US4505986A
Expired / Lapsed
US
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Process for coating wood or wood fibres-containing substrates, and an oxidatively drying coating composition to be used therewith
Assignee: Akzo NV
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Filing: 1983-12-30
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Granted: 1985-03-19
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Expires: 2003-12-30
Abstract
Abstract This invention pertains to a process for coating wood or a wood fibres-containing substrate using an oxidatively drying coating composition based on an alkyd resin built up of an ethylenically unsaturated monocarboxylic acid, a saturated di- or polyvalent hydroxyl compound and a specific benzotriazole or benzophenone compound. The coating exhibits improved durability and ensures good protection of the substrate against the effects of ultraviolet radiation.
Inventors
- 👤 Dirk J. F. Geerdes
- 👤 Klaus H. Zabel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:17
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C09; C09D; C09D167/00; C09D167/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
145 words
A process for coating wood or wood fibres-containing substrates with the aid of an oxidatively drying coating composition, characterized in that use is made of a coating composition based on an alkyd resin having a number average molecular weight of 800-10000, an acid number of 0-80 and a hydroxyl number of 0-120 and built up of 12-75% by weight of an ethylenically unsaturated monocarboxylic acid having 6-24 carbon atoms, 10-65% by weight of a saturated, di- or polyvalent, cycloaliphatic carboxylic acid having 7-11 carbon atoms, 10-45% by weight of a di- or polyvalent hydroxyl compound and 0,1-8% by weight of a 2-(2'-hydroxyphenyl)-benzotriazole compound and/or a 2-hydroxy benzophenone compound having at least one substituent containing a carboxyl group, an aliphatic or cycloaliphatic hydroxyl group, a carboxyl group esterified with an alkyl group having 1-4 carbon atoms, an epoxy group and/or a primary or secondary amino group.
Claim 2
Dependent Claim
145 words
A process for coating wood or wood fibres-containing substrates with the aid of an oxidatively drying coating composition, characterized in that use is made of a coating composition based on an alkyd resin having a number average molecular weight of 800-10000, an acid number of 0-80 and a hydroxyl number of 0-120 and built up of 12-75% by weight of an ethylenically unsaturated monocarboxylic acid having 6-24 carbon atoms, 10-65% by weight of a saturated, di- or polyvalent, cycloaliphatic carboxylic acid having 7-11 carbon atoms, 10-45% by weight of a di- or polyvalent hydroxyl compound and 0,1-8% by weight of a 2-(2'-hydroxyphenyl)-benzotriazole compound and/or a 2-hydroxy benzophenone compound having at least one substituent containing a carboxyl group, an aliphatic or cycloaliphatic hydroxyl group, a carboxyl group esterified with an alkyl group having 1-4 carbon atoms, an epoxy group and/or a primary or secondary amino group.
Claim 3
Dependent Claim
14 words
A process according to claim 1, characterized in that said coating composition is transparent.
Claim 4
Dependent Claim
22 words
A process according to claim 1, characterized in that 20-70% by weight of the alkyd resin consists of ethylenically unsaturated monocarboxylic acid.
Claim 5
Dependent Claim
28 words
A process according to claim 1, characterized in that the di- or polyvalent cycloaliphatic carboxylic acid of which the alkyd resin is partly built up is cyclohexane-1,2-dicarboxylic acid.
Claim 6
Dependent Claim
26 words
A process according to claim 1, characterized in that 15-50% by weight of the alkyd resin consists of the saturated di- or polyvalent cycloaliphatic carboxylic acid.
Claim 7
Dependent Claim
35 words
A process according to claim 1, characterized in that the di- or polyvalent hydroxyl compound of which the alkyd resin is partly built up is an aliphatic and/or cycloaliphatic hydroxyl compound having 2-8 hydroxyl groups.
Claim 8
Dependent Claim
19 words
A process according to claim 6, characterized in that the aliphatic and/or cycloaliphatic hydroxyl compound has 2-4 hydroxyl groups.
Claim 9
Dependent Claim
24 words
A process according to claim 1, characterized in that 12-35% by weight of the alkyd resin consists of a di- or polyvalent hydroxyl compound.
