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US4771078A
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Method of producing a foam from a radiation-curable composition
Assignee: P T Sub Inc
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Filing: 1985-11-12
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Granted: 1988-09-13
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Expires: 2005-11-12
Abstract
Abstract This invention relates to a process of producing a cured foamed polymer by mechanically frothing a radiation-curable composition and curing the frothed composition with radiation and using such foams in graphic art devices such as compressible printing blankets. It also relates to uses of unfoamed radiation-cured polymer in graphic art devices.
Inventors
- 👤 Robert C. Schisler
- 👤 Raymond E. Downey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:45
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B27/00; B32B27/06; B32B27/065; B32B38/00; B32B38/0008; B32B5/22; B32B5/24; B32B5/245; B41; B41N; B41N10/00; B41N10/02; B41N10/04; C; C08; C08J; C08J3/00; C08J3/28; C08J9/00; C08J9/30; B41N2210/00; B41N2210/02; B41N2210/04; B41N2210/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24512; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249987
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
A process for producing a cured foamed polymeric composition consisting essentially of closed cells comprising: (a) mechanically frothing a radiation-curable composition to produce a froth consisting essentially of closed cells and (b) curing the frothed composition with radiation.
Claim 2
Dependent Claim
38 words
A process for producing a cured foamed polymeric composition consisting essentially of closed cells comprising: (a) mechanically frothing a radiation-curable composition to produce a froth consisting essentially of closed cells and (b) curing the frothed composition with radiation.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the curing is accomplished solely by actinic radiation.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the radiation curable composition is comprised of an oligomer.
Claim 5
Dependent Claim
13 words
The process according to claim 3 wherein the type of radiation is actinic.
Claim 6
Dependent Claim
16 words
The process according to claim 4 wherein the radiation curable composition further comprises a reactive diluent.
Claim 7
Dependent Claim
46 words
The process according to claim 5 wherein the reactive diluent is selected from the group consisting of butyl acrylate, isodecyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, 2-ethylhexyl acrylate, vinyl acetate, N-vinyl pyrrolidone, 2-phenoxy acrylate, caprolactone acrylate, tetrahydrofurfuryl methacrylate, cyclohexyl methacrylate and glycidyl methacrylate.
Claim 8
Dependent Claim
22 words
The process according to claim 6 wherein the liquid radiation curable composition contains a photoinitiator and/or photosensitizer, a plasticizer and a surfactant.
References Cited (Backward Citations)
GB304112A
Cited
US3326787A
Cited
US3700574A
Cited
US3778294A
Cited
US3535193A
Cited
US3891523A
Cited
US3715293A
Cited
US3940349A
Cited
US4038350A
Cited
US4112017A
Cited
US4250005A
Cited
US4378278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |