Patent US3811933A successfully refreshed from Google Patents.
US3811933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil and grease resistant paper products and process for treating cellulosic materials
Assignee: Air Products and Chemicals Inc
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Filing: 1971-12-01
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Granted: 1974-05-21
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Expires: 1991-12-01
Abstract
Abstract Functional surface coating compositions, prepared by blending a mixture of a fluorine containing polymer and a non-fluorine containing material in aqueous medium, impart solvent, grease and oil resistance to cellulosic materials.
Inventors
- 👤 M Uffner
- 👤 D Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:26
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H19/22; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
The paper or paperboard of claim 1 wherein the non-fluorine containing material is a carboxylated styrene-butadiene copolymer.
Claim 2
Dependent Claim
16 words
The paper or paperboard of claim 1 wherein the non-fluorine containing material is a hydroxyethylated starch.
Claim 3
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of undecafluorocyclohexane carbinol acrylate.
Claim 4
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of undecafluorocyclohexane carbinol methacrylate.
Claim 5
Dependent Claim
25 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of undecafluorocyclohexane carbinol acrylate and acrylic acid.
Claim 6
Dependent Claim
25 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of undecafluorocyclohexane carbinol acrylate and methacrylic acid.
Claim 7
Dependent Claim
25 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of undecafluorocyclohexane carbinol methacrylate and methacrylic acid.
Claim 8
Dependent Claim
25 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of heptafluoropropyl carbinol acrylate and acrylic acid.
Claim 9
Dependent Claim
23 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of nonadecafluoro-4-(n-butyl) cyclohexane carbinol methacrylate.
Claim 10
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of 1,1,2,2,-tetrahydroheptadecafluorononyl carbinol methacrylate.
Claim 11
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of 6-hydrododecafluorohexane carbinol acrylate.
Claim 12
Dependent Claim
26 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of heptadecafluorooctyl (N-ethyl) sulfonamido-2-ethyl acrylate and methacrylic acid.
Claim 13
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of bis-trifluoromethyl carbinol acrylate.
Claim 14
Dependent Claim
22 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of pentadecafluoroheptyl carbinol acrylate.
Claim 15
Dependent Claim
45 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a homopolymer of a fluorocarbon acrylic monomer having two to 18 carbon atoms in the alkyl, isoalkyl or cycloalkyl group and at least one perfluoroalkyl or two perfluoroalkylene groups.
Claim 16
Dependent Claim
51 words
The paper or paperboard of claim 1 wherein the fluorine-containing polymer of the coating composition is a copolymer of a fluorocarbon acrylic monomer and an alpha, betaethylenically unsaturated carboxylic acid monomer having the structure: CHR5 C(R6)COOH, where R5 is H, CH3, C6H5 or COOH and R6 is H, Ch3 or CH2COOH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |