US4895901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymetic hindered amine light stabilizers
Assignee: Vibrantz Corp
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Filing: 1988-11-23
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Granted: 1990-01-23
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Expires: 2008-11-23
Abstract
Abstract The present invention relates to novel compounds corresponding to the formula: ##STR1## wherein R 1 and R 4 may be the same or different, and each is a lower alkyl radical; R 2 and R 3 may be the same or different, and each is a substituted piperidine radical; M is equal to the total number of monomer units in the polymer chain, and is of a magnitude sufficient to provide a polymer having a molecular weight of at least 500; W is equal to at least 0.5, X is equal to at least 0.1 but not greater than 0.2, Y is equal to at least 0.1, Z is equal to at least 0.05 but not greater than 0.2, and W plus X plus Y plus Z is equal to 1. These novel compounds are useful as stabilizers for a wide variety of organic materials and are prepared by transesterification of a suitable acrylate-methacrylate copolymer.
Inventors
- 👤 Chester E. Ramey
- 👤 Ronald E. Thompson
- 👤 Charles J. Rostek, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
155 words
An organic composition subject to thermal oxidative or actinic light deterioration, having incorporated therein a stabilizing amount of a piperidine modified acrylate-methacrylate copolymer stabilizer comprisng monomer units (I), (II), (III), and (IV) corresponding to the formula: ##STR26## wherein R 1 and R 4 may be the same or different, and each is a lower alkyl radical; R 2 and R 3 may be the same or different, and each is a substituted piperidine radical; M is equal to the total number of monomer units in the polymer chain, and is of a magnitude sufficient to provide a polymer having molecular weight of at least 500; W is equal to at least 0.5; X is equal to at least 0.1 but not greater than 0.2, Y is equal to at least 0.1, Z is equal to at least 0.05 but not greater than 0.2, and W plus X plus Y pluz Z is equal to 1.
Claim 2
Dependent Claim
155 words
An organic composition subject to thermal oxidative or actinic light deterioration, having incorporated therein a stabilizing amount of a piperidine modified acrylate-methacrylate copolymer stabilizer comprisng monomer units (I), (II), (III), and (IV) corresponding to the formula: ##STR26## wherein R 1 and R 4 may be the same or different, and each is a lower alkyl radical; R 2 and R 3 may be the same or different, and each is a substituted piperidine radical; M is equal to the total number of monomer units in the polymer chain, and is of a magnitude sufficient to provide a polymer having molecular weight of at least 500; W is equal to at least 0.5; X is equal to at least 0.1 but not greater than 0.2, Y is equal to at least 0.1, Z is equal to at least 0.05 but not greater than 0.2, and W plus X plus Y pluz Z is equal to 1.
Claim 3
Dependent Claim
31 words
The organic composition according to claim 1 wherein said polymeric stabilizer is present in an amount equal to from about 0.01% to about 5.0% of the total weight of the composition.
Claim 4
Dependent Claim
31 words
The organic composition according to claim 1 wherein said polymeric stabilizer is present in an amount equal to from about 0.05% to about 2.0% of the total weight of the composition.
Claim 5
Dependent Claim
31 words
The organic composition according to claim 1 wherein said polymeric stabilizer is present in an amount equal to from about 0.1% to about 1.0% of the total weight of the composition.
Claim 6
Dependent Claim
36 words
The organic composition according to claim 1 wherein said polymeric stabilizer is present in an amount sufficient to provide from about 0.00035 grams to about 0.3 grams of Nitrogen per 100 grams of said organic composition.
Claim 7
Dependent Claim
36 words
The organic composition according to claim 1 wherein said polymeric stabilizer is present in an amount sufficient to provide from about 0.00035 grams to about 0.175 grams of Nitrogen per 100 grams of said organic composition.
Claim 8
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polyolefin polymer.
Claim 9
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polyolefin copolymer.
Claim 10
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polypropylene polymer.
Claim 11
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polypropylene copolymer.
Claim 12
Dependent Claim
16 words
The organic composition according to claim 3 wherein said organic composition is a vinyl halide polymer.
Claim 13
Dependent Claim
16 words
The organic composition according to claim 3 wherein said organic composition is a vinyl halide copolymer.
Claim 14
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polyethylene polymer.
Claim 15
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polyethylene copolymer.
Claim 16
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polystyrene polymer.
Claim 17
Dependent Claim
15 words
The organic composition according to claim 3 wherein said organic composition is a polystyrene copolymer.
Claim 18
Dependent Claim
17 words
The organic composition according to claim 3 wherein said organic composition is a linear low density polyethylene.
Claim 19
Dependent Claim
17 words
The organic composition according to claim 3 wherein said organic composition is an acrylic based coating composition.
Claim 20
Dependent Claim
17 words
The organic composition according to claim 3 wherein said organic composition is a polyurethane based coating composition.
Claim 21
Dependent Claim
18 words
The organic composition according to claim 3 wherein said organic composition is an alkyd resin based coating composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
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