US3853594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating paper with mixed thermoplastic and thermosetting acrylic resins and products thereof
Assignee: ROHM GmbH DT
•
Filing: 1972-07-07
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Granted: 1974-12-10
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Expires: 1992-07-07
Abstract
Abstract Methods for making glossy resin-filled paper by contacting the paper to be treated with an aqueous dispersion of a self-crosslinking resin and of a thermoplastic resin, then drying and hot calendering the treated paper. Glossy paper prepared by these methods and adaptable to use as an outer decorative layer in laminated building materials, for example.
Inventors
- 👤 H Moroff
- 👤 H Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:21
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A METHOD FOR MAKING A GLOSSY RESIN-FILLED PAPER WHICH COMPRISES CONTACTING THE PAPER TO BE TREATED WITH A FILLER-FREE RESIN DISPERSION CONSISTING ESSENTIALLY OF (1) A THERMOPLASTIC ACRYLIC RESIN AND (2) A SELF-CROSS-LINKING ACRYLIC RESIN, BOTH DISPERSED IN WATER, THE RATIO BY WEIGHT OF THERMOPLASTIC RESIN TO SELF-LINKING RESIN IN SAID DISPERSION BEING BETWEEN ABOUT 1:1 AND ABOUT 1:10, DRYING THE TREATED PAPER, AND WHEN CALENDERING THE DRIED PAPER WITH A HIGHLY POLISHED CALENDER ROLL AT A TEMPERATURE BETWEEN ABOUT 120*C. AND ABOUT 180*C.
Claim 2
Independent Claim
84 words
A METHOD FOR MAKING A GLOSSY RESIN-FILLED PAPER WHICH COMPRISES CONTACTING THE PAPER TO BE TREATED WITH A FILLER-FREE RESIN DISPERSION CONSISTING ESSENTIALLY OF (1) A THERMOPLASTIC ACRYLIC RESIN AND (2) A SELF-CROSS-LINKING ACRYLIC RESIN, BOTH DISPERSED IN WATER, THE RATIO BY WEIGHT OF THERMOPLASTIC RESIN TO SELF-LINKING RESIN IN SAID DISPERSION BEING BETWEEN ABOUT 1:1 AND ABOUT 1:10, DRYING THE TREATED PAPER, AND WHEN CALENDERING THE DRIED PAPER WITH A HIGHLY POLISHED CALENDER ROLL AT A TEMPERATURE BETWEEN ABOUT 120*C. AND ABOUT 180*C.
Claim 3
Dependent Claim
25 words
A method as in claim 1 wherein said paper to be treated and said resin dispersion are contacted by immersing the paper in the dispersion.
Claim 4
Dependent Claim
35 words
A method as in claim 1 wherein said paper to be treated is at least partially resin-filled prior to contacting with said resin dispersion by applying a layer of said dispersion to the surface thereof.
Claim 5
Dependent Claim
34 words
A method as in claim 1 wherein said thermoplastic resin has a T max between about 0*C. and about 30*C., and said self-cross-linking resin has a T max between about 35*C. and about 60*C.
Claim 6
Dependent Claim
95 words
A method as in claim 1 wherein said dispersed thermoplastic acrylic resin (1) is a copolymer comprising more than 50 percent by weight of at least one lower alkyl ester of acrylic acid or methacrylic acid and from 0.1 to 3 percent by weight of acrylic, methacrylic, maleic, fumaric, and itaconic acid, and said self-cross-linking acrylic resin (2) is a copolymer comprising more than 50 percent by weight of at least one lower alkyl ester of acrylic acid or methacrylic acid and from 0.5 to 10 percent by weight of N-methylol acrylamide and N-methylol methacrylamide.
Claim 7
Dependent Claim
29 words
A method as in claim 1 wherein said dispersion additionally comprises an aminoplast resin in an amount of to about 15 percent by weight of the total dispersed solids.
Claim 8
Dependent Claim
48 words
A method as in claim 2 which additionally comprises impregnating said paper to be treated with a polycationic compound prior to contacting it with said dispersion by immersing the paper in the dispersion, and wherein at least one of said dispersed thermoplastic and self-cross-linking resins is anionically dispersed.
Claim 9
Dependent Claim
23 words
A method as in claim 2 wherein said paper to be treated is substantially resin-free prior to immersing it in said resin dispersion.
Claim 10
Dependent Claim
10 words
A glossy resin-filled paper prepared by the method of claim
References Cited (Backward Citations)
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |