US6476158B1
Expired / Lapsed
US
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Process for colored polycarbonate-polyester compositions with improved weathering
Assignee: SABIC Global Technologies BV
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Filing: 2000-05-16
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Granted: 2002-11-05
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Expires: 2020-05-16
Abstract
Abstract A process for preparing a high gloss retention resin molding formulation comprising a polyester resin and a polycarbonate resin where the process comprises the steps of selecting a desirable colorant which is stable at molding temperatures and has desirable color retention properties when subjected to weathering, determining an optimized concentration of the colorant for maximizing gloss retention properties of the selected colorant by performing weathering test at differing concentrations of the colorant, and optionally determining a suitable gloss enhancing.
Inventors
- 👤 William P. England
- 👤 Robert Russell Gallucci
- 👤 Paul Joseph Hans
- 👤 Patricia A. Hubbard
- 👤 David Whalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:43
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L69/00; C08L51/00; C08L51/04; C08L67/03; C08L69/005
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
127 words
A process for preparing a high gloss retention resin molding composition, comprising: blending a polyester resin; a resin polycarbonate; a resin selected from the group consisting of polyarylate, polyester-carbonate, and mixtures thereof, wherein the composition has a polyester-carbonate to polycarbonate weight ratio or a polyarylate to polycarbonate ratio of 90:10 to 10:90; and at least one synthetic colorant wherein the synthetic colorant is stable at molding temperatures and does not contain primary amino, sulfonic acid, or alkali metal carboxylate functionality, wherein the composition has an initial 60° gloss value measured according to ASTM D523 of greater than or equal to 80%; and wherein the composition has greater than or equal to 50% retention of initial gloss after 1000 hours weathering under ASTM G26 or SAE J1960 conditions.
Claim 2
Dependent Claim
127 words
A process for preparing a high gloss retention resin molding composition, comprising: blending a polyester resin; a resin polycarbonate; a resin selected from the group consisting of polyarylate, polyester-carbonate, and mixtures thereof, wherein the composition has a polyester-carbonate to polycarbonate weight ratio or a polyarylate to polycarbonate ratio of 90:10 to 10:90; and at least one synthetic colorant wherein the synthetic colorant is stable at molding temperatures and does not contain primary amino, sulfonic acid, or alkali metal carboxylate functionality, wherein the composition has an initial 60° gloss value measured according to ASTM D523 of greater than or equal to 80%; and wherein the composition has greater than or equal to 50% retention of initial gloss after 1000 hours weathering under ASTM G26 or SAE J1960 conditions.
Claim 3
Dependent Claim
15 words
The process according to claim 1 wherein the composition further comprises a gloss retention agent.
Claim 4
Dependent Claim
11 words
The composition of claim 1 , further comprising an impact modifier.
Claim 5
Dependent Claim
28 words
The process according to claim 1 wherein the polycarbonate, polyarylate, and polyester-carbonate resins comprise units derived from the group consisting of bisphenol A, isophthalic acid, and terephthalic acid.
Claim 6
Dependent Claim
28 words
The process according to claim 1 wherein the polyester is selected from the group consisting of poly(ethylene terephthalate) “PET”, poly(1,4-butylene terephthalate) “PBT”, (polypropylene terephthalate) “PPT”, and mixtures thereof.
Claim 7
Dependent Claim
22 words
The process according to claim 1 wherein the composition comprises a mixture of the aromatic polyester-carbonate, the polyarylate, and the polycarbonate resin.
Claim 8
Dependent Claim
16 words
The process according to claim 2 wherein the gloss retention agent comprises a benzotriazole UV stabilizer.
Claim 9
Dependent Claim
15 words
The process according to claim 1 wherein the composition is substantially free from inorganic particles.
Claim 10
Dependent Claim
35 words
The process according to claim 3 wherein the impact modifier is selected from the group consisting of: methacrylate butadiene rubber, acrylic rubber and polyolefin copolymers containing acrylic, methacrylic, vinyl ester or vinyl ether derived units.
Claim 11
Dependent Claim
16 words
The process of claim 9 wherein the impact modifier comprises a polyolefin copolymer containing epoxide functionality.
Claim 12
Dependent Claim
23 words
The process of claim 10 wherein the impact modifier comprises a polyolefin copolymer wherein the epoxide functionality is derived from a glycidyl ester.
Claim 13
Dependent Claim
20 words
The process according to claim 1 wherein the synthetic colorant is colorfast under sunlight and is stable at >200° C.
Claim 14
Dependent Claim
110 words
The process according to claim 1 wherein the synthetic colorant is selected from the group consisting of solvent green 3, solvent green 28, solvent red 52, solvent red 111, solvent red 135, solvent red 169, solvent red 179, solvent red 207, disperse red 22, vat red 41, solvent orange 60, solvent orange 63, solvent violet 13, solvent violet 14, solvent violet 36, solvent violet 50, pigment blue 29, amino ketone black, disperse blue 73, solvent blue 97, solvent blue 101, solvent blue 104, solvent blue 138, pigment yellow 139, disperse yellow 160, solvent yellow 84, solvent yellow 93, solvent yellow 98, solvent yellow 163, solvent yellow 160:1, and mixtures thereof.
Claim 15
Dependent Claim
46 words
The process of claim 13 wherein the synthetic colorant is selected from the group consisting of solvent red 135, solvent red 179, amino ketone black, solvent violet 14, solvent violet 36, solvent violet 50, disperse blue 73, solvent yellow 93, disperse yellow 160, and mixtures thereof.
Claim 16
Dependent Claim
41 words
The process of claim 1 wherein the composition has greater than or equal to 50% retention of initial gloss after 5000 hours weathering under ASTM G26 or SAE J1960 conditions wherein the initial gloss was greater than or equal to 80%.
Claim 17
Dependent Claim
41 words
The process of claim 1 wherein the composition has greater than or equal to 50% retention of initial gloss after 3000 hours weathering under ASTM G26 or SAE J1960 conditions wherein the initial gloss was greater than or equal to 80%.
Claim 18
Dependent Claim
11 words
A weatherable polyester composition made by process of claim 1 .
Claim 19
Dependent Claim
34 words
A weatherable polyester composition made by the process of claim 1 with an initial gloss of ≧80% which retains ≧50% retention of initial gloss after 5000 hours of ASTM G26 or SAE J1960 conditions.
Claim 20
Dependent Claim
34 words
A weatherable polyester composition made by the process of claim 1 with an initial gloss of ≧80% which retains ≧50% retention of initial gloss after 3000 hours of ASTM G26 or SAE J1960 conditions.
Claim 21
Dependent Claim
34 words
A weatherable polyester composition made by the process of claim 1 with an initial gloss of ≧80% which retains ≧50% retention of initial gloss after 1000 hours of ASTM G26 or SAE J1960 conditions.
Claim 22
Dependent Claim
18 words
The process according to claim 1 wherein the synthetic colorant is stable to at least about 275° C.
Claim 23
Dependent Claim
16 words
The process according to claim 3 wherein the impact modifier comprises an ethylene-alkyl methacrylate-glycidyl methacrylate terpolymer.
Claim 24
Dependent Claim
107 words
The process according to claim 1 wherein the synthetic colorant is selected from the group consisting of solvent green 3, solvent green 28, solvent red 52, solvent red 111, solvent red 135, solvent red 169, solvent red 179, solvent red 207, disperse red 22, vat red 41, solvent orange 60, solvent orange 63, solvent violet 14, solvent violet 36, solvent violet 50, pigment blue 29, amino ketone black, disperse blue 73, solvent blue 97, solvent blue 101, solvent blue 104, solvent blue 138, pigment yellow 139, disperse yellow 160, solvent yellow 84, solvent yellow 93, solvent yellow 98, solvent yellow 163, solvent yellow 160:1, and mixtures thereof.
Claim 25
Dependent Claim
47 words
The process according to claim 1 wherein the synthetic colorant is selected from the group consisting of solvent green 3, solvent red 135, solvent red 179, pigment red 101, solvent orange 60, solvent violet 13, solvent violet 36, solvent blue 97, solvent yellow 93, and mixtures thereof.
Claim 26
Dependent Claim
19 words
The process according to claim 1 wherein the composition further comprises titanium dioxide, carbon black, or a mixture thereof.
Claim 27
Dependent Claim
129 words
A process for preparing a high gloss retention resin molding composition comprising: blending a polyester resin, a polycarbonate resin, a polyarylate resin, and at least one synthetic colorant, wherein the resin blend comprises from 10 to 90 weight percent of polyester resin and from 10 to 90 weight percent of polycarbonate resin or polyarylate resin or their mixture thereof, and wherein the synthetic colorant is stable at molding temperatures and does not contain primary amino, sulfonic acid, or alkali metal carboxylate functionality; wherein the composition has an initial 60° gloss value measured according to ASTM D523 of greater than or equal to 80%; and wherein the composition has greater than or equal to 50% retention of initial gloss after 1000 hours weathering under ASTM G26 or SAE J1960 conditions.
Claim 28
Dependent Claim
129 words
A process for preparing a high gloss retention resin molding composition comprising: blending a polyester resin, a polycarbonate resin, a polyarylate resin, and at least one synthetic colorant, wherein the resin blend comprises from 10 to 90 weight percent of polyester resin and from 10 to 90 weight percent of polycarbonate resin or polyarylate resin or their mixture thereof, and wherein the synthetic colorant is stable at molding temperatures and does not contain primary amino, sulfonic acid, or alkali metal carboxylate functionality; wherein the composition has an initial 60° gloss value measured according to ASTM D523 of greater than or equal to 80%; and wherein the composition has greater than or equal to 50% retention of initial gloss after 1000 hours weathering under ASTM G26 or SAE J1960 conditions.
Claim 29
Dependent Claim
12 words
A weatherable polyester composition made by the process of claim 25 .
References Cited (Backward Citations)
US2465319A
Cited
US3153008A
Cited
US3038365A
Cited
US3047539A
Cited
US2999835A
Cited
US3215663A
Cited
US3334154A
Cited
US3635895A
Cited
US3507951A
Cited
US3808180A
Cited
US3953539A
Cited
US3945979A
Cited
US4131575A
Cited
US4001184A
Cited
US4096202A
Cited
US4096202B1
Cited
US4167506A
Cited
US4123436A
Cited
US4204047A
Cited
US4180494A
Cited
US4260695A
Cited
US4257937B1
Cited
US4257937A
Cited
US4292233A
Cited
US4260693A
Cited
US4460733A
Cited
US4839405A
Cited
US4965308A
Cited
US5194523A
Cited
US5502153A
Cited
US5441997A
Cited
US5608027A
Cited
US5672643A
Cited
US5814712A
Cited
US6355723B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-11-04 | 2006-05-06 | 2006-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-04 | 2010-05-06 | 2010-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-04 | 2014-05-06 | 2014-11-05 | $7700.00 | Window Closed / Lapsed |