Claim 10
Dependent Claim
115 words
A process according to claim 1, characterized in that the benzotriazole or benzophenone compound of which the alkyd resin is partly built up is an addition product of a compound of the general formula ##STR2## wherein R 1 and R 2 may be the same or different and represent a halogen atom, an alkyl group or an alkoxy group having 1-18 carbon atoms, a cycloalkyl group having 5-8 carbon atoms, an aryl group or an arylalkyl group having 7-10 carbon atoms, and m and/or n is a whole number or whole numbers, with the proviso that m+n=1-3, and p and q are each 0, 1 or 2, and an epoxy compound or an aziridin compound.
Claim 11
Dependent Claim
29 words
A process according to claim 9, characterized in that the epoxy compound is glycidol, propylene oxide or a glycidyl ester of a branched fatty acid having 9-11 carbon atoms.
Claim 12
Dependent Claim
42 words
A process according to claim 1, characterized in that the alkyd resin is partly built up of an addition product of 2-(2',4'-dihydroxyphenyl)-benzotriazole or 2,4-dihydroxy benzophenone and glycidol, propylene oxide or a glycidyl ester of a branched fatty acid having 9-11 carbon atoms.
Claim 13
Dependent Claim
31 words
A process according to claim 1, characterized in that the alkyd resin has a number average molecular weight of 1200-8000, an acid number of 0-60 and/or a hydroxyl number of 0-80.
Claim 14
Dependent Claim
24 words
A process according to claim 1, characterized in that the coating composition contains an iron oxide having an average particle size of 0.001-0.09 μm.
Claim 15
Dependent Claim
24 words
A process according to claim 1, characterized in that the coating composition contains an iron oxide having an average particle size of 0.005-0.06 μm.
Claim 16
Dependent Claim
31 words
A process according to claim 1, characterized in that the coating composition contains a mixture of an earth pigment and an iron oxide having an average particle size of 0.001-0.09 μm.
Claim 17
Dependent Claim
36 words
A process according to claim 1, characterized in that the iron oxide is present in the coating composition in an amount not higher than 20% by weight, based on the alkyd resin (calculated as solid matter).
Claim 18
Dependent Claim
18 words
A process according to claim 1, characterized in that the coating composition contains water and/or an organic solvent.
Claim 19
Dependent Claim
130 words
An oxidatively drying coating composition based on an alkyd resin as binder, characterized in that the alkyd resin has a number average molecular weight of 800-10000, an acid number of 0-80 and a hydroxyl number of 0-120 and is built up of 12-75% by weight of an ethylenically unsaturated monocarboxylic acid having 6-24 carbon atoms, 10-65% by weight of a saturated, di- or polyvalent cycloaliphatic carboxylic acid having 7-11 carbon atoms, 10-45% by weight of a di- or polyvalent hydroxyl compound and 0.1-8% by weight of a 2-(2'-hydroxyphenyl)-benzotriazole compound and/or a 2-hydroxybenzophenone compound having at least one substituent containing a carboxyl group, an aliphatic or cycloaliphatic hydroxyl group, a carboxyl group esterified with an alkyl group having 1-4 carbon atoms, an epoxy group and/or a primary or secondary amino group.
Claim 20
Dependent Claim
130 words
An oxidatively drying coating composition based on an alkyd resin as binder, characterized in that the alkyd resin has a number average molecular weight of 800-10000, an acid number of 0-80 and a hydroxyl number of 0-120 and is built up of 12-75% by weight of an ethylenically unsaturated monocarboxylic acid having 6-24 carbon atoms, 10-65% by weight of a saturated, di- or polyvalent cycloaliphatic carboxylic acid having 7-11 carbon atoms, 10-45% by weight of a di- or polyvalent hydroxyl compound and 0.1-8% by weight of a 2-(2'-hydroxyphenyl)-benzotriazole compound and/or a 2-hydroxybenzophenone compound having at least one substituent containing a carboxyl group, an aliphatic or cycloaliphatic hydroxyl group, a carboxyl group esterified with an alkyl group having 1-4 carbon atoms, an epoxy group and/or a primary or secondary amino group.
Claim 21
Dependent Claim
19 words
A process for coating a substrate with the aid of an oxidatively drying coating composition according to claim 18.
Claim 22
Dependent Claim
10 words
Coated substrate obtained by the process according to claim 19.
References Cited (Backward Citations)
US3926638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |