Patent US4740542A successfully refreshed from Google Patents.
US4740542A
Expired / Lapsed
US
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Stabilization of high solids coatings with synergistic combinations
Assignee: Wyeth Holdings LLC
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Filing: 1986-08-11
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Granted: 1988-04-26
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Expires: 2006-08-11
Abstract
Abstract A method of stabilizing a polymer film coating or molded article against the action of light, moisture, and oxygen is disclosed. The method comprises incorporating in said polymer a stabilizingly and synergistically effective amount of: (A) A 2,2,6,6-tetraalkylpiperidine compound, or the acid addition salts or complexes with metal compounds thereof; and (B) A tris-aryl-s-triazine compound represented by the formula: ##STR1## wherein X, Y and Z are each aromatic, carbocylic radicals of less than three 6-membered rings, and at least one of X, Y and Z is substituted by a hydroxy group ortho to the point of attachment to the triazine ring; and each of R 1 through R 9 is selected from the group consisting of hydrogen, hydroxy, alkyl, alkoxy, sulfonic, carboxy, halo, haloalkyl and acylamino.
Inventors
- 👤 Peter V. Susi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/3412; C08K5/3432; C08K5/3435; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
A light stable composition comprising: (A) A synthetic polymer useful in coatings and susceptible to degradation by light; and (B) An effective amount of a synergistic stabilizer combination comprising: (1) a 2,2,6,6-tetraalkylpiperidine compound; and (2) a tris-aryl-s-triazine compound represented by the formula: ##STR23## wherein X, Y and Z are each aromatic, carbocyclic radicals of less than three 6-membered rings, and at least one of X, Y and Z is substituted by a hydroxy group ortho to the point of attachment to the triazine ring; and each of R 1 through R 9 is selected from the group consisting of hydrogen, hydroxy, alkyl, alkoxy, sulfonic, carboxy, halo, haloalkyl and acylamino.
Claim 2
Dependent Claim
109 words
A light stable composition comprising: (A) A synthetic polymer useful in coatings and susceptible to degradation by light; and (B) An effective amount of a synergistic stabilizer combination comprising: (1) a 2,2,6,6-tetraalkylpiperidine compound; and (2) a tris-aryl-s-triazine compound represented by the formula: ##STR23## wherein X, Y and Z are each aromatic, carbocyclic radicals of less than three 6-membered rings, and at least one of X, Y and Z is substituted by a hydroxy group ortho to the point of attachment to the triazine ring; and each of R 1 through R 9 is selected from the group consisting of hydrogen, hydroxy, alkyl, alkoxy, sulfonic, carboxy, halo, haloalkyl and acylamino.
Claim 3
Dependent Claim
25 words
The light stable composition of claim 1 wherein said synthetic polymer is an acid catalyzed thermoset acrylic coating or an acid catalyzed thermoset alkyd resin.
Claim 4
Dependent Claim
22 words
The light stable composition of claim 1 wherein said piperidine is selected from the group consisting of compounds of the formula: ##STR24##
Claim 5
Dependent Claim
30 words
The light stable composition of claim 1 wherein said triazine is a compound represented by the formula: ##STR25## wherein R is hydrogen or alkyl of 1 to 18 carbon atoms.
Claim 6
Dependent Claim
17 words
The light stable composition of claim 4 wherein R is hydrogen or C 8 H 17 .
Claim 7
Dependent Claim
53 words
The light stable composition of claim 1 wherein said piperidine compound is present in an amount of from about 0.01 to about 5 wt. % based on total resin solids and said triazine compound is present in an amount of from about 0.01 to about 5 wt. % based on total resin solids.
Claim 8
Dependent Claim
31 words
The light stable composition of claim 1 wherein said piperidine compound and said triazine compound are each added in an amount of about 0.5%, by weight, based on total resin solids.
Claim 9
Dependent Claim
29 words
The light stable composition of claim 3 wherein said triazine is a compound of the formula: ##STR26## wherein R is hydrogen or alkyl of 1 to 18 carbon atoms.
Claim 10
Dependent Claim
17 words
The light stable composition of claim 8 wherein R is hydrogen or C 8 H 17 .
Claim 11
Dependent Claim
53 words
The light stable composition of claim 8 wherein said piperidine compound is present in an amount of from about 0.01 to about 5 wt. % based on total resin solids and said triazine compound is present in an amount of from about 0.01 to about 5 wt. % based on total resin solids.
Claim 12
Dependent Claim
31 words
The light stable composition of claim 8 wherein said piperidine compound and said triazine compound are each added in an amount of about 0.5%, by weight, based on total resin solids.
Claim 13
Dependent Claim
19 words
The light stable composition of claim 1 in the form of a film, a coating or a molded article.
Claim 14
Dependent Claim
19 words
The light stable composition of claim 2 in the form of a film, a coating or a molded article.
Claim 15
Dependent Claim
19 words
The light stable composition of claim 8 in the form of a film, a coating or a molded article.
Claim 16
Dependent Claim
19 words
The light stable composition of claim 9 in the form of a film, a coating or a molded article.
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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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |