Patent US4543290A successfully refreshed from Google Patents.
US4543290A
Expired / Lapsed
US
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Chemical resistant decorative laminates
Assignee: General Electric Co
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Filing: 1984-01-26
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Granted: 1985-09-24
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Expires: 2004-01-26
Abstract
Abstract A resin impregnated and coated, fibrous, chemical resistant decorative laminate is made, having a bottom portion impregnated with phenolic resin, a top portion impregnated and coated with vinyl ester terminated bisphenol A epoxy resin, and a middle portion impregnated with aminotriazine-aldehyde resin which acts as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin.
Inventors
- 👤 Lenon G. Brooker
- 👤 Donald L. Jarrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:05
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/005; B32B27/00; B32B27/04; B32B38/00; B32B38/0004; B32B38/16; D; D21; D21H; D21H27/00; D21H27/18; D21H27/22; D21H27/26; D21H27/28; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/40; B32B2307/402; B32B2307/4026; B32B2307/50; B32B2307/554; B32B2307/70; B32B2307/71; B32B2307/714; B32B2309/00; B32B2309/02; B32B2451/00; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; D21H17/52; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31511; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/31866; Y10T428/31877
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
97 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant laminate, said laminate comprising a plurality of cellulosic sheets and having a bottom portion impregnated with phenol-aldehyde resin, a top portion impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, and a middle portion impregnated with aminotriazine-aldehyde resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin.
Claim 2
Dependent Claim
97 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant laminate, said laminate comprising a plurality of cellulosic sheets and having a bottom portion impregnated with phenol-aldehyde resin, a top portion impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, and a middle portion impregnated with aminotriazine-aldehyde resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin.
Claim 3
Dependent Claim
36 words
The chemical resistance laminate of claim 1, where the vinyl ester terminated bisphenol A epoxy resin is applied as a solution having a viscosity of between about 400 cps. and about 800 cps. at 25° C.
Claim 4
Dependent Claim
63 words
The chemical resistant laminate of claim 1, where the aminotriazine-aldehyde resin is a melamine-formaldehyde resin, the phenol-aldehyde resin is a phenol-formaldehyde resin, the vinyl ester terminated bisphenol A epoxy resin has up to about 2%, based on vinyl esther terminated bisphenol A epoxy solids, of a thixotroping agent, and the vinyl ester terminated bisphenol A epoxy resin mixes with the melamine formaldehyde resin.
Claim 5
Dependent Claim
158 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising: A. a bottom core portion impregnated with phenol-aldehyde resin, and B. a top decorative portion impregnated and coated with resin, where the part of the decorative portion facing the core is impregnated with aminotriazine-aldehyde resin and the top part of the decorative portion is impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin, and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR3## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Claim 6
Dependent Claim
158 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising: A. a bottom core portion impregnated with phenol-aldehyde resin, and B. a top decorative portion impregnated and coated with resin, where the part of the decorative portion facing the core is impregnated with aminotriazine-aldehyde resin and the top part of the decorative portion is impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin, and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR3## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Claim 7
Dependent Claim
29 words
The chemical resistant laminate of claim 4, where the vinyl ester terminated bisphenol A epoxy resin impregnates into the top of the decorative portion, mixing with the aminotriazine-aldehyde resin.
Claim 8
Dependent Claim
36 words
The chemical resistant laminate of claim 4, where the vinyl ester terminated bisphenol A epoxy resin is applied as a solution having a viscosity of between about 400 cps. and about 800 cps. at 25° C.
Claim 9
Dependent Claim
49 words
The chemical resistant laminate of claim 4, where the aminotriazine-aldehyde resin is a melamine-formaldehyde resin, the phenol-aldehyde resin is a phenol-formaldehyde resin, and the vinyl ester terminated bisphenol A epoxy resin has up to about 2%, based on vinyl esther terminated bisphenol A epoxy solids, of a thixotropic agent.
Claim 10
Dependent Claim
40 words
The chemical resistant laminate of claim 4, where a fibrous barrier layer impregnated with aminotriazine-aldehyde resin is disposed between the core and the decorative portion, where the barrier layer has a resin content of at least about 30 weight percent.
Claim 11
Dependent Claim
30 words
The chemical resistant laminate of claim 4, where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR4## where n is from about 1 to about 3.
Claim 12
Dependent Claim
41 words
The chemical resistant laminate of claim 1, where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR5## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Claim 13
Dependent Claim
30 words
The chemical resistant laminate of claim 1, where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR6## where n is from about 1 to about 3.
Claim 14
Dependent Claim
132 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising: A. a bottom core layer impregnated with phenol-aldehyde resin, B. a middle layer impregnated with aminotriazine-aldehyde resin, and C. a top protective overlay layer impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where, the aminotriazine-aldehyde resin in the middle layer functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR7## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Claim 15
Dependent Claim
132 words
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising: A. a bottom core layer impregnated with phenol-aldehyde resin, B. a middle layer impregnated with aminotriazine-aldehyde resin, and C. a top protective overlay layer impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where, the aminotriazine-aldehyde resin in the middle layer functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR7## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Claim 16
Dependent Claim
40 words
The chemical resistant laminate of claim 12, where the top overlay layer is initially impregnated with aminotriazine-aldehyde resin, the vinyl ester terminated bisphenol A epoxy resin impregnates into the top portion of the overlay layer, mixing with the aminotriazine-aldehyde resin.
Claim 17
Dependent Claim
46 words
The chemical resistant laminate of claim 12, where the vinyl ester terminated bisphenol A epoxy resin is applied as a solution having a viscosity of between about 400 cps. and about 800 cps. at 25° C., and the middle layer is a decorative patterned print layer.
Claim 18
Dependent Claim
49 words
The chemical resistant laminate of claim 12, where the aminotriazine-aldehyde resin is a melamine-formaldehyde resin, the phenol-aldehyde resin is a phenol-formaldehyde resin, and the vinyl ester terminated bisphenol A epoxy resin has up to about 2%, based on vinyl esther terminated bisphenol A epoxy solids, of a thixotropic agent.
Claim 19
Dependent Claim
30 words
The chemical resistant laminate of claim 12, where the vinyl ester terminated bisphenol A epoxy resin has the structural formula: ##STR8## where n is from about 1 to about 3.
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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |