US4173594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting lacquer compositions
Assignee: Lord Corp
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Filing: 1975-02-24
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Granted: 1979-11-06
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Expires: 1995-02-24
Abstract
Abstract A thermosetting coating composition comprising the organic solvent-soluble reaction product formed by contacting at an elevated temperature at least one blocked isocyanate-functional urethane and at least one organic solvent-soluble phenolic resin, and, optionally, at least one blocked isocyanate-functional urethane. The compositions are storage-stable for extended periods and cure to a thermoset state to afford tough, durable, flexible finishes which are resistant to cracking, staining, and marring.
Inventors
- 👤 Zygmunt D. Dyszlewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/08; C08G18/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31855; Y10T428/31859; Y10T428/31877; Y10T442/00; Y10T442/20; Y10T442/2369
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
41 words
Polyurethane-phenolic resin adducts comprising the organic solvent-soluble reaction product formed by contacting a blocked isocyanate-functional polyurethane and an organic solvent-soluble phenolic resin at a temperature sufficient to dissociate said blocked polyurethane and initiate reaction between said polyurethane and said phenolic resin.
Claim 2
Dependent Claim
41 words
Polyurethane-phenolic resin adducts comprising the organic solvent-soluble reaction product formed by contacting a blocked isocyanate-functional polyurethane and an organic solvent-soluble phenolic resin at a temperature sufficient to dissociate said blocked polyurethane and initiate reaction between said polyurethane and said phenolic resin.
Claim 3
Dependent Claim
30 words
Polyurethane-phenolic resin adducts according to claim 1 wherein said reaction between said polyurethane and said phenolic resin is continued to the point of substantially complete dehydration of the reaction mixture.
Claim 4
Dependent Claim
30 words
Polyurethane-phenolic resin adducts according to claim 2 wherein said phenolic resin comprises the reaction product of an aromatic hydroxy compound and an aldehyde having from 1 to 8 carbon atoms.
Claim 5
Dependent Claim
35 words
Polyurethane-phenolic resin adducts according to claim 3 where said phenolic resin is formed by effecting reaction between said aromatic hydroxy compound and said aldehyde in the presence of at least one neutral or basic catalyst.
Claim 6
Dependent Claim
12 words
Polyurethane-phenolic resin adducts according to claim 4 wherein said catalyst is ammonia.
Claim 7
Dependent Claim
14 words
Polyurethane-phenolic resin adducts according to claim 5 wherein said aromatic hydroxy compound is o-cresol.
Claim 8
Dependent Claim
35 words
Polyurethane-phenolic resin adducts according to claim 2 wherein said phenolic resin has a molecular weight in the range of about 300 to about 1,200, and said polyurethane has a molecular weight of at least 500.
Claim 9
Dependent Claim
23 words
Polyurethane-phenolic resin adducts according to claim 7 wherein said polyurethane has a molecular weight in the range from about 1,000 to about 10,000.
Claim 10
Dependent Claim
30 words
Polyurethane-phenolic resin adducts according to claim 8 wherein said phenolic resin comprises the reaction product of an aromatic hydroxy compound and an aldehyde having from 1 to 8 carbon atoms.
Claim 11
Dependent Claim
35 words
Polyurethane-phenolic resin adducts according to claim 9 wherein said phenolic resin is formed by effecting reaction between said aromatic hydroxy compound and said aldehyde in the presence of at least one neutral or basic catalyst.
Claim 12
Dependent Claim
26 words
Polyurethane-phenolic resin adducts according to claim 10 wherein the equivalent ratio of aromatic hydroxy compound: aldehyde is in the range from about 1:0.8 to about 1:5.
Claim 13
Dependent Claim
14 words
Polyurethane-phenolic resin adducts according to claim 11 wherein said aromatic hydroxy compound is o-cresol.
Claim 14
Dependent Claim
12 words
Polyurethane-phenolic resin adducts according to claim 11 wherein said catalyst is ammonia.
Claim 15
Dependent Claim
14 words
Polyurethane-phenolic resin adducts according to claim 13 wherein said aromatic hydroxy compound is o-cresol.
Claim 16
Dependent Claim
15 words
Polyurethane-phenolic resin adducts according to claim 14 wherein said polyurethane comprises a ketoxime-blocked isocyanate-functional polyurethane.
Claim 17
Dependent Claim
16 words
Polyurethane-phenolic resin adducts according to claim 15 wherein said ketoxime-blocked isocyanate-functional polyurethane is derived from polycaprolactone.
Claim 18
Dependent Claim
22 words
A thermosetting coating composition comprising at least one polyurethane-phenolic resin adduct as defined in claim 1 and an inert organic solvent therefor.
Claim 19
Dependent Claim
22 words
A coating composition according to claim 17 having a total solids content in the range from about 30 to about 80 percent.
Claim 20
Dependent Claim
30 words
A thermosetting coating composition according to claim 17 containing from about 5 to about 50 weight percent, based on the weight of said adduct, of at least one blocked polyurethane.
Claim 21
Dependent Claim
30 words
A thermosetting coating composition according to claim 18 containing from about 5 to about 50 weight percent, based on the weight of said adduct, of at least one blocked polyurethane.
Claim 22
Dependent Claim
53 words
A process for the preparation of polyurethane-phenolic resin adducts which comprises contacting at least one blocked isocyanate-functional polyurethane and at least one organic solvent-soluble phenolic resin at a temperature sufficient to cause dissociation of at least one blocked isocyanate group of said polyurethane and initiate reaction between said polyurethane and said phenolic resin.
Claim 23
Dependent Claim
53 words
A process for the preparation of polyurethane-phenolic resin adducts which comprises contacting at least one blocked isocyanate-functional polyurethane and at least one organic solvent-soluble phenolic resin at a temperature sufficient to cause dissociation of at least one blocked isocyanate group of said polyurethane and initiate reaction between said polyurethane and said phenolic resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |