US3619246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of resin surfaces to improve their receptivity to coatings and the like and resin bodies with treated surfaces
Assignee: USM Corp
•
Filing: 1969-05-12
•
Granted: 1971-11-09
•
Expires: 1989-05-12
Abstract
Abstract Resin materials having low-surface energy are treated to increase their surface receptivity towards coatings and the like by providing a photosensitizer at the surface of the resin, subjecting the surface to ultraviolet radiation and applying a silane or siloxane to the surface prior to coating.
Inventors
- 👤 Robert A Bragole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/04; C08J7/043; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
The process for treating a body of polymer resin as defined in claim 1 in which residual photosensitizer is removed from the surface of the body after radiation.
Claim 2
Dependent Claim
32 words
The process of treating a body of polymer resin as defined in claim 1 in which said silane is applied to the radiated surface as a solution in a volatile organic solvent.
Claim 3
Dependent Claim
68 words
The process for treating a body of polymer resin as defined in claim 3 in which said silane is applied to the surface of said body of polymer resin as a solution containing at least about 1 percent by weight of the silane in a solvent comprising lower alkyl alcohol and containing at least about 1 percent by weight of water based on the weight of the alcohol.
Claim 4
Dependent Claim
30 words
The process for treating a body of a polymer resin as defined in claim 1 in which a coating is applied to the surface of said body carrying the silane.
Claim 5
Dependent Claim
30 words
The process for treating a body of a polymer resin as defined in claim 2 in which a coating is applied to the surface of said body carrying the silane.
Claim 6
Dependent Claim
30 words
The process for treating a body of a polymer resin as defined in claim 6 in which said silane contains an amino group and the coating includes an epoxy resin.
Claim 7
Dependent Claim
135 words
A body of polymer resin from the group consisting of polyolefins, copolymers of ethylene and propylene, copolymers of ethylene, propylene and a low percentage of a nonconjugated diene, polyvinyl fluoride, polyvinylidene fluoride, polyamides and polyesters, said resin having at lest some hydrogen on a carbon chain in a repeating unit in the polymer chain and having a surface with a low critical surface tension of wetting, said body having a surface having high receptivity or coatings through combination of an organic silicon compound with surface portions radiated with ultraviolet in the presence of a photosensitizer said organic silicon compound being a silane containing at least one member selected from the group consisting of alkoxy, aryloxy, acyloxy, amino and vinyl groups and said photosensitizer having a triplet state energy of at least about 62 K cal./mole.
Claim 8
Dependent Claim
41 words
A body of polymer resin as defined in claim 8 in which said silane was applied to the surface of said body of polymer resin as a solution of the silane in a solvent comprising a lower alkyl alcohol and water.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |