US5100949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overcoating agents for heat-sensitive recording materials
Assignee: Arakawa Chemical Industries Ltd
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Filing: 1989-03-08
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Granted: 1992-03-31
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Expires: 2009-03-08
Abstract
Abstract This invention provides (i) an overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing an acrylamide or methacrylamide as a monomer (A), a methyl acrylate or methacrylate as a monomer (B), an acrylic or methacrylic acid as a monomer (C) and if required, a monomer other than said monomers as a monomer (D) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water, and (ii) an overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing a methyl acrylate or methacrylate as a monomer (E), a lower hydroxyalkyl acrylate or methacryalte as a monomer (F), an acrylic or methacrylic acid as a monomer (G) and if required, a monomer other than said monomers as a monomer (H) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water.
Inventors
- 👤 Nobuyuki Takahashi
- 👤 Tetsuya Inoue
- 👤 Mika Koda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:18
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/44; C; C09; C09D; C09D151/00; C09D151/003; B41M2205/00; B41M2205/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
An overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing an acrylamide or methacrylamide as a monomer (A), a methyl acrylate or methacrylate as a monomer (B), an acrylic or methacrylic acid as a monomer (C) and optionally, a monomer other than said monomers as a monomer (D) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water.
Claim 2
Dependent Claim
80 words
An overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing an acrylamide or methacrylamide as a monomer (A), a methyl acrylate or methacrylate as a monomer (B), an acrylic or methacrylic acid as a monomer (C) and optionally, a monomer other than said monomers as a monomer (D) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water.
Claim 3
Dependent Claim
73 words
An overcoating agent for heat-sensitive recording materials according to claim 1 wherein the emulsion of graft copolymer is one prepared by graft-copolymerizing 5 to 40% by weight of the monomer (A), 40 to 90% by weight of the monomer (B), 1 to 20% by weight of the monomer (C) and 0 to 30% by weight of the monomer (D), of 100% by weight of the total amount of the monomers to be used.
Claim 4
Dependent Claim
82 words
An overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing a methyl acrylate or methacrylate as a monomer (E), a lower hydroxyalkyl acrylate or methacrylate as a monomer (F), an acrylic or methacrylic acid as a monomer (G) and optionally, a monomer other than said monomers as a monomer (H) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water.
Claim 5
Dependent Claim
82 words
An overcoating agent for heat-sensitive recording materials which contains as an active component an emulsion of a graft copolymer prepared by graft-copolymerizing a methyl acrylate or methacrylate as a monomer (E), a lower hydroxyalkyl acrylate or methacrylate as a monomer (F), an acrylic or methacrylic acid as a monomer (G) and optionally, a monomer other than said monomers as a monomer (H) which is copolymerizable therewith onto a polyvinyl alcohol in the presence of a fatty acid ester of sucrose and water.
Claim 6
Dependent Claim
73 words
An overcoating agent for heat-sensitive recording materials according to claim 3 wherein the emulsion of graft copolymer is one prepared by graft-copolymerizing 15 to 85% by weight of the monomer (E), 15 to 75% by weight of the monomer (F), 5 to 50% by weight of the monomer (G) and 0 to 30% by weight of the monomer (H), of 100% by weight of the total amount of the monomers to be used.
Claim 7
Dependent Claim
47 words
An overcoating agent for heat-sensitive recording materials according to any one of claims 1 to 4 wherein the polyvinyl alcohol is used in an amount of 5 to 50 parts by weight per 100 parts by weight of the total amount of the monomers to be used.
Claim 8
Dependent Claim
50 words
An overcoating agent for heat-sensitive recording materials according to any one of claims 1 to 4 wherein the fatty acid ester of sucrose is used in an amount of 1 to 30 parts by weight per 100 parts by weight of the total amount of the monomers to be used.
Claim 9
Dependent Claim
30 words
An overcoating agent for heat-sensitive recording materials according to any one of claims 1 to 4 wherein the HLB of the fatty acid ester of sucrose is 1 to 16.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |