US3889040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous coating of plastics
Assignee: Bayer AG
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Filing: 1973-05-21
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Granted: 1975-06-10
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Expires: 1993-05-21
Abstract
Abstract Process for the manufacture of a laminate comprising a substrate of an impact-resistant plastic material by coating with a second plastic material having a coefficient of static friction no more than 0.5, a modulus of elasticity between 200 and 2000 kgs/cm2, a maximum tolerated surface limiting work in the linear region of the stress-strain diagram, determined from a high-speed tear test at 10 m/sec on a test rod according to Buchmann, of less than 2500 mkp/s 1/cm2, and a speed of recovery after stressed of between 1 and 10 m/sec, comprising continuously coating the first plastic material with solutions of the second plastic material containing a cellulose ester or a silicone oil.
Inventors
- 👤 Joachim Wank
- 👤 Eckart Reese
- 👤 Josef Rohrbach
- 👤 Rolf Bruck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08J2301/00; C08J2301/08; C08J2301/14; C08J2475/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31591; Y10T428/31598; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
IN THE PROCESS FOR MANUFACTURING A LAMINATE BY COATING A SUBSTRATE OF AN IMPACT-RESISTANT FIRST PLASTIC MATERIAL WITH A SECOND P PLASTIC MATERIAL WHICH IS A POLYURETHANE OR AN UNSATURATED POLYESTER HAVING A COEFFICIENT OF STATIC FRICTION OF UP TO 0.5, A MODULUS OF ELASTICITY OF BETWEEN 200 AND 2,000 KG/CM2 A MAXIMUM TOLERATED SURFACE LIMITING WORK IN THE LINEAR REGION OF THE STRESS-STRAIN DIAGRAM, DETERMINED FROM A HIGH-SPEED TEAR TEST AT 10 M/SEC ON A TEST ROD ACCORDING TO BUCHMANN, OF LESS THAN 2,500 MKP/S . 1/CM2 AND A SPEED OF RECOVERY AFTER STRESSING OF BETWEEN 1 TO 10 M/SEC, THE IMPROVEMENT WHICH COMPRISES COATING THE FIRST PLASTIC MATERIAL WITH 30 TO 80 PERCENT BY WEIGHT SOLUTION OF SAID SECOND PLASTIC MATERIAL CONTAINING ADMIXED THEREWITH A 5 TO 40 PERCENT BY WEIGHT SOLUTION OF A CELLULOSE ESTER OR A 0.1 TO 10 PERCENT BY WEIGHT SOLUTION OF A SILICONE OIL, THE AMOUNT OF CELLULOSE ESTER SOLUTION EMPLOYED SUPPLYING 0.5 TO 5 PERCENT BY WEIGHT OF CELLULOSE ESTER AND THE AMOUNT OF SILICONE OIL SOLUTION EMPLOYED SUPPLYING 0.01 TO 2 PERCENT BY WEIGHT OF SILICONE OIL, SAID AMOUNTS BEING BASED ON THE AMOUNT OF SECOND PLASTIC MATERIAL COATED ON SAID SUBSTRATE.
Claim 2
Dependent Claim
201 words
IN THE PROCESS FOR MANUFACTURING A LAMINATE BY COATING A SUBSTRATE OF AN IMPACT-RESISTANT FIRST PLASTIC MATERIAL WITH A SECOND P PLASTIC MATERIAL WHICH IS A POLYURETHANE OR AN UNSATURATED POLYESTER HAVING A COEFFICIENT OF STATIC FRICTION OF UP TO 0.5, A MODULUS OF ELASTICITY OF BETWEEN 200 AND 2,000 KG/CM2 A MAXIMUM TOLERATED SURFACE LIMITING WORK IN THE LINEAR REGION OF THE STRESS-STRAIN DIAGRAM, DETERMINED FROM A HIGH-SPEED TEAR TEST AT 10 M/SEC ON A TEST ROD ACCORDING TO BUCHMANN, OF LESS THAN 2,500 MKP/S . 1/CM2 AND A SPEED OF RECOVERY AFTER STRESSING OF BETWEEN 1 TO 10 M/SEC, THE IMPROVEMENT WHICH COMPRISES COATING THE FIRST PLASTIC MATERIAL WITH 30 TO 80 PERCENT BY WEIGHT SOLUTION OF SAID SECOND PLASTIC MATERIAL CONTAINING ADMIXED THEREWITH A 5 TO 40 PERCENT BY WEIGHT SOLUTION OF A CELLULOSE ESTER OR A 0.1 TO 10 PERCENT BY WEIGHT SOLUTION OF A SILICONE OIL, THE AMOUNT OF CELLULOSE ESTER SOLUTION EMPLOYED SUPPLYING 0.5 TO 5 PERCENT BY WEIGHT OF CELLULOSE ESTER AND THE AMOUNT OF SILICONE OIL SOLUTION EMPLOYED SUPPLYING 0.01 TO 2 PERCENT BY WEIGHT OF SILICONE OIL, SAID AMOUNTS BEING BASED ON THE AMOUNT OF SECOND PLASTIC MATERIAL COATED ON SAID SUBSTRATE.
References Cited (Backward Citations)
US2617748A
Cited
US2702255A
Cited
US2628923A
Cited
US2974057A
Cited
US3392183A
Cited
US3655432A
Cited
US3781251A
Cited
US3737479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |