US4111769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable pressure sensitive adhesive composition
Assignee: Union Carbide Corp
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Filing: 1977-12-29
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Granted: 1978-09-05
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Expires: 1997-12-29
Abstract
Abstract Radiation curable pressure sensitive adhesive composition comprises: a polyoxyalkylene homo- or copolymer which is either a polyxyethylene homopolymer or a poly (oxyethylene - oxypropylene) copolymer, or mixture thereof, having a molecular weight of from 1,700 to 90,000, in which at least 40 percent by weight of the oxyalkylene units are oxyethylene units; a liquid carbamyloxy alkyl acrylate; and, optionally, a photoinitiator. Also disclosed is a process of preparing such a composition and the radiation cured pressure sensitive adhesive produced therefrom.
Inventors
- 👤 Kenneth Charles Stueben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C09; C09J; C09J4/00; C09J4/06; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A radiation curable pressure sensitive adhesive composition comprising: (A) from 35 to 80 weight percent of a liquid carbamyloxy alkyl acrylate of the formula: ##STR3## wherein R and R" are each, individually, hydrogen or alkyl from 1 to 3 carbon atoms, R' is alkylene of 1 to 3 carbon atoms; (B) from 20 to 65 weight percent of a polyoxyalkylene homopolymer or copolymer which is characterized by the repeating units: ##STR4## wherein each R'" is hydrogen or methyl and a sufficient number of the R'" substituents are hydrogen that from 40 to 100 percent by weight of the oxyalkylene units in the polymer are oxyethylene units and from 60 to 0 percent by weight are oxypropylene units; and x is a number such that the molecular weight of the polyoxyalkylene homopolymer or copolymer is from 1,700 to 90,000; and (C) from 0.1 to 10 weight percent of a photoinitiator.
Claim 2
Dependent Claim
149 words
A radiation curable pressure sensitive adhesive composition comprising: (A) from 35 to 80 weight percent of a liquid carbamyloxy alkyl acrylate of the formula: ##STR3## wherein R and R" are each, individually, hydrogen or alkyl from 1 to 3 carbon atoms, R' is alkylene of 1 to 3 carbon atoms; (B) from 20 to 65 weight percent of a polyoxyalkylene homopolymer or copolymer which is characterized by the repeating units: ##STR4## wherein each R'" is hydrogen or methyl and a sufficient number of the R'" substituents are hydrogen that from 40 to 100 percent by weight of the oxyalkylene units in the polymer are oxyethylene units and from 60 to 0 percent by weight are oxypropylene units; and x is a number such that the molecular weight of the polyoxyalkylene homopolymer or copolymer is from 1,700 to 90,000; and (C) from 0.1 to 10 weight percent of a photoinitiator.
Claim 3
Dependent Claim
43 words
Radiation curable pressure sensitive adhesive composition as claimed in claim 1, wherein said component (A) is present at a concentration of from 40 to 75 weight percent and said component (B) is present at a concentration of from 25 to 60 weight percent.
Claim 4
Dependent Claim
28 words
A radiation curable pressure sensitive adhesive composition as claimed in claim 1, wherein said component (C) is present at a concentration of from 0.5 to 5 weight percent.
Claim 5
Dependent Claim
23 words
A radiation curable pressure sensitive adhesive composition as claimed in claim 1, wherein said liquid carbamyloxy alkyl acrylate is 2-(N-methyl carbamyloxy) ethyl acrylate.
Claim 6
Dependent Claim
33 words
A radiation curable pressure sensitive adhesive composition as claimed in claim 1, wherein x has a value such that the molecular weight of said polyoxyalkylene homopolymer or copolymer is from 2,500 to 21,000.
Claim 7
Dependent Claim
22 words
A radiation curable pressure sensitive adhesive composition as claimed in claim 4, wherein said polyoxyalkylene homopolymer or copolymer is a polyoxyethylene homopolymer.
Claim 8
Dependent Claim
22 words
A radiation curable pressure sensitive adhesive composition as claimed in claim 4, wherein said polyoxyalkylene homopolymer or copolymer is a poly(oxyethylene-oxypropylene) copolymer.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |