US4066580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of polyisocyanurate foams
Assignee: BASF Corp
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Filing: 1976-06-07
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Granted: 1978-01-03
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Expires: 1996-06-07
Abstract
Abstract A process for the manufacture of urethane group containing polyisocyanurate foams produced by mixing polyisocyanates and polyols and (if required) frothing agents, auxiliaries and additives in the presence of a co-catalyst system which consists of a 1,3,5-tris(N,N-dialkylaminoalkyl)-s-hexahydrotriazine and an organic mono- or polycarboxylic acid, a polyesterol with an acid number greater than 4 or a mono-ester of polycarboxylic acid.
Inventors
- 👤 Georg Falkenstein
- 👤 Gerhard Fahrbach
- 👤 Harald Wulff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/46; C08G18/4615; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2036; C08G18/4263; C08G2115/00; C08G2115/02; Y; Y10; Y10S; Y10S521/00; Y10S521/902; Y10S521/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
In a process for the manufacture of polyisocyanurate foams containing urethane groups by reaction of organic polyisocyanates and polyols in the presence of a catalyst system with or without further components such as frothing agents, auxiliaries and additives, wherein the improvement consists of using catalytic amounts of a co-catalyst comprising 1,3,5-tris-(N,N-dialkylaminoalkyl)-s-hexahydrotriazine, and an organic mono- or polycarboxylic acid with 1 to 14 carbon atoms, or a monoester of the polycarboxylic acids; wherein the co-catalyst system is used at a mole ratio of 1,3,5-tris-(N,N-dialkylaminoalkyl)-s-hexahydrotriazine to organic mono- or polycarboxylic acids or monoesters of the polycarboxylic acids of 30:1 to 0.7:1.
Claim 2
Dependent Claim
99 words
In a process for the manufacture of polyisocyanurate foams containing urethane groups by reaction of organic polyisocyanates and polyols in the presence of a catalyst system with or without further components such as frothing agents, auxiliaries and additives, wherein the improvement consists of using catalytic amounts of a co-catalyst comprising 1,3,5-tris-(N,N-dialkylaminoalkyl)-s-hexahydrotriazine, and an organic mono- or polycarboxylic acid with 1 to 14 carbon atoms, or a monoester of the polycarboxylic acids; wherein the co-catalyst system is used at a mole ratio of 1,3,5-tris-(N,N-dialkylaminoalkyl)-s-hexahydrotriazine to organic mono- or polycarboxylic acids or monoesters of the polycarboxylic acids of 30:1 to 0.7:1.
Claim 3
Dependent Claim
31 words
A process as defined in claim 1, in which the co-catalyst system is used at a weight ratio of 0.5 to 15 parts co-catalyst system per 100 parts of organic polyisocyanate.
Claim 4
Dependent Claim
15 words
A process as defined in claim 1, in which 1,3,5-tris-(N,N-dimethyl-3-aminopropyl)-s-hexahydrotriazine is used as the 1,3,5-tris(N,N-dialkylaminoalkyl)-s-hexahydrotriazine.
Claim 5
Dependent Claim
44 words
A process as defined in claim 1, in which the monocarboxylic acids are acetic acid, methyl-ethylcapronic acid, octenic acid, 2-ethylhexoic acid, benzoic acid and p-dimethylaminobenzoic acid, and the polycarboxylic acid is adipic acid, and the monoester of the polycarboxylic acid is phthalic-2-ethyl-hexyl-monoester or trimellitic-mono-2-ethyl-hexyl-monoester.
Claim 6
Dependent Claim
51 words
A process as defined in claim 1, in which an organic polyisocyanate of the formula R(NCO).sub.n is used, with R standing for a multivalent aliphatic, aromatic or alkyl-aromatic organic radical and n denotes a whole number, the value of which corresponds with the valency of R and is at least 2.
Claim 7
Dependent Claim
48 words
A process as defined in claim 1, in which polyetherols with molecular weights of 300 to 10,000 and hydroxyl numbers of 30 to 800 and/or polyesterols with molecular weights of 500 to 5,000 and hydroxyl numbers of 30 to 500 or mixtures of these are used as polyols.
Claim 8
Dependent Claim
104 words
A process as defined in claim 1, in which condensation products of aliphatic dicarboxylic acids with 4 to 12 carbon atoms and a diol mixture of substituted and/or ether group containing aliphatic diols with 2 to 18 carbon atoms and halogen substituted aromatic diols of the formula ##STR2## are used as said polyols, wherein A stands for a halogen substituted phenylene, naphthalene, or diphenylene radical, R denotes a substituted aliphatic radical with 1 to 4 carbon atoms, to which at least one hydroxyl group is bonded and R' stands for a hydrogen atom or a substituted aliphatic radical with 1 to 4 carbon atoms.
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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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |