Patent US3836604A successfully refreshed from Google Patents.
US3836604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binders for the electrostatic powder-spraying process
Assignee: Bayer AG
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Filing: 1972-05-31
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Granted: 1974-09-17
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Expires: 1992-05-31
Abstract
Abstract COPOLYMERS OF 25 TO 60% BY WEIGHT OF STYRENE OR ITS DERIVATIVES, 30 TO 65% OF (METH) ACRYLIC ESTERS (EXCEPTED (METHACRYLIC ACID MTHYL ESTER) WHICH MAY BE USED IN AMOUNTS UP TO 24% BY WEIGHT) AND 3 TO 15% BY WEIGHT OF UNSATURATED COPOLYMERIZABLE CARBOXYLIC ACIDS ARE HOMEGENEOUSLY MIXED WITH TRIGLYCIDYL ISOCYANURATE AND OPTIONALLY WITH PIGMENTS AND LEVELLING AGENTS. THE MIXTURE IS APPLIED BY ELECTTROSTATIC POWDER-SPRAYING PROCESS TO METALLIC SURFACES AND CURED AT TEMPERATURES OF ABOUT 130 TO 220* C. THE BACKED FILMS OF THE MIXTURES SHOW OUTSTANDIING BOND STRENGTH AND HARDNESS COUPLED WITH ELASTICITY, HIGH GLOSS AND WEATHER RESISTNACE.
Inventors
- 👤 D Pollheide
- 👤 H Hegemann
- 👤 F Wingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C08; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/20; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10S524/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |