US5008148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of plastic moulded articles with improved weathering resistance
Assignee: Bayer AG
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Filing: 1989-06-12
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Granted: 1991-04-16
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Expires: 2009-06-12
Abstract
Abstract This invention relates to a process for coating moulded plastic articles of thermoplastic polycarbonates or thermoplastic polyarylene sulphides with metal oxides, to the moulded plastic articles obtainable by the process according to the invention and to their technological application for outdoor use, for example for the production of coverings or facings in the building industry.
Inventors
- 👤 Siegfried Thurm
- 👤 Reimer Holm
- 👤 Christian Leuschke
- 👤 Dietrich Rathmann
- 👤 Lutz Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:05
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/043; C08J2369/00; C08J2381/00; C08J2381/02; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
40 words
Process for coating moulded plastic articles of thermoplastic polycarbonates or thermoplastic polyarylene sulphides, characterised in that the moulded plastic articles are directly coated with metal oxides which absorb electromagnetic radiation at wave lengths of from 250 nm to 400 nm.
Claim 2
Dependent Claim
40 words
Process for coating moulded plastic articles of thermoplastic polycarbonates or thermoplastic polyarylene sulphides, characterised in that the moulded plastic articles are directly coated with metal oxides which absorb electromagnetic radiation at wave lengths of from 250 nm to 400 nm.
Claim 3
Dependent Claim
26 words
Process according to claim 1, characterised in that the moulded plastic articles are coated with metal oxides which absorb radiation from 270 nm to 400 nm.
Claim 4
Dependent Claim
11 words
Moulded plastic articles obtainable by the process according to claim 1.
Claim 5
Dependent Claim
65 words
A process for coating molded plastic articles comprising applying directly to a surface of said article a layer of metal oxide capable of absorbing electromagnetic radiation at wave lengths of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulphide and said metal oxide being selected from the group consisting of titanium dioxide, tin dioxide and zinc oxide.
Claim 6
Dependent Claim
65 words
A process for coating molded plastic articles comprising applying directly to a surface of said article a layer of metal oxide capable of absorbing electromagnetic radiation at wave lengths of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulphide and said metal oxide being selected from the group consisting of titanium dioxide, tin dioxide and zinc oxide.
Claim 7
Dependent Claim
62 words
A process for coating molded plastic articles comprising applying to a surface of said article a layer of metal oxide capable of absorbing electromagnetic radiation at wave lengths of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulphide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 8
Dependent Claim
62 words
A process for coating molded plastic articles comprising applying to a surface of said article a layer of metal oxide capable of absorbing electromagnetic radiation at wave lengths of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulphide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 9
Dependent Claim
11 words
A molded plastic article prepared by the process of claim 5.
Claim 10
Dependent Claim
79 words
A process for coating a molded plastic article comprising applying to a surface of said article a layer of non-conductive metal oxide having a thickness greater than 100 nm and smaller than 2000 nm and having the capability of absorbing electromagnetic radiation at wave length of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 11
Dependent Claim
79 words
A process for coating a molded plastic article comprising applying to a surface of said article a layer of non-conductive metal oxide having a thickness greater than 100 nm and smaller than 2000 nm and having the capability of absorbing electromagnetic radiation at wave length of from 250 nm to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 12
Dependent Claim
9 words
The article prepared by the process of claim 7.
Claim 13
Dependent Claim
54 words
A process for coating a molded article comprising applying to a surface of said article a layer of titanium dioxide having a thickness of about 440 nm and the capability of absorbing electromagnetic radiation at wave length of from 250 to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide.
Claim 14
Dependent Claim
54 words
A process for coating a molded article comprising applying to a surface of said article a layer of titanium dioxide having a thickness of about 440 nm and the capability of absorbing electromagnetic radiation at wave length of from 250 to 400 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide.
Claim 15
Dependent Claim
9 words
The article prepared by the process of claim 9.
Claim 16
Dependent Claim
71 words
A process for coating a molded plastic article comprising applying to a surface of said article a layer of non-conductive metal oxide having the capability of absorbing at least about 80% of the electromagnetic radiation at wave length of from 280 to 330 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 17
Dependent Claim
71 words
A process for coating a molded plastic article comprising applying to a surface of said article a layer of non-conductive metal oxide having the capability of absorbing at least about 80% of the electromagnetic radiation at wave length of from 280 to 330 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide and said metal oxide being selected from the group consisting of titanium dioxide and zinc oxide.
Claim 18
Dependent Claim
9 words
The article prepared by the process of claim 11.
Claim 19
Dependent Claim
55 words
A process for coating a molded plastic article comprising applying to a surface of said article a non-conductive layer of titanium dioxide having the capability of absorbing at least about 80% of the electromagnetic radiation at wave length of from 280 to 330 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide.
Claim 20
Dependent Claim
55 words
A process for coating a molded plastic article comprising applying to a surface of said article a non-conductive layer of titanium dioxide having the capability of absorbing at least about 80% of the electromagnetic radiation at wave length of from 280 to 330 nm, said article being molded from thermoplastic polycarbonate or thermoplastic polyarylene sulfide.
Claim 21
Dependent Claim
9 words
The article prepared by the process of claim 13.
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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) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |