Patent US4594385A successfully refreshed from Google Patents.
US4594385A
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US
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Coating agents of polyurethane dispersions and the use thereof for top coats and finishes
Assignee: Bayer AG
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Filing: 1982-08-24
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Granted: 1986-06-10
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Expires: 2002-08-24
Abstract
Abstract This invention relates to coating compositions based on aqueous polyurethane dispersions, as well as the use of the coating compositions for the production of top coats or finishes on flexible substrates, particularly on PVC. The present coating agents contain an aqueous polyurethane dispersion having certain physico-chemical properties and the following composition of the solid substance: (A) from about 30 to 60%, by weight, of a hexane diol-1,6-polyester diol having a molecular weight of from about 500 to 6000; (B) up to about 8%, by weight, of a relatively low molecular weight triol having a molecular weight of from about 91 to 399; (C) from about 3 to 30%, by weight, of one or more mono- or poly-functional compounds bearing cationic and/or anionic groups and/or containing non-ionic polyoxyethylene segments; (D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR1## wherein R 1 , R 2 and R 3 , which may be the same or different, each represents hydrogen or a straight- or branched-chain aliphatic hydrocarbon radical containing from 1 to 4 carbon atoms; (E) from about 2.5 to 20%, by weight, of other aliphatic and/or cycloaliphatic diisocyanates; and (F) from about 0.5 to 4%, by weight, of hydrazine; and optionally conventional additives, auxiliaries and catalysts.
Inventors
- 👤 Wilhelm Thoma
- 👤 Klaus Noll
- 👤 Klaus Nachtkamp
- 👤 Josef Pedain
- 👤 Walter Schroer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:07
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/10; C08G18/12; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/44; C08G18/65; C08G18/66; C08G18/6633; C08G18/6637; C08G18/664; C08G18/6644; C08G18/70; C08G18/72; C08G18/721; C08G18/722; C08G18/74; C08G18/75; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
193 words
A coating agent based on an aqueous, polyurethane dispersion containing a solid substance comprising, based on the weight of the solid substance, (A) from about 30 to 60%, by weight, of a polyester diol having a molecular weight of from about 500 to 6000 and wherein the diol component comprises at least about 80 mol % of hexane diol-1,6; (B) from about 0.5 to 5.0%, by weight, of a relatively low molecular weight triol having a molecular weight of from about 92 to 399; (C) from about 3 to 30%, by weight, of at least one mono- or poly-functional compound within the context of the isocyanate-polyaddition reaction bearing anionic groups and/or containing non-ionic polyoxyethylene segments; (D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR5## wherein R 1 , R 2 and R 3 , which may be the same or different, each represents hydrogen or a straight- or branched-chain aliphatic hydrocarbon radical containing from 1 to 4 carbon atoms; (E) from about 2.5 to 20%, by weight, of other aliphatic and/or cycloaliphatic diisocyanates; and (F) from about 0.5 to 4%, by weight, of hydrazine.
Claim 2
Dependent Claim
193 words
A coating agent based on an aqueous, polyurethane dispersion containing a solid substance comprising, based on the weight of the solid substance, (A) from about 30 to 60%, by weight, of a polyester diol having a molecular weight of from about 500 to 6000 and wherein the diol component comprises at least about 80 mol % of hexane diol-1,6; (B) from about 0.5 to 5.0%, by weight, of a relatively low molecular weight triol having a molecular weight of from about 92 to 399; (C) from about 3 to 30%, by weight, of at least one mono- or poly-functional compound within the context of the isocyanate-polyaddition reaction bearing anionic groups and/or containing non-ionic polyoxyethylene segments; (D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR5## wherein R 1 , R 2 and R 3 , which may be the same or different, each represents hydrogen or a straight- or branched-chain aliphatic hydrocarbon radical containing from 1 to 4 carbon atoms; (E) from about 2.5 to 20%, by weight, of other aliphatic and/or cycloaliphatic diisocyanates; and (F) from about 0.5 to 4%, by weight, of hydrazine.
Claim 3
Dependent Claim
20 words
The coating agent according to claim 1 wherein the polyester diol component (A) is a hexane diol-1,6-polyadipate and/or hexane diol-1,6-polycarbonate.
Claim 4
Dependent Claim
21 words
The coating agent according to claim 1 or 2 wherein the lower molecular weight triol (B) is glycerin and/or trimethylol propane.
Claim 5
Dependent Claim
39 words
The coating agent according to claim 1 or 2 wherein component (C) is a non-ionic mono-functional polyether having a molecular weight of from about 500 to 3000 and a polyoxyethylene content of from about 60 to 95%, by weight.
Claim 6
Dependent Claim
56 words
The coating agent according to claim 1 or 2 wherein component (C) corresponds to the following general formula: ##STR6## wherein R represents hydrogen or an organic radical having from 1 to 8 hydrocarbon atoms; m and n represent integers of from 1 to 10; and Me is a quaternized ammonium ion or an alkali metal cation.
Claim 7
Dependent Claim
26 words
The coating agent according to claim 1 or 2 wherein component (C) is an ammonium and or alkali metal salt of an organic dihydroxy carboxylic acid.
Claim 8
Dependent Claim
32 words
The coating agent according to claim 1 or 2 wherein in the compound corresponding to the following general formula: ##STR7## 10 R 1 , R 2 and R 3 represent hydrogen atoms.
Claim 9
Dependent Claim
18 words
The coating agent according to claim 1 or 2 wherein the diisocyanate (E) is 3-isocyanatomethyl-3,5,5-trimethyl cyclohexylisocyanate and/or 1,6-diisocyanatohexane.
Claim 10
Dependent Claim
156 words
A coating agent based on an aqueous, polyurethane dispersion containing a solid substance comprising, based on the weight of the solid substance, (A) from about 30 to 60%, by weight, of a polyester diol having a molecular weight of from about 500 to 6000 and selected from the group consisting of hexane diol-1,6-polyadipate, hexane diol-1,6-polycarbonate and mixtures thereof; (B) from about 0.5 to 5.0%, by weight, of glycerin and/or trimethylol propane; (C) from about 3 to 30%, by weight, of at least one mono- or poly-functional compound within the context of the isocyanate-polyaddition reaction bearing anionic and/or non-ionic polyoxyethylene segments; (D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR8## wherein R 1 , R 2 and R 3 , represents hydrogen atoms; (E) from about 2.5 to 20%, by weight, of 3-isocyanatomethyl-3,5,5 trimethyl cyclohexylisocyanate and/or 1,6-diisocyanatohexane; and (F) from about 0.5 to 4%, by weight, of hydrazine.
Claim 11
Dependent Claim
156 words
A coating agent based on an aqueous, polyurethane dispersion containing a solid substance comprising, based on the weight of the solid substance, (A) from about 30 to 60%, by weight, of a polyester diol having a molecular weight of from about 500 to 6000 and selected from the group consisting of hexane diol-1,6-polyadipate, hexane diol-1,6-polycarbonate and mixtures thereof; (B) from about 0.5 to 5.0%, by weight, of glycerin and/or trimethylol propane; (C) from about 3 to 30%, by weight, of at least one mono- or poly-functional compound within the context of the isocyanate-polyaddition reaction bearing anionic and/or non-ionic polyoxyethylene segments; (D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR8## wherein R 1 , R 2 and R 3 , represents hydrogen atoms; (E) from about 2.5 to 20%, by weight, of 3-isocyanatomethyl-3,5,5 trimethyl cyclohexylisocyanate and/or 1,6-diisocyanatohexane; and (F) from about 0.5 to 4%, by weight, of hydrazine.
Claim 12
Dependent Claim
37 words
The coating agent according to claim 9 wherein component (C) is a non-ionic mono-functional polyether having a molecular weight of from about 500 to 3000 and a polyoxyethylene content of from about 60 to 95%, by weight.
Claim 13
Dependent Claim
54 words
The coating agent according to claim 9 wherein component (C) corresponds to the following general formula: ##STR9## wherein R represents hydrogen or an organic radical having from 1 to 8 hydrocarbon atoms; m and n represent integers of from 1 to 10; and Me is a quaternized ammonium ion or an alkali metal cation.
Claim 14
Dependent Claim
23 words
The coating agent according to claim 9 wherein component (C) is an ammonium and/or alkali metal salt of an organic dihydroxy carboxylic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |