US5158611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper coating composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1991-08-22
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Granted: 1992-10-27
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Expires: 2011-08-22
Abstract
Abstract A process for producing a resin is disclosed, comprising reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent. The resulting resin is useful as a wet strength agent to provide a paper coating composition having improved printability and printing effects.
Inventors
- 👤 Shigeru Ura
- 👤 Haruo Tanaka
- 👤 Hisao Takagishi
- 👤 Yoshiya Fukuyama, deceased
- 👤 heir Hiroko Fukuyama
- 👤 heir Takuya Fukuyama
- 👤 heir Yuko Fukuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:47
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/26; C; C08; C08G; C08G16/00; C08G16/02; D21H19/36; D21H19/44; D21H19/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A paper coating composition comprising: (1) a pigment. (2) an aqueous binder, and (3) a resin which is obtained by reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent, and wherein said alicyclic dibasic carboxylic acid has carboxyl groups directly attached to the alicyclic ring.
Claim 2
Dependent Claim
79 words
A paper coating composition comprising: (1) a pigment. (2) an aqueous binder, and (3) a resin which is obtained by reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent, and wherein said alicyclic dibasic carboxylic acid has carboxyl groups directly attached to the alicyclic ring.
Claim 3
Dependent Claim
42 words
A paper coating composition as in claim 1, wherein said composition contains from 1 to 50 parts by weight of the aqueous binder and from 0.05 to 10 parts by weight of the resin per 100 parts by weight of the pigment.
Claim 4
Dependent Claim
42 words
A paper coating composition as in claim 2 wherein said composition contains from 6 to 40 parts by weight of the aqueous binder and from 0.1 to 3 parts by weight of the resin per 100 parts by weight of the pigment.
References Cited (Backward Citations)
US2244184A
Cited
JPS5531837A
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GB2028848A
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JPS5637397A
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JPS57167315A
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JPS5840322A
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JPS5841994A
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EP0081994A2
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JPS58126394A
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JPS59129229A
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JPS59137597A
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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) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |