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US3661735A
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Shaped articles having improved surface properties and corona discharge methods and apparatus for making the same
Assignee: Johnson and Johnson
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Filing: 1969-10-14
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Granted: 1972-05-09
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Expires: 1989-10-14
Abstract
Abstract Films, sheets, expanded or foamed products, fibrous webs, and similar synthetic, organic, polymeric shaped articles and structures having surfaces with improved bonding and adhesion capabilities, increased fluid absorbency rates, and enhanced fluid wicking properties; and processes and apparatus for obtaining such improved capabilities and enhanced surface properties and characteristics by exposing said shaped articles to the action of an electrical corona discharge in an atmosphere of a reactive gas which does not have an affinity for electrons and which is also capable of acting as a chemical reducing agent, such as carbon monoxide, for example.
Inventors
- 👤 Arthur H Drelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; B29; B29C; B29C59/00; B29C59/10; B29C59/12; B01J2219/00; B01J2219/08; B01J2219/0803; B01J2219/0805; B01J2219/0845; B01J2219/0849
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
A process as defined in claim 1 wherein the synthetic, organic, polymeric shaped article is subjected to a pretreatment in a relatively inert, non-reactive gaseous atmosphere, whereby the boundary layer of air and atmospheric environmental materials is removed therefrom.
Claim 2
Dependent Claim
54 words
A process as defined in claim 1 wherein the synthetic organic, polymeric shaped article is subjected to a post-treatment in an atmosphere containing carbon monoxide whereby the reaction which started in the atmosphere of carbon monoxide and in the presence of an electrical corona discharge continues in the absence of an electrical corona discharge.
Claim 3
Dependent Claim
54 words
A process as defined in claim 1 wherein the synthetic, organic, polymeric shaped article is subjected to a pre-treatment in an atmosphere containing carbon monoxide whereby the surface of the shaped article is prepared for the reaction which starts in the atmosphere containing a reactive gas in the presence of the electrical corona discharge.
Claim 4
Dependent Claim
26 words
The product of the process defined in claim 1 wherein the surfaces of the synthetic, organic, polymeric shaped article form a reaction product with carbon monoxide.
Claim 5
Dependent Claim
10 words
A product of the process as defined in claim 4.
References Cited (Backward Citations)
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |