US4089646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper coating dyes
Assignee: Diamalt AG
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Filing: 1976-03-09
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Granted: 1978-05-16
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Expires: 1996-03-09
Abstract
Abstract A paper coating dye composition wherein synthetic binding agents partially or totally replace casein and also containing a water retention agent, is described.
Inventors
- 👤 Peter Habereder
- 👤 Friedrich Bayerlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:59
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A paper coating dye composition of the type containing white pigments, binding agents for said pigments and a water retention agent, comprising 0.1 - 5% of a carboxymethyl ether of seed flour as the water retention agent, said carboxymethyl ether being subjected to oxidative, or hydrolytic and oxidative treatment prior to, or subsequent to the etherification, and which has a viscosity of 250 - 4,000 cP measured at 20° C on a Brookfield viscosimeter in a concentration of 4% in cold water.
Claim 2
Dependent Claim
82 words
A paper coating dye composition of the type containing white pigments, binding agents for said pigments and a water retention agent, comprising 0.1 - 5% of a carboxymethyl ether of seed flour as the water retention agent, said carboxymethyl ether being subjected to oxidative, or hydrolytic and oxidative treatment prior to, or subsequent to the etherification, and which has a viscosity of 250 - 4,000 cP measured at 20° C on a Brookfield viscosimeter in a concentration of 4% in cold water.
Claim 3
Dependent Claim
27 words
Paper coating dyes according to claim 1, wherein the water retention agent is a carboxymethyl ether of carob, guarana or of the polysaccharide obtained from tamarindus indica.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |