Patent US3894975A successfully refreshed from Google Patents.
US3894975A
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US
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Adhesive paste comprising wood fibers and complex of styrene and maleic anhydride
Assignee: Champion International Corp
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Filing: 1973-03-22
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Granted: 1975-07-15
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Expires: 1993-03-22
Abstract
Abstract There is disclosed the preparation of polymer composites with porous cellulosic materials, such as wood. The process for forming such a composite involves impregnating the wood with a polymerizable complex of a monomer combination such as a complex of maleic anhydride and styrene. The polymerization is uncatalyzed - i.e., it is conducted without employing conventional means for inducing polymerization of monomers in wood, such as high-energy radiation or the thermal decomposition of a chemical free radical precursor. There is also disclosed a solid, stable complex of styrene and maleic anhydride.
Inventors
- 👤 Norman G Gaylord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:11
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08F; C08F251/00; C08F251/02; B; B27; B27K; B27K3/00; B27K3/02; B27K3/15; B27K3/156; C08L35/00; C08L35/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
22 words
AN ADHESIVE PASTE COMPRISING A MINOR AMOUNT OF WOOD FIBERS AND A MAJOR AMOUNT OF A COMPLEX OF STYRENE AND MALEIC ANHYDRIDE.
Claim 2
Dependent Claim
22 words
AN ADHESIVE PASTE COMPRISING A MINOR AMOUNT OF WOOD FIBERS AND A MAJOR AMOUNT OF A COMPLEX OF STYRENE AND MALEIC ANHYDRIDE.
Claim 3
Dependent Claim
19 words
The adhesive paste of claim 1 wherein up to 20 mole percent of the styrene is replaced with divinylbenzene.
Claim 4
Dependent Claim
21 words
The adhesive paste of claim 1 wherein up to 10 mole percent of said maleic anhydride is replaced with di-n-butyl maleate.
Claim 5
Dependent Claim
24 words
The adhesive paste of claim 1 wherein up to 20 mole percent of said styrene is replaced with vinyl isobutyl ether or vinyl acetate.
Claim 6
Dependent Claim
19 words
The adhesive paste of claim 1 wherein said complex is used in conjunction with an excess amount of styrene.
Claim 7
Dependent Claim
13 words
The adhesive paste of claim 1 wherein said complex contains a polymerization inhibitor.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein said complex contains dissolved therein a low molecular weight copolymer of styrene and maleic anhydride.
References Cited (Backward Citations)
US3085986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |