US3061568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid paper coating emulsion comprising ethyl acrylate-acrylonitrile copolymer, melamine-formaldehyde resin, and sodium di-(c5-c8) branched chain alkyl sulfosuccinate
Assignee: Wyeth Holdings LLC
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Filing: 1959-08-17
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Granted: 1962-10-30
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Anthony R Savina
- 👤 Daniel D Ritson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:47
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A FLUID PAPER COATING EMULSION WHICH WHEN AERATED DEVELOPS FOAM OF SHORT PERSISTENCY AND WHICH, WHEN APPLIED TO PAPER AND DRIED, YIELDS A WATER- AND GREASE-RESISTANT RECOATABLE COATING, WHICH CONSISTS ESSENTIALLY OF AN EMULSION OF A HYDROPHOBIC VINYL PAPER COATING POLYMER, SUBSTANTIALLY ETHYL ACRYLATE AND ACRYLONITRILE COPOLYMERIZED IN RATE RATIO BETWEEN 4:1 AND 6:5, AS DISCONTINUOUS PHASE IN A CONTINUOUS AQUEOUS PHASE CONTAINING A SODIUM DI-(C5-C8 BRANCHED CHAIN ALKYL) SULFOSUCCINATE AS PRINCIPAL DISPERSING AGENT, AND AN EFFECTIVE AMOUNT OF A WATER-SOLUBLE NON-IONIC THERMOSETTING MELAMINE-FORMALDEHYDE CONDENSATION PRODUCT AS ANTI-BLOCKING AND RECOATING AGENT.
Claim 2
Dependent Claim
91 words
A FLUID PAPER COATING EMULSION WHICH WHEN AERATED DEVELOPS FOAM OF SHORT PERSISTENCY AND WHICH, WHEN APPLIED TO PAPER AND DRIED, YIELDS A WATER- AND GREASE-RESISTANT RECOATABLE COATING, WHICH CONSISTS ESSENTIALLY OF AN EMULSION OF A HYDROPHOBIC VINYL PAPER COATING POLYMER, SUBSTANTIALLY ETHYL ACRYLATE AND ACRYLONITRILE COPOLYMERIZED IN RATE RATIO BETWEEN 4:1 AND 6:5, AS DISCONTINUOUS PHASE IN A CONTINUOUS AQUEOUS PHASE CONTAINING A SODIUM DI-(C5-C8 BRANCHED CHAIN ALKYL) SULFOSUCCINATE AS PRINCIPAL DISPERSING AGENT, AND AN EFFECTIVE AMOUNT OF A WATER-SOLUBLE NON-IONIC THERMOSETTING MELAMINE-FORMALDEHYDE CONDENSATION PRODUCT AS ANTI-BLOCKING AND RECOATING AGENT.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |