US5157074A
Expired / Lapsed
US
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Aqueous compositions containing an at least partially blocked polyisocyanates and a trimerization catalyst and coatings and binders prepared therefrom
Assignee: Bayer Corp
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Filing: 1991-07-23
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Granted: 1992-10-20
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Expires: 2011-07-23
Abstract
Abstract The present invention relates to an aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst. The present invention also relates to coatings or binders prepared by heating the aqueous compositions to evaporate water and initiate trimerization.
Inventors
- 👤 Sidney H. Metzger
- 👤 Robin E. Tirpak
- 👤 James W. Rosthauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:22
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/703; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/326; C08G18/08; C08G18/0804; C08G18/09; C08G18/092; C08G18/28; C08G18/2805; C08G18/2815; C08G18/283; C08G18/30; C08G18/302; C08G18/72; C08G18/80; C08G18/8061; C08G18/807; C08G18/8077
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
60 words
An aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst.
Claim 2
Dependent Claim
60 words
An aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst.
Claim 3
Dependent Claim
78 words
The composition of claim 1 wherein said monofunctional blocking agent comprises an oxime which corresponds to the formula HO--N═C(R.sub.1)(R.sub.2) wherein R 1 and R 2 may be the same or different and represent hydrogen or an alkyl or aralkyl group having 1 to 10 carbon atoms, provided that both R 1 and R 2 are not hydrogen, or the two groups together with the oxime carbon atom may form a cycloaliphatic ring containing 4 to 8 carbon atoms.
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 6
Dependent Claim
26 words
The composition of claim 2 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 7
Dependent Claim
26 words
The composition of claim 3 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 8
Dependent Claim
75 words
An aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst comprising a member selected from the group consisting alkali metal carboxylates and alkali metal hydroxides.
Claim 9
Dependent Claim
75 words
An aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst comprising a member selected from the group consisting alkali metal carboxylates and alkali metal hydroxides.
Claim 10
Dependent Claim
78 words
The composition of claim 7 wherein said monofunctional blocking agent comprises an oxime which corresponds to the formula HO--N═C(R.sub.1)(R.sub.2) wherein R 1 and R 2 may be the same or different and represent hydrogen or an alkyl or aralkyl group having 1 to 10 carbon atoms, provided that both R 1 and R 2 are not hydrogen, or the two groups together with the oxime carbon atom may form a cycloaliphatic ring containing 4 to 8 carbon atoms.
Claim 11
Dependent Claim
24 words
The composition of claim 7 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 12
Dependent Claim
26 words
The composition of claim 7 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 13
Dependent Claim
26 words
The composition of claim 8 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 14
Dependent Claim
26 words
The composition of claim 9 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 15
Dependent Claim
74 words
A process for the preparation of a fiberglass mat which comprises treating fiberglass with an aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst.
Claim 16
Dependent Claim
74 words
A process for the preparation of a fiberglass mat which comprises treating fiberglass with an aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst.
Claim 17
Dependent Claim
78 words
The process of claim 13 wherein said monofunctional blocking agent comprises an oxime which corresponds to the formula HO--N═C(R.sub.1)(R.sub.2) wherein R 1 and R 2 may be the same or different and represent hydrogen or an alkyl or aralkyl group having 1 to 10 carbon atoms, provided that both R 1 and R 2 are not hydrogen, or the two groups together with the oxime carbon atom may form a cycloaliphatic ring containing 4 to 8 carbon atoms.
Claim 18
Dependent Claim
24 words
The process of claim 13 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 19
Dependent Claim
26 words
The process of claim 13 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 20
Dependent Claim
26 words
The process of claim 14 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 21
Dependent Claim
26 words
The process of claim 15 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 22
Dependent Claim
89 words
A process for the preparation of a fiberglass mat which comprises treating fiberglass with an aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst comprising a member selected from the group consisting alkali metal carboxylates and alkali metal hydroxides.
Claim 23
Dependent Claim
89 words
A process for the preparation of a fiberglass mat which comprises treating fiberglass with an aqueous composition containing a) an at least partially blocked, aqueously dispersed polyisocyanate i) having an isocyanate content prior to blocking of at least 12% by weight, based on the weight of the unblocked polyisocyanate and ii) containing at least 2 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups, and b) a trimerization catalyst comprising a member selected from the group consisting alkali metal carboxylates and alkali metal hydroxides.
Claim 24
Dependent Claim
78 words
The process of claim 19 wherein said monofunctional blocking agent comprises an oxime which corresponds to the formula HO--N═C(R.sub.1)(R.sub.2) wherein R 1 and R 2 may be the same or different and represent hydrogen or an alkyl or aralkyl group having 1 to 10 carbon atoms, provided that both R 1 and R 2 are not hydrogen, or the two groups together with the oxime carbon atom may form a cycloaliphatic ring containing 4 to 8 carbon atoms.
Claim 25
Dependent Claim
24 words
The process of claim 19 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 26
Dependent Claim
26 words
The process of claim 19 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 27
Dependent Claim
26 words
The process of claim 20 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
Claim 28
Dependent Claim
26 words
The process of claim 21 wherein said polyisocyanate contains at least 60 equivalent percent, based on the total equivalents of isocyanate groups, of blocked isocyanate groups.
References Cited (Backward Citations)
US4904522A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 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 |
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