US4026836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isocyanurate foam catalyst
Assignee: Texaco Development Corp
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Filing: 1975-12-29
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Granted: 1977-05-31
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Expires: 1995-12-29
Abstract
Abstract New catalysts for isocyanurate foams are those comprising aminomethacrylate salts. The foams are obtained by the polymerization of an aromatic polyisocyanate, and a polyether or polyester polyol in the presence of a blowing agent and said amino methacrylate salts falling within the following structural formula: ##STR1## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, C-substituted morpholino, N-alkylpiperazino and C-substituted N-alkylpiperazino, and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium. The novel foams are useful in preparing rigid, flexible, semi-rigid, or semi-flexible materials such as panels, slabs or sprayed foam surfaces.
Inventors
- 👤 Robert L. Zimmerman
- 👤 Edward E. McEntire
- 👤 Howard P. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/1866; C08G18/22; C08G18/225; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2115/00; C08G2115/02; Y; Y10; Y10S; Y10S521/00; Y10S521/902
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A cellular polymer containing recurring isocyanurate and urethane linkages, which polymer comprises the reaction product obtained by bringing together in the presence of a blowing agent, a polyether or polyester polyol and an aromatic polyisocyanate utilizing as an isocyanurate group formation catalyst an aminomethacrylate salt having the following structural formula: ##STR4## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, C-substituted morpholino N-alkylpiperazino, and C-substituted N-alkylpiperazino and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium.
Claim 2
Dependent Claim
105 words
A cellular polymer containing recurring isocyanurate and urethane linkages, which polymer comprises the reaction product obtained by bringing together in the presence of a blowing agent, a polyether or polyester polyol and an aromatic polyisocyanate utilizing as an isocyanurate group formation catalyst an aminomethacrylate salt having the following structural formula: ##STR4## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, C-substituted morpholino N-alkylpiperazino, and C-substituted N-alkylpiperazino and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium.
Claim 3
Dependent Claim
14 words
The polymer of claim 1 wherein said polyisocyanate is a methylene-bridged polyphenyl polyisocyanate mixture.
Claim 4
Dependent Claim
9 words
The polymer of claim 1 where R is hydroxyethyl.
Claim 5
Dependent Claim
18 words
The polymer of claim 1 where each R is taken together with the adjacent nitrogen and is morpholino.
Claim 6
Dependent Claim
19 words
The polymer of claim 1 where each R is taken together with the adjacent nitrogen atom and is N-methylpiperazino.
Claim 7
Dependent Claim
118 words
In a process for preparing a cellular polymer containing recurring isocyanurate and urethane linkages, which polymer comprises the reaction product obtained by bringing together in the presence of a blowing agent, a polyether or polyester polyol, and aromatic polyisocyanate, and an isocyanurate group formation catalyst, the improvement which comprises utilizing as said isocyanurate catalyst an aminomethacrylate salt represented by the following structural formula: ##STR5## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, substituted morpholino, N-alkylpiperazino, and C-substituted N-alkylpiperazino and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium.
Claim 8
Dependent Claim
118 words
In a process for preparing a cellular polymer containing recurring isocyanurate and urethane linkages, which polymer comprises the reaction product obtained by bringing together in the presence of a blowing agent, a polyether or polyester polyol, and aromatic polyisocyanate, and an isocyanurate group formation catalyst, the improvement which comprises utilizing as said isocyanurate catalyst an aminomethacrylate salt represented by the following structural formula: ##STR5## where the radicals represented by R when taken singly are lower alkyl, and hydroxy lower alkyl, and when taken together with the adjacent nitrogen atom are selected from the group consisting of morpholino, substituted morpholino, N-alkylpiperazino, and C-substituted N-alkylpiperazino and M is selected from the group consisting of sodium, potassium, cesium, lithium and rubidium.
Claim 9
Dependent Claim
14 words
The process of claim 6 wherein said polyisocyanate is a methylene-bridged polyphenyl polyisocyanate mixture.
Claim 10
Dependent Claim
9 words
The process of claim 6 wherein R is hydroxyethyl.
Claim 11
Dependent Claim
19 words
The method of claim 6 wherein each R is taken together with the adjacent nitrogen atom and is morpholino.
Claim 12
Dependent Claim
19 words
The method of claim 6 wherein each R is taken together with the adjacent nitrogen atom and is N-methylpiperazino.
References Cited (Backward Citations)
US3817939A
Cited
US3903018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |