US4238592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of duroplastic, single-component polyurethanes
Assignee: Huels AG
•
Filing: 1978-07-20
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Granted: 1980-12-09
•
Expires: 1998-07-20
Abstract
Abstract A method for the production of single-component polyurethane lacquers which comprises: reacting (1) a polyester having an OH-functionality of at least 2, an OH-count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta-, and para-dicarboxylic acids, 1,2,5-bezenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C 1 -C 4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 carbon atoms with (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate groups is 1.0:0.7 to 1.0:1.1.
Inventors
- 👤 Felix Schmitt
- 👤 Gunter Kriebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:43
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/80; C08G18/8061; C08G18/807; C08G18/8077; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
103 words
A method for the production of single-component polyurethane lacquers which comprises: reacting (1) a polyester having an OH-functionality of at least 2, an OH-count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta-, and para-dicarboxylic acids, 1,2,5-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C 1 -C 4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 C atoms with (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate group is 1.0:0.7 to 1.0:1.1.
Claim 2
Independent Claim
103 words
A method for the production of single-component polyurethane lacquers which comprises: reacting (1) a polyester having an OH-functionality of at least 2, an OH-count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta-, and para-dicarboxylic acids, 1,2,5-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C 1 -C 4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 C atoms with (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate group is 1.0:0.7 to 1.0:1.1.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the ratio of OH groups to said blocked isocyanate groups is 1.0:1.0.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein said glycol has a chain which contains 5-6 C atoms.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein said glycol is selected from the group consisting of 1,5-pentanediol, 1,6-hexanediol, 2,2,4-trimethylhexanediol, 2,4,4-trimethylhexanediol and 3-methylpentanediol.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the OH count of said polyester is 100 mg KOH/g.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein in addition to said glycol, said polyester is also derived from a trifunctional alcohol.
Claim 8
Dependent Claim
19 words
The method of claim 6 wherein said trifunctional alcohol is selected from the group consisting of trimethylolpropane, trimethylolethane triethanolpropane.
Claim 9
Dependent Claim
26 words
The method of claim 1 wherein said polyisocyanate is selected from the group consisting of 3,4-hexahydrotoluylenediisocyanate, 2,6-hexahydrotoluylenediisocyanate, o-, m-, and p-hexahydroxylylenediisocyanate, 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate, 4,4'-dicyclohexylmethanediisocyanate, and mixtures thereof.
Claim 10
Dependent Claim
31 words
The method of claim 8 wherein said polyisocyanate is reacted with an OH-group-containing product with at least a functionality of 2, wherein the equivalence ratio of OH:NCO is greater than 1:1.2.
Claim 11
Dependent Claim
13 words
The method of claim 9 wherein said equivalence ratio is 1:1.5 to 1:2.
Claim 12
Dependent Claim
19 words
The method of claim 8 wherein said polyisocyanate is an adduct formed by reacting a cycloaliphatic polyisocyanate with water.
Claim 13
Dependent Claim
22 words
The method of claim 8 wherein said polyisocyanates are selected from the group consisting of dimers, trimers and pentamers of said polyisocyanates.
Claim 14
Dependent Claim
14 words
The method of claim 1 wherein said polyurethane lacquers are formulated in a solvent.
Claim 15
Dependent Claim
101 words
A single-component duroplastic lacquer composition which comprises: (1) a polyester having an OH functionality of at least 2, an OH count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta- and para-dicarboxylic acids, 1,2,5-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C 1 14 C 4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 carbon atoms, and (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate groups is 1.0:0.7 to 1.0:1.1.
Claim 16
Dependent Claim
101 words
A single-component duroplastic lacquer composition which comprises: (1) a polyester having an OH functionality of at least 2, an OH count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta- and para-dicarboxylic acids, 1,2,5-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C 1 14 C 4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 carbon atoms, and (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate groups is 1.0:0.7 to 1.0:1.1.
Claim 17
Dependent Claim
18 words
The composition of claim 14 wherein the ratio of OH groups to said blocked isocyanate groups is 1.0:1.0.
Claim 18
Dependent Claim
16 words
The composition of claim 14 wherein said glycol has a chain which contains 5-6 carbon atoms.
Claim 19
Dependent Claim
21 words
The composition of claim 16 wherein said glycol is selected from the group consisting of 1,5-pentanediol, 1,6-hexanediol, 2,2,4-trimethylhexanediol, 2,4,4-trimethylhexanediol and 3-methylpentanediol.
Claim 20
Dependent Claim
16 words
The composition of claim 14 wherein the OH functionality of said polyester is 100 mg KOH/g.
Claim 21
Dependent Claim
19 words
The composition of claim 14 wherein in addition to said glycol, said polyester is derived from a trifunctional alcohol.
Claim 22
Dependent Claim
20 words
The composition of claim 19 wherein said trifunctional alcohol is selected from the group consisting of trimethylolpropane, trimethylolethane and triethanolpropane.
Claim 23
Dependent Claim
25 words
The composition of claim 14 wherein said polyisocyanate is selected from the group consisting of 3,4-hexahydrotoluylenediisocyanate, 2,6-hexahydrotoluylenediisocyanate, o-xylylenediisocyanate, m-xylylenediisocyanate, p-xylylenediisocyanate, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyldiisocyanate, 4,4'-dicyclohexylmethanediisocyanate, and mixtures thereof.
Claim 24
Dependent Claim
31 words
The composition of claim 21 wherein said polyisocyanate is reacted with an OH-group-containing product with at least a functionality of 2, wherein the equivalence ratio of OH:NCO is greater than 1:1.2.
Claim 25
Dependent Claim
13 words
The composition of claim 22 wherein said OH group containing product is water.
Claim 26
Dependent Claim
22 words
The composition of claim 21 wherein said polyisocyanates are selected from the group consisting of dimers, trimers and pentamers of said polyisocyanates.
Claim 27
Dependent Claim
10 words
The composition of claim 14 which further comprises a solvent.
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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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |