US4243756A
Expired / Lapsed
US
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Stable-liquid isocyanurate-modified polyisocyanate compositions
Assignee: BASF Corp
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Filing: 1979-08-27
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Granted: 1981-01-06
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Expires: 1999-08-27
Abstract
Abstract Isocyanurate-modified polyisocyanate compositions prepared by reacting organic polyisocyanates in the presence of catalytic amounts of alkali metal or alkaline earth metal organo-hydroxamates or the metal salt-free acid complex at temperatures from 25° C. to 250° C.
Inventors
- 👤 Moses Cenker
- 👤 Thirumurti Narayan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:15
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A highly stable liquid isocyanurate-modified polyisocyanate composition prepared by heating an organic polyisocyanate at a temperature between 25° C. and 250° C. for a period of from one-half to five hours in the presence of a catalytic amount of an alkali metal or an alkaline earth metal hydroxamate selected from the group consisting of a compound described by the following formula: ##STR3## wherein R is alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, R' is H, alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, M is an alkali metal or an alkaline earth metal, and a compound described by the following formula: ##STR4## wherein R, R' and M are as defined above, x is 1 and y is any number from 0 to 2.
Claim 2
Dependent Claim
136 words
A highly stable liquid isocyanurate-modified polyisocyanate composition prepared by heating an organic polyisocyanate at a temperature between 25° C. and 250° C. for a period of from one-half to five hours in the presence of a catalytic amount of an alkali metal or an alkaline earth metal hydroxamate selected from the group consisting of a compound described by the following formula: ##STR3## wherein R is alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, R' is H, alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, M is an alkali metal or an alkaline earth metal, and a compound described by the following formula: ##STR4## wherein R, R' and M are as defined above, x is 1 and y is any number from 0 to 2.
Claim 3
Dependent Claim
13 words
The polyisocyanate composition of claim 1 wherein said organic polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 4
Dependent Claim
13 words
The polyisocyanate composition of claim 1 wherein said organic polyisocyanate is toluene diisocyanate.
Claim 5
Dependent Claim
28 words
The isocyanurate-modified polyisocyanate composition of claim 1 wherein said alkali metal hydroxamate is selected from the group consisting of potassium acetohydroxamate, potassium octanohydroxamate, potassium decanohydroxamate and potassium benzohydroxamate.
Claim 6
Dependent Claim
27 words
The isocyanurate-modified polyisocyanate composition of claim 1 wherein the concentration of said catalyst is from 0.001 part to 5.0 parts per 100 parts of said organic polyisocyanate.
Claim 7
Dependent Claim
140 words
A process for preparing a highly stable liquid isocyanurate-modified polyisocyanate composition prepared by heating an organic polyisocyanate at a temperature between 25° C. and 250° C. for a period of from one-half to five hours in the presence of a catalytic amount of an alkali metal or an alkaline earth metal hydroxamate selected from the group consisting of a compound described by the following formula: ##STR5## wherein R is alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, R' is H, alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl or benzyl, M is an alkali metal or an alkaline earth metal, and a compound described by the following formula: ##STR6## wherein R, R', and M are as defined above, x is 1 and y is any number from 0 to 2.
Claim 8
Dependent Claim
140 words
A process for preparing a highly stable liquid isocyanurate-modified polyisocyanate composition prepared by heating an organic polyisocyanate at a temperature between 25° C. and 250° C. for a period of from one-half to five hours in the presence of a catalytic amount of an alkali metal or an alkaline earth metal hydroxamate selected from the group consisting of a compound described by the following formula: ##STR5## wherein R is alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl, or benzyl, R' is H, alkyl, alkenyl, or alkynyl containing 1 to 10 carbon atoms, phenyl, tolyl or benzyl, M is an alkali metal or an alkaline earth metal, and a compound described by the following formula: ##STR6## wherein R, R', and M are as defined above, x is 1 and y is any number from 0 to 2.
Claim 9
Dependent Claim
12 words
The process of claim 6 wherein said organic polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 10
Dependent Claim
12 words
The process of claim 6 wherein said organic polyisocyanate is toluene diisocyanate.
Claim 11
Dependent Claim
26 words
The process of claim 6 wherein said alkali metal hydroxamate is selected from the group consisting of potassium acetohydroxamate, potassium octanohydroxamate, potassium decanohydroxamate and potassium benzohydroxamate.
Claim 12
Dependent Claim
25 words
The process of claim 6 wherein the concentration of said catalyst is from 0.001 part to 5.0 parts per 100 parts of said organic polyisocyanate.
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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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |