US4520167A
Expired / Lapsed
US
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Hydroxyalkyl carbamate diluent for coating compositions and compositions containing the same
Assignee: Wyeth Holdings LLC
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Filing: 1984-02-17
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Granted: 1985-05-28
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Expires: 2004-02-17
Abstract
Abstract A coating composition comprises an hydroxyalkyl carbamate compound, an amino cross-linker, a polymer containing active sites which are reactive with the cross-linker and, optionally, an acid catalyst. The hydroxyalkyl carbamate compound serves as a reactive diluent in the composition. The composition is stable at ambient temperature and reactive at elevated temperature to form a cross-linked compound in which the hydroxyalkyl carbamate compound is incorporated.
Inventors
- 👤 Werner J. Blank
- 👤 Girish G. Parekh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
C; C09; C09D; C09D201/00; C09D201/02; C09D201/025; C08; C08G; C08G71/00; C08G71/04; C08K; C08K5/00; C08K5/16; C08K5/205; C08L; C08L75/00; C08L75/04; C09D161/00; C09D161/20; C09D167/00; C09D7/00; C09D7/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
A coating composition comprising: (a) a hydroxyalkyl carbamate compound of the formula ##STR7## wherein n=0 or 1, R is a C 1 to C 20 organic moiety which may contain one or more constituents selected from the class consisting of hetero-atoms and hydroxyl groups, and each of R 1 , R 2 and R 3 is independently H or CH 3 ; (b) an amide-aldehyde cross-linker; and (c) a polymer containing active sites which, at elevated temperatures are reactive with the amide-aldehyde cross-linker (b); the compound (a), the cross-linker (b) and the polymer (c) being stable relative to each other in the composition while at ambient temperature, and reactive at elevated temperature.
Claim 2
Dependent Claim
112 words
A coating composition comprising: (a) a hydroxyalkyl carbamate compound of the formula ##STR7## wherein n=0 or 1, R is a C 1 to C 20 organic moiety which may contain one or more constituents selected from the class consisting of hetero-atoms and hydroxyl groups, and each of R 1 , R 2 and R 3 is independently H or CH 3 ; (b) an amide-aldehyde cross-linker; and (c) a polymer containing active sites which, at elevated temperatures are reactive with the amide-aldehyde cross-linker (b); the compound (a), the cross-linker (b) and the polymer (c) being stable relative to each other in the composition while at ambient temperature, and reactive at elevated temperature.
Claim 3
Dependent Claim
64 words
The coating composition of claim 1 wherein the components (a)-(c) thereof are present in weight proportions, based on the weight of resin solids for the resinous components, of from about 1 to about 50 parts of the hydroxyalkyl carbamate compound (a); from about 5 to about 50 parts of the cross-linker (b); and from about 40 to about 94 parts of the polymer (c).
Claim 4
Dependent Claim
64 words
The coating composition of claim 1 wherein the components (a)-(c) thereof are present in weight proportions, based on the weight of resin solids for the resinous components, of from about 5 to about 30 parts of the hydroxyalkyl carbamate compound (a); from about 10 to about 30 parts of the cross-linker (b); and from about 60 to about 85 parts of the polymer (c).
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein the formula of compound (a), n=0 whereby the hydroxyalkyl carbamate compound has the formula ##STR8##
Claim 6
Dependent Claim
72 words
The composition of claim 1 wherein the compound (a) has the formula selected from the class consisting of ##STR9## where R is a C 2 to a C 20 aliphatic, cycloaliphatic or aromatic moiety, including any one of the foregoing containing heteroatoms, and R 1 is H or CH 3 ; and ##STR10## where R is a C 2 to C 6 alkyl and R 1 is H or CH 3 .
Claim 7
Dependent Claim
38 words
The composition of claim 1 wherein the amide-aldehyde cross-linker (b) is selected from the class consisting of one or more of melamine formaldehyde and glycoluril-formaldehyde resins which have been at least partially alkylated and at least partially methylolated.
Claim 8
Dependent Claim
23 words
The composition of claim 1 wherein the polymer (c) is selected from the class consisting of acrylic, polyester, alkyd and epoxy ester resins.
Claim 9
Dependent Claim
34 words
The composition of claim 1 wherein the polymer (c) is a resin containing functional groups selected from the class consisting of one or more of --OH, --COOH, --CONH 2 , and --OCONH 2 .
Claim 10
Dependent Claim
26 words
The composition of claim 8 wherein the functional groups comprise from about 0.3 to about 25% by weight of the weight of the polymer (c) solids.
Claim 11
Dependent Claim
9 words
The composition of claim 1 comprising an acid catalyst.
Claim 12
Dependent Claim
28 words
The composition of claim 10 wherein the acid catalyst is selected from the class consisting of one or more of blocked or unblocked Lewis acids and Bronsted acids.
Claim 13
Dependent Claim
17 words
The composition of claim 2 comprising from about 0.1 to about 10 parts of an acid catalyst.
Claim 14
Dependent Claim
17 words
The composition of claim 3 comprising from about 0.2 to about 5 parts of an acid catalyst.
Claim 15
Dependent Claim
33 words
The coating composition of claim 1 wherein the amide-aldehyde cross-linker is selected from the group consisting of: (i) aminotriazine-aldehyde resins; (ii) melamine-formaldehyde resins; (iii) glycoluril-formaldehyde resins; (iv) urea-formaldehyde resins; and (v) benzoguanamine-formaldehyde resins.
References Cited (Backward Citations)
US3557043A
Cited
US3931086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |