeric compound and at least one photoinitiator, said dispersion being coalescible to a clear dry film containing said organic polyelectrolyte and liquid plasticizer.
Claim 2
Dependent Claim
108 words
A thermally coalescible non-aqueous resin dispersion plastisol or organosol of single-phase particles of a random polymer or copolymer which comprises an organic polyelectrolyte that contains at least 1% by weight of an ionizable monomer or comonomer, said organic polyelectrolyte being polymer produced by the addition polymerization of ethylenically unsaturated monomer, dispersed in a medium that comprises a liquid that is nonvolatile at room temperature and is compatible with and a plasticizer for the resin, the liquid portion of said dispersion containing a photopolymerizable ethylenically unsaturated monomeric compound and at least one photoinitiator, said dispersion being coalescible to a clear dry film containing said organic polyelectrolyte and liquid plasticizer.
Claim 3
Dependent Claim
21 words
A dispersion according to claim 1 wherein the organic polyelectrolyte comprises at least 50% by weight of the polymer or copolymer.
Claim 4
Dependent Claim
20 words
A dispersion according to claim 1 wherein the photopolymerizable ethylenically unsaturated monomeric compound is a polyfunctional acrylic or methacrylic monomer.
Claim 5
Dependent Claim
21 words
A dispersion according to claim 1 wherein the liquid medium is free of surfactant containing ether groups or long-chain acid groups.
Claim 6
Dependent Claim
113 words
A thermally coalescible nonaqueous resin dispersion plastisol or organosol of single-phase particles of a random polymer or copolymer which comprises an organic polyelectrolyte that contains at least 1% by weight of an ionizable monomer or comonomer, the particles of said organic polyelectrolyte being ionic acrylic resin containing at least 80% by weight of acrylic units, dispersed in a medium that comprises a liquid that is nonvolatile at room temperature and is compatible with and a plasticizer for the resin, the liquid portion of said dispersion containing a photopolymerizable ethylenically unsaturated monomeric compound and at least one photoinitiator, said dispersion being coalescible to a clear dry film containing said organic polyelectrolyte and liquid plasticizer.
Claim 7
Dependent Claim
113 words
A thermally coalescible nonaqueous resin dispersion plastisol or organosol of single-phase particles of a random polymer or copolymer which comprises an organic polyelectrolyte that contains at least 1% by weight of an ionizable monomer or comonomer, the particles of said organic polyelectrolyte being ionic acrylic resin containing at least 80% by weight of acrylic units, dispersed in a medium that comprises a liquid that is nonvolatile at room temperature and is compatible with and a plasticizer for the resin, the liquid portion of said dispersion containing a photopolymerizable ethylenically unsaturated monomeric compound and at least one photoinitiator, said dispersion being coalescible to a clear dry film containing said organic polyelectrolyte and liquid plasticizer.
Claim 8
Dependent Claim
25 words
A dispersion according to claim 5 wherein the polymeric particles are salts of methyl methacrylate/methacrylic acid copolymers in ratios by weight of 80:20 to 99:1.
Claim 9
Dependent Claim
15 words
A dispersion according to claim 6 wherein the salts are ammonium salts of the copolymers.
Claim 10
Dependent Claim
15 words
A dispersion according to claim 6 wherein the salts are amine salts of the copolymers.
Claim 11
Dependent Claim
15 words
A dispersion according to claim 3 wherein the ethylenically unsaturated monomeric compound is trimethylolpropane triacrylate.
Claim 12
Dependent Claim
15 words
A dispersion according to claim 3 wherein the ethylenically unsaturated monomeric compound is trimethylolpropane trimethacrylate.
Claim 13
Dependent Claim
18 words
A photopolymerizable element which comprises a support bearing a coalesced layer of the dispersion according to claim 1.
References Cited (Backward Citations)
US3413973A
Cited
US2892712A
Cited
US2893868A
Cited
US2986507A
Cited
US3887450A
Cited
US3887450B1
Cited
US3833384A
Cited
US4025346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |