US3970600A
Expired / Lapsed
US
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Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups
Assignee: BASF SE
•
Filing: 1975-01-16
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Granted: 1976-07-20
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Expires: 1995-01-16
Abstract
Abstract Stable, liquid, homogeneous solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups in monomeric diisocyanates and/or polyisocyanates which are free from amide, acylurea and/or isocyanurate groups, are obtained by reacting polybasic carboxylic acids with diisocyanates and/or polyisocyanates to give diisocyanates and/or polyisocyanates containing amide groups and/or acylurea groups, converting the diisocyanates and/or polyisocyanates containing amide and/or acylurea groups by trimerization and, optionally, polymerization, into isocyanurate-polyisocyanates containing amide and/or acylurea groups, and mixing the products with monomeric diisocyanates and/or polyisocyanates.
Inventors
- 👤 Georg Falkenstein
- 👤 Richard Palm
- 👤 Dietrich Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:40
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/34; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, which solutions contain: A. from 5 to 40% by weight, based on the total weight of solution, of an isocyanurate-polyisocyanate with amide and/or acylurea groups, containing from 26 to 0.25% by weight of amide and/or acylurea groups, from 29 to 5% by weight of isocyanurate groups and from 40 to 20% by weight of free isocyanate groups, in each case based on the weight of the isocyanurate-polyisocyanate containing amide and/or acylurea groups, and B. from 95 to 60% by weight, based on the total weight of the solution, of a monomeric diisocyanate and/or polyisocyanate which is free from isocyanurate groups.
Claim 2
Dependent Claim
110 words
Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, which solutions contain: A. from 5 to 40% by weight, based on the total weight of solution, of an isocyanurate-polyisocyanate with amide and/or acylurea groups, containing from 26 to 0.25% by weight of amide and/or acylurea groups, from 29 to 5% by weight of isocyanurate groups and from 40 to 20% by weight of free isocyanate groups, in each case based on the weight of the isocyanurate-polyisocyanate containing amide and/or acylurea groups, and B. from 95 to 60% by weight, based on the total weight of the solution, of a monomeric diisocyanate and/or polyisocyanate which is free from isocyanurate groups.
Claim 3
Dependent Claim
111 words
Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, which solutions consist of: A. from 5 to 40% by weight, based on the total weight of solution, of an isocyanurate-polyisocyanate with amide and/or acylurea groups, containing from 26 to 0.25% by weight of amide and/or acylurea groups, from 29 to 5% by weight of isocyanurate groups and from 40 to 20% by weight of free isocyanate groups, in each case based on the weight of the isocyanurate-polyisocyanate containing amide and/or acylurea groups, and B. from 95 to 60% by weight, based on the total weight of the solution, of a monomeric diisocyanate and/or polyisocyanate which is free from isocyanurate groups.
Claim 4
Dependent Claim
111 words
Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, which solutions consist of: A. from 5 to 40% by weight, based on the total weight of solution, of an isocyanurate-polyisocyanate with amide and/or acylurea groups, containing from 26 to 0.25% by weight of amide and/or acylurea groups, from 29 to 5% by weight of isocyanurate groups and from 40 to 20% by weight of free isocyanate groups, in each case based on the weight of the isocyanurate-polyisocyanate containing amide and/or acylurea groups, and B. from 95 to 60% by weight, based on the total weight of the solution, of a monomeric diisocyanate and/or polyisocyanate which is free from isocyanurate groups.
Claim 5
Dependent Claim
115 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, wherein monomeric organic diisocyanates and/or polyisocyanates are reacted in a first step with aliphatic and/or aromatic dicarboxylic acids of 4 to 20 carbon atoms used in such amounts that the ratio of NCO to COOH groups is from 200:1 to 2:1, the resulting diisocyanates and/or polyisocyanates containing amide and/or acylurea groups are partially trimerized and/or polymerized in a second step in the presence of a trimerization catalyst and after deactivation of the trimerization catalyst the resulting isocyanurate-polyisocyanates containing amide and/or acylurea groups are diluted in a third step with monomeric diisocyanates and/or polyisocyanates which are free from isocyanurate groups.
Claim 6
Dependent Claim
115 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, wherein monomeric organic diisocyanates and/or polyisocyanates are reacted in a first step with aliphatic and/or aromatic dicarboxylic acids of 4 to 20 carbon atoms used in such amounts that the ratio of NCO to COOH groups is from 200:1 to 2:1, the resulting diisocyanates and/or polyisocyanates containing amide and/or acylurea groups are partially trimerized and/or polymerized in a second step in the presence of a trimerization catalyst and after deactivation of the trimerization catalyst the resulting isocyanurate-polyisocyanates containing amide and/or acylurea groups are diluted in a third step with monomeric diisocyanates and/or polyisocyanates which are free from isocyanurate groups.
Claim 7
Dependent Claim
32 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, as claimed in claim 3, wherein the isocyanates used are aliphatic and/or aromatic diisocyanates and/or polyisocyanates.
Claim 8
Dependent Claim
42 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, as claimed in claim 4, wherein the aromatic diisocyanates and/or polyisocyanates used are 2,4-toluylenediisocyanate, 2,6-toluylenediisocyanate, 4,4'- or 2,4'-diphenylmethane-diisocyanate and polyphenyl-polymethylene-polyisocyanates, or mixtures of the said compounds.
Claim 9
Dependent Claim
46 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, as claimed in claim 3, wherein the diisocyanates and/or polyisocyanates, containing amide and/or acylurea groups, which are converted to isocyanurates, are prepared in the presence of aliphatic and/or aromatic monoisocyantes.
Claim 10
Dependent Claim
45 words
A process for the production of stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups, as claimed in claim 6, wherein said aliphatic and/or aromatic monoisocyanates are selected from the group consisting of methyl isocyanate, ethyl isocyanate, propyl isocyanate, pentyl isocyanate and phenyl isocyanate.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |