Patent US1268176A successfully refreshed from Google Patents.
Patent US4707537A successfully refreshed from Google Patents.
US4707537A
Expired / Lapsed
US
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UV-absorbing condensation polymeric compositions and products therefrom
Assignee: Eastman Chemical Co
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Filing: 1986-09-30
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Granted: 1987-11-17
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Expires: 2006-09-30
Abstract
Abstract Polyester compositions useful in formed articles such as beverage bottles and having condensation reacted therein at least one UV-absorbing compound of the formula ##STR1## wherein X is hydroxyl, carboxy, carbalkoxy, substituted carbalkoxy, or acyloxy; Y is cyano, carbamyl, substituted carbamyl, aryl, acyl, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl, or substituted phenylsulfonyl; R is selected from -alkylene-O-alkylene-, -alkylene-S-alkylene-, -alkylene-N(-SO 2 alkyl)-alkylene-, straight or branched chain alkylene or such alkylene substituted with an X substituent; and R 1 is hydrogen or 1-3 groups selected from alkyl, alkoxy and halogen.
Inventors
- 👤 Wayne P. Pruett
- 👤 Richard H. S. Wang
- 👤 Samuel D. Hilbert
- 👤 Max A. Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:01
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G63/68
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A polyester composition having a maximum light absorbance within the range of from about 320 nm to about 380 nm and having reacted therein a total of from about 1.0 to about 5,000 parts by weight per million parts by weight of polyester of at least one UV-absorbing compound of the formula ##STR19## wherein X is hydroxyl, carboxy, carbalkoxy, substituted carbalkoxy, or acyloxy; Y is cyano, carbamyl, substituted carbamyl, aryl, acyl, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl, or substituted phenylsulfonyl; R is selected from -alkylene-O-alkylene-, -alkylene-S-alkylene-, -alkylene-N(-SO 2 alkyl)-alkylene-, straight or branched chain alkylene or such alkylene substituted with an X substituent; and R 1 is hydrogen or 1-3 groups selected from alkyl, alkoxy and halogen.
Claim 2
Dependent Claim
114 words
A polyester composition having a maximum light absorbance within the range of from about 320 nm to about 380 nm and having reacted therein a total of from about 1.0 to about 5,000 parts by weight per million parts by weight of polyester of at least one UV-absorbing compound of the formula ##STR19## wherein X is hydroxyl, carboxy, carbalkoxy, substituted carbalkoxy, or acyloxy; Y is cyano, carbamyl, substituted carbamyl, aryl, acyl, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl, or substituted phenylsulfonyl; R is selected from -alkylene-O-alkylene-, -alkylene-S-alkylene-, -alkylene-N(-SO 2 alkyl)-alkylene-, straight or branched chain alkylene or such alkylene substituted with an X substituent; and R 1 is hydrogen or 1-3 groups selected from alkyl, alkoxy and halogen.
Claim 3
Dependent Claim
82 words
A polyester composition of claim 1 having an inherent viscosity of from about 0.4 to about 1.2 determined according to ASTM D2857-70 procedure in a Wagner Viscometer of Lab Glass Inc. of Vineland, N.J. having a 1/2 ml. capillary bulk, using a polymer concentration of 0.5% by weight in 60/40 by weight, phenol/tetrachloroethane solvent wherein: X is hydroxy; R is alkylene of 1-8 carbons R 1 is hydrogen or alkoxy of 1-8 carbons; and Y is cyano, carbamyl, alkyl carbamyl, or alkylsulfonyl.
Claim 4
Dependent Claim
15 words
A polyester composition of claim 1 having copolymerized therein the compound of the structure ##STR20##
Claim 5
Dependent Claim
38 words
A polyester composition of claim 1 wherein the acid moiety is comprised of at least about 50 mol % terephthalic acid residue, and the glycol moiety of at least about 50 mol % ethylene glycol or 1,4-cyclohexanedimethanol residue.
Claim 6
Dependent Claim
39 words
A polyester composition of claim 2 having an inherent viscosity of from about 0.65 to about 0.85, wherein the acid moiety is 100 mol % terephthalic acid residue, and the glycol moiety is 100 mol % ethylene glycol residue.
Claim 7
Dependent Claim
51 words
A polyester composition of claim 2 having an inherent viscosity of from about 0.65 to about 0.85, wherein the acid moiety is 100 mol % terephthalic acid residue, and the glycol moiety is comprised of from about 65 to about 95 mol % ethylene glycol residue, the remainder being 1,4-cyclohexanedimethanol residue.
Claim 8
Dependent Claim
12 words
A formed article of the polyester composition of any of claims 1-6.
References Cited (Backward Citations)
US4361695A
Cited
US4547563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |