US3235426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering thermoplastic resins receptive to coatings
Assignee: EIDP Inc
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Filing: 1961-08-01
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Granted: 1966-02-15
•
Expires: 1981-08-01
Abstract
No abstract record available.
Inventors
- 👤 Bruner Walter Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:45
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/14; C08J7/08; C08J2359/00; C08J2359/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR TREATING THE SURFACE OF ARTICLES FABRICATED FROM A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYAMIDE RESIN AND ACETAL RESIN IN ORDER TO IMPROVE THE RECEPTIVITY OF SAID SURFACE TO COATINGS WHICH COMPRISES CONTACTING SAID SURFACE WITH A SOLIDS-IN-LIQUID DISPERSION AT A TEMPERATURE OF ABOUT 30* TO 200*C., SAID DISPERSION COMPRISING (1) 99.9 TO 85% BY WEIGHT OF A CONTINOUS LIQUID PHASE CONSISTING ESSENTAILLY OF A LIQUID VEHICLE AND CONTAINING APPROXIMATELY 0.1 TO 20% BY WEIGHT OF A STRONG ACIDIC ETCHING AGENT CAPABLE OF QUICKLY CORRODING SAID SURFACE AT ORDINARY TEMPERATURES AND PRESSURES, AND (2) 0.1 TO 10% BY WEIGHT OF A DISCONTINOUS SOLID PHASE CONSISTING ESSENTIALLY OF A PARTICULATE SOLID MATERIAL WHICH IS INSOLUBLE IN SAID LIQUID PHASE AND HAS A PARTICLES SIZE OF LESS THAN 40 MESH AND REMOVING SAID SURFACE FROM CONTACT WITH SAID DISPERSION.
Claim 2
Dependent Claim
142 words
A PROCESS FOR TREATING THE SURFACE OF ARTICLES FABRICATED FROM A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYAMIDE RESIN AND ACETAL RESIN IN ORDER TO IMPROVE THE RECEPTIVITY OF SAID SURFACE TO COATINGS WHICH COMPRISES CONTACTING SAID SURFACE WITH A SOLIDS-IN-LIQUID DISPERSION AT A TEMPERATURE OF ABOUT 30* TO 200*C., SAID DISPERSION COMPRISING (1) 99.9 TO 85% BY WEIGHT OF A CONTINOUS LIQUID PHASE CONSISTING ESSENTAILLY OF A LIQUID VEHICLE AND CONTAINING APPROXIMATELY 0.1 TO 20% BY WEIGHT OF A STRONG ACIDIC ETCHING AGENT CAPABLE OF QUICKLY CORRODING SAID SURFACE AT ORDINARY TEMPERATURES AND PRESSURES, AND (2) 0.1 TO 10% BY WEIGHT OF A DISCONTINOUS SOLID PHASE CONSISTING ESSENTIALLY OF A PARTICULATE SOLID MATERIAL WHICH IS INSOLUBLE IN SAID LIQUID PHASE AND HAS A PARTICLES SIZE OF LESS THAN 40 MESH AND REMOVING SAID SURFACE FROM CONTACT WITH SAID DISPERSION.
References Cited (Backward Citations)
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Cited
US2701218A
Cited
US2879177A
Cited
US2828528A
Cited
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Cited
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |