US4600647A
Expired / Lapsed
US
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Ultraviolet light stabilized polyarylate containing article
Assignee: SKF Nova AB
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Filing: 1984-09-26
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Granted: 1986-07-15
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Expires: 2004-09-26
Abstract
Abstract Described are ultraviolet light stabilized polyarylate containing articles comprising an article made from a polyarylate coated with a solution of (a) a substituted benzotriazole and a polymer or (b) a substituted benzotriazole.
Inventors
- 👤 Lloyd M. Robeson
- 👤 Claiborn L. Osborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:12
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08J7/0427; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31652; Y10T428/31667; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
31 words
An ultraviolet light stabilized polyarylate containing article comprising an article made from a polyarylate coated with a solution of: (a) a substituted benzotriazole and a polymer, or (b) a substituted benzotrizole.
Claim 2
Dependent Claim
31 words
An ultraviolet light stabilized polyarylate containing article comprising an article made from a polyarylate coated with a solution of: (a) a substituted benzotriazole and a polymer, or (b) a substituted benzotrizole.
Claim 3
Dependent Claim
23 words
An article as defined in claim 1 wherein the polyarylate is derived from a dihydric phenol and at least one aromatic dicarboxylic acid.
Claim 4
Dependent Claim
91 words
An article as defined in claim 2 wherein the dihydric phenol is of the following formula: ##STR12## wherein Y is selected from, hydrogen, alkyl groups of 1 to 4 carbon atoms, chlorine or bromine, each z, independently, has a value of from 1 to 4, inclusive, and R 1 is a divalent saturated or unsaturated aliphatic hydrocarbon radical, particularly an alkylene or alkylidene radical having from 1 to 6 carbon atoms, or a cycloalkylidene or cycloalkylene radicals having up to and including 9 carbon atoms, O, SO 2 , or S.
Claim 5
Dependent Claim
20 words
An article as defined in claim 2 wherein the aromatic dicarboxylic acid is isophthalic or terephthalic acids, or mixtures thereof.
Claim 6
Dependent Claim
53 words
An article as defined in claim 1 wherein the substituted benzotriazole is of the following formula: ##STR13## wherein R is NH 2 , OH, and C 1 to C 12 alkyl and R 1 and R 2 , R 3 are independently hydrogen, C 1 to C 12 alkyl or alkoxy, and halogen.
Claim 7
Dependent Claim
16 words
An article as defined in claim 5 wherein the benzotriazole is of the following formula: ##STR14##
Claim 8
Dependent Claim
16 words
An article as defined in claim 5 wherein the benzotriazole is of the following formula: ##STR15##
Claim 9
Dependent Claim
16 words
An article as defined in claim 5 wherein the benzotriazole is of the following formula: ##STR16##
Claim 10
Dependent Claim
31 words
An article as defined in claim 1 wherein the polymer is selected from one or more of the following thermoplastic polymers: aromatic polycarbonates, polyesters, polyarylates, polyurethanes, and an alkyl acrylate resin.
Claim 11
Dependent Claim
19 words
An article as defined in claim 1 wherein the polymer is a thermosetting polymer selected from polyesters or epoxides.
Claim 12
Dependent Claim
19 words
An article as defined in claim 1 wherein the polymer is an inorganic polymer based on a silane precursor.
Claim 13
Dependent Claim
13 words
An article as defined in claim 1 wherein the polyarylate contains a polyester.
Claim 14
Dependent Claim
13 words
An article as defined in claim 1 wherein the polyarylate contains a polycarbonate.
Claim 15
Dependent Claim
13 words
An article as defined in claim 12 wherein the polyester is poly(ethylene terephthalate).
Claim 16
Dependent Claim
13 words
An article as defined in claim 1 wherein the polyarylate is a poly(arylate-carbonate).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |