US5157100A
Expired / Lapsed
US
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Method for extending the pot-life of polyol-polyisocyanate mixtures
Assignee: SHERWIN-WILLIAMS COMPANY A Corp OF OH
•
Filing: 1991-09-20
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Granted: 1992-10-20
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Expires: 2011-09-20
Abstract
Abstract A method for extending the pot-life of a curable composition comprising a mixture of at least one active hydrogen-containing material, such as a polyol or polyamine, and a polyisocyanate, which method comprises incorporating within the mixture a pot-life extending amount of a polyanhydride having an average of at least two anhydride groups per molecule.
Inventors
- 👤 John R. Babjak
- 👤 Thomas W. Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/089; C08G18/28; C08G18/40; C08G18/4009; C08G18/4063; C08G18/62; C08G18/6216; C08G18/625
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
80 words
A method for extending the pot-life of a curable composition comprising a mixture of (i) at least one polyol or polyamine, and (ii) a polyisocyanate, which method comprises incorporating within the mixture a pot-life extending amount of an anhydride-functional polymer having an average of at least two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 2
Independent Claim
80 words
A method for extending the pot-life of a curable composition comprising a mixture of (i) at least one polyol or polyamine, and (ii) a polyisocyanate, which method comprises incorporating within the mixture a pot-life extending amount of an anhydride-functional polymer having an average of at least two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 3
Dependent Claim
49 words
The method of claim 1 wherein the anhydride-functional polymer is the addition polymerization reaction product of: (a) 5 to about 40 weight percent of an ethylenically unsaturated monoanhydride; and (b) 60 to 95 weight percent of at least one other ethylenically unsaturated monomer copolymerizable with the ethylenically unsaturated anhydride.
Claim 4
Dependent Claim
11 words
The method of claim 2 wherein the monoanhydride is maleic anhydride.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein the anhydride-functional polymer is present at a level to provide at least about 0.01 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 6
Dependent Claim
41 words
The method of claim 1 wherein the anhydride-functional polymer is present at a level to provide about 0.01 to about 0.5 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 7
Dependent Claim
42 words
The method of claim 1 wherein the anhydride-functional polymer is present at a level to provide between about 0.05 to about 0.3 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 8
Dependent Claim
77 words
The method of claim 1 wherein the polyisocyanate is present at a level to provide about 0.03 to about 1.5 equivalents of isocyanate for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine, and the anhydride-functional polymer is present at a level to provide between about 0.01 to about 0.5 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 9
Dependent Claim
37 words
The method of claim 1 wherein the total equivalents of anhydride and isocyanate combined total 0.08 to about 1.6 equivalents for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 10
Dependent Claim
110 words
In a substrate coated with a multi-layer decorative and/or protective coating which comprises: (a) a basecoat comprising a pigmented film-forming polymer; and (b) a transparent clearcoat comprising a film-forming polymer applied to the surface of the basecoat composition; the improvement which comprises utilizing as the clearcoat and/or the basecoat a curable composition comprising: (i) at least one polyol or polyamine; and (ii) a polyisocyanate; and (iii) an anhydride-functional polymer having an average of at least about two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 11
Dependent Claim
110 words
In a substrate coated with a multi-layer decorative and/or protective coating which comprises: (a) a basecoat comprising a pigmented film-forming polymer; and (b) a transparent clearcoat comprising a film-forming polymer applied to the surface of the basecoat composition; the improvement which comprises utilizing as the clearcoat and/or the basecoat a curable composition comprising: (i) at least one polyol or polyamine; and (ii) a polyisocyanate; and (iii) an anhydride-functional polymer having an average of at least about two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 12
Dependent Claim
24 words
The coated substrate of claim 9 wherein the polyol comprises a hydroxy-functional polymer having a number average molecular weight of at least about 400.
Claim 13
Dependent Claim
26 words
The coated substrate of claim 10 wherein the curable composition also comprises a polyol or polyamine having a number average molecular weight less than about 400.
Claim 14
Dependent Claim
50 words
The coated substrate of claim 10 wherein the hydroxy-functional polymer comprises the addition polymerization reaction product of: (a) 10 to about 40 weight percent of a hydroxy-functional ethylenically unsaturated monomer, and (b) 60 to about 90 weight percent of at least one ethylenically unsaturated monomer copolymerizable with the hydroxy-functional monomer.
Claim 15
Dependent Claim
50 words
The coated substrate of claim 9 wherein the anhydride-functional polymer is the addition polymerization reaction product of: (a) 5 to about 40 weight percent of an ethylenically unsaturated monoanhydride; and (b) 60 to 95 weight percent of at least one other ethylenically unsaturated monomer copolymerizable with the ethylenically unsaturated anhydride.
Claim 16
Dependent Claim
12 words
The coated substrate of claim 13 wherein the monoanhydride is maleic anhydride.
Claim 17
Dependent Claim
17 words
The coated substrate of claim 9 wherein the anhydride-functional polymer is present in a pot-life extending amount.
Claim 18
Dependent Claim
41 words
The coated substrate of claim 15 wherein the anhydride-functional polymer is present at a level to provide at least about 0.01 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 19
Dependent Claim
42 words
The coated substrate of claim 9 wherein the anhydride-functional polymer is present at a level to provide about 0.01 to about 0.5 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 20
Dependent Claim
42 words
The coated substrate of claim 9 wherein the anhydride-functional polymer is present at a level to provide between about 0.05 and 0.3 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 21
Dependent Claim
78 words
The coated substrate of claim 9 wherein the polyisocyanate is present at a level to provide about 0.03 to about 1.5 equivalents of isocyanate for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine, and the anhydride-functional polymer is present at a level to provide between about 0.01 to about 0.5 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 22
Dependent Claim
38 words
The coated substrate of claim 9 wherein the total equivalents of anhydride and isocyanate combined total 0.8 to about 1.6 equivalents for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 23
Dependent Claim
62 words
A curable composition which comprises: (i) at least one polyol or polyamine; and (ii) a polyisocyanate; and (iii) an anhydride-functional polymer having an average of at least about two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 24
Dependent Claim
62 words
A curable composition which comprises: (i) at least one polyol or polyamine; and (ii) a polyisocyanate; and (iii) an anhydride-functional polymer having an average of at least about two anhydride groups per molecule, wherein the anhydride-functional polymer is the addition polymerization reaction product of at least one unsaturated monomer having anhydride functionality and at least one other ethylenically unsaturated monomer copolymerizable therewith.
Claim 25
Dependent Claim
24 words
The curable composition of claim 21 wherein the polyol comprises a hydroxy-functional polymer having a number average molecular weight of at least about 400.
Claim 26
Dependent Claim
25 words
The composition of claim 22 wherein the curable composition also comprises a polyol or polyamine having a number average molecular weight less than about 400.
Claim 27
Dependent Claim
50 words
The curable composition of claim 22 wherein the hydroxy-functional polymer comprises the addition polymerization reaction product of (a) 10 to about 40 weight percent of a hydroxy-functional ethylenically unsaturated monomer, and (b) 60 to about 90 weight percent of at least one ethylenically unsaturated monomer copolymerizable with the hydroxy-functional monomer.
Claim 28
Dependent Claim
50 words
The curable composition of claim 21 wherein the anhydride-functional polymer is the addition polymerization reaction product of: (a) 5 to about 40 weight percent of an ethylenically unsaturated monoanhydride; and (b) 60 to 95 weight percent of at least one other ethylenically unsaturated monomer copolymerizable with the ethylenically unsaturated anhydride.
Claim 29
Dependent Claim
12 words
The curable composition of claim 25 wherein the monoanhydride is maleic anhydride.
Claim 30
Dependent Claim
17 words
The curable composition of claim 21 wherein the anhydride-functional polymer is present in a pot-life extending amount.
Claim 31
Dependent Claim
41 words
The curable composition of claim 21 wherein the anhydride-functional polymer is present at a level to provide at least about 0.01 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 32
Dependent Claim
42 words
The curable composition of claim 28 wherein the anhydride-functional polymer is present at a level to provide about 0.01 to about 0.3 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 33
Dependent Claim
43 words
The curable composition of claim 28 wherein the anhydride-functional polymer is present at a level to provide between about 0.05 to about 0.3 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 34
Dependent Claim
78 words
The curable composition of claim 28 wherein the polyisocyanate is present at a level to provide about 0.03 to about 1.5 equivalents of isocyanate for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine, and the anhydride-functional polymer is present at a level to provide between about 0.01 to about 0.5 equivalents of anhydride for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
Claim 35
Dependent Claim
38 words
The curable composition of claim 21 wherein the total equivalents of anhydride and isocyanate combined total 0.8 to about 1.6 equivalents for each equivalent of active hydrogen from the hydroxyl or amine groups of the polyol or polyamine.
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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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |