US4135033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-activated adhesive coating
Assignee: Individual
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Filing: 1977-02-16
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Granted: 1979-01-16
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Expires: 1997-02-16
Abstract
Abstract A two-layer adhesive coating having a dry, non-tacky surface convertible to a permanently adhesive surface by application of heat. A first co-reactant in an adhesive-containing base layer combines with a second co-reactant applied to the base layer to form a dry, non-tacky barrier layer comprising a molecular complex which dissociates upon heating to form a permanently adhesive surface.
Inventors
- 👤 William R. Lawton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:06
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/35; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2835; Y10T428/2839; Y10T428/2852; Y10T428/31; Y10T428/31504; Y10T428/31551; Y10T428/31623; Y10T428/31645; Y10T428/31649; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31906; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
171 words
A two-layer coating activatable to adhesiveness by heat, comprising a base layer carried adjacent a substrate and comprising a viscid material, and a dry, non-tacky barrier layer carried by said base layer externally thereof and comprising a molecular complex dissociable above a temperature in the range of from about 35° C. to about 280° C., said molecular complex being selected from the group consisting of molecular complexes of phenols listed in Table I and amines listed in Table I; molecular complexes of urea and substituted and unsubstituted normal aliphatics having at least 8 carbon atoms; molecular complexes of urea and normal unbranched olefins having at least 8 carbon atoms; molecular complexes of thiourea and substituted and unsubstituted branched aliphatics having at least 8 carbon atoms; and molecular complexes of thiourea and branched olefins having at least 8 carbon atoms, whereby upon heating said coating above a dissociation temperature in the range of from about 35° C. to about 280° C. said base and barrier layers merge to form an adhesive coating.
Claim 2
Dependent Claim
171 words
A two-layer coating activatable to adhesiveness by heat, comprising a base layer carried adjacent a substrate and comprising a viscid material, and a dry, non-tacky barrier layer carried by said base layer externally thereof and comprising a molecular complex dissociable above a temperature in the range of from about 35° C. to about 280° C., said molecular complex being selected from the group consisting of molecular complexes of phenols listed in Table I and amines listed in Table I; molecular complexes of urea and substituted and unsubstituted normal aliphatics having at least 8 carbon atoms; molecular complexes of urea and normal unbranched olefins having at least 8 carbon atoms; molecular complexes of thiourea and substituted and unsubstituted branched aliphatics having at least 8 carbon atoms; and molecular complexes of thiourea and branched olefins having at least 8 carbon atoms, whereby upon heating said coating above a dissociation temperature in the range of from about 35° C. to about 280° C. said base and barrier layers merge to form an adhesive coating.
Claim 3
Dependent Claim
17 words
The coating of claim 1, wherein said viscid material in the base layer comprises a pressure-sensitive adhesive.
Claim 4
Dependent Claim
32 words
The coating of claim 1, wherein said molecular complex in the barrier layer is formed by reaction of a first co-reactant in the base layer with a second co-reactant applied externally thereto.
Claim 5
Dependent Claim
24 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a phenol and the other is an amine.
Claim 6
Dependent Claim
33 words
The coating of claim 4, wherein one of said first co-reactant and said second co-reactant is a phenol selected from Table I and the other is a corresponding amine selected from Table I.
Claim 7
Dependent Claim
43 words
The coating of claim 5, wherein said base layer further comprises a third co-reactant adapted to lower the dissociation temperature of said molecular complex, said third co-reactant being selected from the group consisting of benzil, hydroquinone-monomethylether, p-hydroxyacetophenone, 4-methoxybenzil, t.butylhydroquinone, 1,5-diphenylpentenedione, and dehydroacetic acid.
Claim 8
Dependent Claim
47 words
The coating of claim 5, wherein said base layer further comprises a third co-reactant adapted to lower the dissociation temperature of said molecular complex, said third co-reactant being selected from the group consisting of 1,5-diphenyl-3-pentenedione; benzophenone; 2,3,4-trihydroxydecaphenone; 4,4'-dimethylbenzophenone; dehydroacetic acid; benzil; 4-methoxybenzil; ethyl-p-hydroxybenzoate; resorcinol monobenzoate; and p-bromoacetophenone.
Claim 9
Dependent Claim
40 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a compound selected from the group consisting of substituted and unsubstituted normal aliphatics having at least 8 carbon atoms, and the other is urea.
Claim 10
Dependent Claim
39 words
The coating of claim 8, wherein said base layer further comprises a third co-reactant adapted to lower the dissociation temperature of said molecular complex, said third co-reactant being selected from the group consisting of dehydroacetic acid and glycollic acid.
Claim 11
Dependent Claim
31 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a normal unbranched olefin having at least 8 carbon atoms, and the other is urea.
Claim 12
Dependent Claim
40 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a compound selected from the group consisting of substituted and unsubstituted branched aliphatics having at least 8 carbon atoms, and the other is thiourea.
Claim 13
Dependent Claim
30 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a branched olefin having at least 8 carbon atoms, and the other is thiourea.
Claim 14
Dependent Claim
35 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is 4,4'-isopropylidenebis (6-t.butyl-m-cresol) and the other is a compound selected from the group consisting of dibenzylamine, hexamethyleneamine, benzyldimethylamine, and triisopropanolamine.
Claim 15
Dependent Claim
31 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is compound selected from the group consisting of hydroquinone and pyrogallol and the other is hexamethyleneamine.
Claim 16
Dependent Claim
58 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is a compound selected from the group consisting of fatty amines having at least 8 carbon atoms, lauric acid, fatty acid amines having at least 8 carbon atoms, octanoic acid, oleic acid, dehydrogenated tallow amine, oleonitrile, and n-octyl-n-decyladipate, and the other is urea.
Claim 17
Dependent Claim
41 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is 4,4'butylidenebis (6-tert-butyl-m-cresol), and the other is a compound selected from the group consisting of N-phenylbenzylamine, hexamethylene amine, N-phenylmorpholine, N-phenylnaphthylamine, tribenzylamine, benzyldimethylamine, phenyldiethanolamine, and the triisopropanolamine.
Claim 18
Dependent Claim
23 words
The coating of claim 3, wherein one of said first co-reactant and said second co-reactant is 2,2'-methylenebis (3,4,6-trichlorophenol) and the other is benzyldimethylamine.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |