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US4343655A
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Insolubilizers for binders for paper coating compositions
Assignee: Sequa Chemicals Inc
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Filing: 1981-05-20
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Granted: 1982-08-10
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Expires: 2001-05-20
Abstract
Abstract Paper coating compositions contain at least one pigment, at least one binder, and as an insolubilizer for the binder an alkylated product of the reaction of glyoxal and a cyclic urea.
Inventors
- 👤 John A. Dodd
- 👤 Robert L. Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/28; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A paper coating composition comprising a pigment, a binder, and as an insolubilizer for the binder the partially or wholly alkylated product of the reaction of approximately stoichiometric amounts of glyoxal and at least one cyclic urea.
Claim 2
Dependent Claim
37 words
A paper coating composition comprising a pigment, a binder, and as an insolubilizer for the binder the partially or wholly alkylated product of the reaction of approximately stoichiometric amounts of glyoxal and at least one cyclic urea.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the amount of insolubilizer is about 2 to 10 percent, based on the weight of the binder.
Claim 4
Dependent Claim
23 words
The composition of claim 1 wherein the amount of insolubilizer is about 3 to 7 percent, based on the weight of the binder.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the binder is a starch.
Claim 6
Dependent Claim
36 words
A process for insolubilizing the binder in a paper coating composition which comprises including in the composition about 2 to 10 percent, based on the weight of the binder, of the reaction product of claim 1.
Claim 7
Dependent Claim
24 words
The process of claim 5 wherein the amount of the insolubilizer is about 3 to 7 percent, based on the weight of the binder.
Claim 8
Dependent Claim
10 words
A cellulosic substrate coated with the composition of claim 1.
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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |