US4283462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic laminates with furan resin coating
Assignee: CHIMIQUES DES CHARBONNAGES TOUR AURORE- CEDEX 05 92080 PARIS LA DEFENSE FRANCE Ste
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Filing: 1980-01-24
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Granted: 1981-08-11
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Expires: 2000-01-24
Abstract
Abstract In reinforced phenolic resin laminates coated with a surface layer on at least one side, the improvement wherein said surface layer consists essentially of a furan resin coating which is directly bonded to the reinforced phenolic resin laminate, thereby removing surface irregularities in the resultant laminate.
Inventors
- 👤 Nicolas Meyer
- 👤 Leon Schuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:29
CPC Classifications
C; C08; C08J; C08J5/00; B; B29; B29C; B29C37/00; B29C37/0025; B29C37/0028; B29C37/0032; B29C70/00; B29C70/003; C08J5/04; C08J5/0405; C08J5/043; B29C2037/0035; B29C2791/00; B29C2791/001; B29C70/04; B29C70/28; B29C70/30; B29K; B29K2061/00; B29K2071/00; B29K2105/00; B29K2105/06; B29K2105/24; B29K2105/243; C08J2361/00; C08J2361/04; C08J2361/06; C08J2361/08; C08J2361/10; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31877; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
A process for producing a reinforced phenolic resin laminate coated with a surface layer on at least one side, said surface layer consisting essentially of a furan resin coating which is directly bonded to the reinforced phenolic resin laminate, comprising depositing said coating of furan resin on a mold, then after at least a beginning of hardening, depositing alternate layers of phenolic resin and reinforcing agent, hardening the laminate, and then withdrawing resultant laminate from the mold, said laminate having no surface irregularities due to pitting or fiber projection.
Claim 2
Dependent Claim
89 words
A process for producing a reinforced phenolic resin laminate coated with a surface layer on at least one side, said surface layer consisting essentially of a furan resin coating which is directly bonded to the reinforced phenolic resin laminate, comprising depositing said coating of furan resin on a mold, then after at least a beginning of hardening, depositing alternate layers of phenolic resin and reinforcing agent, hardening the laminate, and then withdrawing resultant laminate from the mold, said laminate having no surface irregularities due to pitting or fiber projection.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein the furan resin is substantially hardened prior to said depositing of alternate layers.
Claim 4
Dependent Claim
21 words
A process according to claim 1, wherein the furan resin is hardened by using an aqueous concentrated solution of paratoluenesulfonic acid.
Claim 5
Dependent Claim
29 words
A process according to claim 1, wherein the phenolic resin is obtained by condensing formol and phenol in the presence of a basic agent, and it contains a plasticizer.
Claim 6
Dependent Claim
15 words
A process according to claim 7, wherein the thermosetting resin is an unsaturated polyester resin.
Claim 7
Dependent Claim
12 words
A process according to claim 7, wherein the thermosetting resin is pigmented.
Claim 8
Dependent Claim
60 words
A process according to claim 1, said furan resin coating being directly bonded on the obverse side with a thermosetting coating, and wherein the process comprises the preceding step of depositing a first layer of said thermosetting resin on the mold as the first layer, and hardening the first layer at least in part prior to depositing the furan layer.
Claim 9
Dependent Claim
20 words
A process according to claim 7, wherein the furan resin is substantially hardened prior to said depositing of alternate layers.
Claim 10
Dependent Claim
7 words
A laminate produced according to claim 1.
Claim 11
Dependent Claim
7 words
A laminate produced according to claim 2.
Claim 12
Dependent Claim
7 words
A laminate produced according to claim 7.
Claim 13
Dependent Claim
7 words
A laminate produced according to claim 5.
Claim 14
Dependent Claim
7 words
A laminate produced according to claim 8.
References Cited (Backward Citations)
US3094453A
Cited
US3416990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |