US4425452A
Expired / Lapsed
US
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Coating color for paper and method for preparation of the same
Assignee: SHIZUOKA PREFECTURE KEISABURO YAMAMOTO (GOVERNOR)
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Filing: 1981-10-14
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Granted: 1984-01-10
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Expires: 2001-10-14
Abstract
Abstract Coating color and method for providing an excellent coating condition and paper quality through steps comprising a direct addition of enzymatically converted powdered or granulated dry starch to an aqueous suspension of pigments. The dry starch is soluble and impasted in the cold aqueous suspension of pigments without impastation heat and/or other equipment.
Inventors
- 👤 Kojiro Nakata
- 👤 Yasunobu Endo
- 👤 Akitomo Terada
- 👤 Kazumasa Hayashi
- 👤 Michio Kobori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; C; C08; C08L; C08L3/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
95 words
A coating color for paper, comprising: 100 parts by weight of pigments; about 1 part to about 50 parts by weight of enzymatically converted dry starch in powder or granule form, which contains 20% or less by weight moisture, 2.0% or less by weight crude protein, 1.0% or less by weight crude fat, 1.0% or less by weight crude fiber, 1.0% or less by weight crude ash, 20% or less by weight dextrose equivalent, and having a viscosity of a 30% by weight content suspension thereof of 3000 cp or less; and insolubilizers; and water.
Claim 2
Dependent Claim
95 words
A coating color for paper, comprising: 100 parts by weight of pigments; about 1 part to about 50 parts by weight of enzymatically converted dry starch in powder or granule form, which contains 20% or less by weight moisture, 2.0% or less by weight crude protein, 1.0% or less by weight crude fat, 1.0% or less by weight crude fiber, 1.0% or less by weight crude ash, 20% or less by weight dextrose equivalent, and having a viscosity of a 30% by weight content suspension thereof of 3000 cp or less; and insolubilizers; and water.
Claim 3
Dependent Claim
36 words
A coating color according to claim 1, wherein said insolubilizers are at least one selected from the group consisting of dialdehyde compounds, polyalkylene ureas, polyamide ureas, formaldehyde, N-methylol compounds, soluble condensed N-methylol compounds and epoxy compounds.
Claim 4
Dependent Claim
99 words
A coating color for paper, comprising: 100 parts by weight of pigments; about 1 part to about 50 parts by weight of enzymatically converted dry starch in powder or granule form, which contains 20% or less by weight moisture, 2.0% or less by weight crude protein, 1.0% or less by weight crude fat, 1.0% or less by weight crude fiber, 1.0% or less by weight crude ash, 20% or less by weight dextrose equivalent, and having a viscosity of a 30% by weight content suspension thereof of 3000 cp or less; and insolubilizers; synthetic latices; auxiliary agents; and water.
Claim 5
Dependent Claim
99 words
A coating color for paper, comprising: 100 parts by weight of pigments; about 1 part to about 50 parts by weight of enzymatically converted dry starch in powder or granule form, which contains 20% or less by weight moisture, 2.0% or less by weight crude protein, 1.0% or less by weight crude fat, 1.0% or less by weight crude fiber, 1.0% or less by weight crude ash, 20% or less by weight dextrose equivalent, and having a viscosity of a 30% by weight content suspension thereof of 3000 cp or less; and insolubilizers; synthetic latices; auxiliary agents; and water.
Claim 6
Dependent Claim
36 words
A coating color according to claim 3, wherein said insolubilizer is at least one selected from the group consisting of dialdehyde compounds, polyalkylene ureas, polyamide ureas, formaldehyde, N-methylol compounds, soluble condensed N-methylol compounds and epoxy compounds.
Claim 7
Dependent Claim
51 words
A coating color according to claim 3, wherein said synthetic latices are at least one selected from the group consisting of diene derivative polymers, modified functional group-having diene derivative polymers, acryl derivative polymers, modified functional group-having acryl derivative polymers, vinyl acetate derivative polymers, and modified functional group-having vinyl acetate derivative polymers.
Claim 8
Dependent Claim
35 words
A coating color according to claim 3, wherein said auxiliary agents are at least one selected from the group consisting of dispersing agents, leveling agents, foam killers, dystuffs, lubricating agents, insolubilizers and water retention aids.
Claim 9
Independent Claim
48 words
A method for the preparation of a coating color for paper, comprising: a step of direct addition of about 1 part to 50 parts by weight of enzymatically converted dry powdered or granulated starch as an adhesive to an aqueous pigment-suspension containing 100 parts by weight of pigment.
Claim 10
Independent Claim
48 words
A method for the preparation of a coating color for paper, comprising: a step of direct addition of about 1 part to 50 parts by weight of enzymatically converted dry powdered or granulated starch as an adhesive to an aqueous pigment-suspension containing 100 parts by weight of pigment.
Claim 11
Dependent Claim
144 words
A method for preparation of a coating color according to claim 7, wherein said starch is prepared by: (1) adjusting a starch slurry to a specific gravity ranging from about 15 to about 24 Be, (2) adding alkali to said starch slurry to adjust to a pH of about 6-7, (3) adding α-amylase with a concentration ranging from about 0.05% to about 1% by weight to said starch slurry, (4) heating the mixture to be impasted to a temperature ranging from about 70° C. to about 100° C., (5) subjecting the resulting paste to an enzymic conversion at a temperature ranging from about 70° C. to about 100° C. for a period ranging from about 0.5 to about 10 hours, (6) inactivating said enzyme, (7) drying said paste, and (8) passing said dry paste through a sieve to thereby yield powdered or granulated paste.
Claim 12
Dependent Claim
12 words
A coating color for paper, prepared by the method of claim 7.
Claim 13
Dependent Claim
12 words
A coating color for paper, prepared by the method of claim 8.
Claim 14
Dependent Claim
81 words
The method for preparation of a coating color for paper as set forth in claim 7, wherein said enzymatically converted dried, powdered, or granulated starch contains 20% or less by weight moisture, 2.0% or less by weight crude protein, 1.0% or less by weight crude fat, 1.0% or less by weight crude fiber, 1.0% or less by weight crude ash, 20% by weight dextrose equivalent, and has a viscosity of a 30% by weight content suspension of 3,000 cp or less.
Claim 15
Dependent Claim
41 words
The method for preparation of a coating color for paper, as set forth in claim 11, including at least one insolubilizer selected from the group consisting of dialdehyde compound, polyalkylene-ureas, polyamide-ureas, formaldehyde, N-methylol compounds, soluble condensed N-Methylol compounds and epoxy compounds.
Claim 16
Dependent Claim
58 words
The method for preparation of a coating color for paper as set forth in claim 7, including at least one synthetic latice selected from the group consisting of diene derivative polymers, modified functional group-having diene derivative polymers, acryl derivative polymers, modified functional group-having acryl derivative polymers, vinyl acetate derivative polymers, and modified functional group-having vinyl acetate derivative polymers.
Claim 17
Dependent Claim
42 words
The method for preparation of a coating color for paper as set forth in claim 7, including at least one auxiliary agent selected from the group consisting of dispersing agents, leveling agents, foam killers, dyestuffs, lubricating agents, insolubilizers, and water retention aids.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |