US3620984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane catalysts
Assignee: Bayer AG
•
Filing: 1968-06-25
•
Granted: 1971-11-16
•
Expires: 1988-06-25
Abstract
Abstract Polyurethane foams are prepared in the presence of a compound containing the grouping WHEREIN R1 and R2 are the same or different alkyl, cycloalkyl, alkoxyalkyl, alkenyl or aralkyl radicals or are members of a common cycloaliphatic or heterocyclic structure when the silicon atom is part of a silane or lower polysiloxane grouping; or R1 has the above meaning and R2 denotes an hydroxylalkyl or aminoalkyl group attached to the silicon atom through the oxygen or nitrogen atoms respectively. The invention contemplates complexes or mixtures of these compounds with organic metallic compounds also as catalysts. In addition new activator mixtures containing these catalysts are contemplated.
Inventors
- 👤 Manfred Dahm
- 👤 Hans Niederprum
- 👤 Walter Simmler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/18; C08G18/1883; C08G18/20; C08G18/209
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
17 words
The reaction of claim 1 wherein the catalyst is either an aminosilyl-N-heterocyclic compound or a monosiloxy-N-heterocyclic compound.
Claim 2
Dependent Claim
12 words
The reaction of claim 1 wherein the catalyst is an aminomethyl silane.
Claim 3
Dependent Claim
12 words
The reaction of claim 1 wherein the catalyst is an a,w-bis(dialkylaminomethyl) disiloxane.
Claim 4
Dependent Claim
11 words
The reaction of claim 1 wherein the catalyst has the structure
Claim 5
Dependent Claim
28 words
The reaction of claim 1 wherein the catalyst has the structure wherein R4 is an alkoxy group having from one to 12 carbon atoms or a morpholine group.
Claim 6
Dependent Claim
30 words
The reaction of claim 1 wherein a member selected from the group consisting of a tertiary amine and an organometallic catalyst or mixtures thereof is included in the reaction mixture.
Claim 7
Dependent Claim
20 words
The reaction of claim 1 wherein water is used as a blowing agent in the preparation of a cellular polyurethane.
Claim 8
Dependent Claim
18 words
The reaction of claim 1 wherein said compound having the grouping is premixed with an organic metallic compound.
Claim 9
Dependent Claim
11 words
The reaction of claim 1 wherein the catalyst has the structure
Claim 10
Independent Claim
47 words
The method of preparing cellular polyurethanes which comprises reacting in the presence of a blowing agent an organic polyisocyanate with a compound containing at least two active hydrogen containing groups as determined by the Zerewitinoff method in the presence of a catalytic amount of the catalyst containing
Claim 11
Dependent Claim
11 words
The method of claim 11 wherein the catalyst has the formula
Claim 12
Dependent Claim
11 words
The method of claim 11 wherein the catalyst has the formula
Claim 13
Dependent Claim
23 words
The method of claim 11 wherein the reaction mixture contains a stannous salt of a carboxylic acid having one to 18 carbon atoms.
Claim 14
Dependent Claim
15 words
The method of claim 14 wherein the stannous salt is stannous octoate or stannous oleate.
Claim 15
Dependent Claim
14 words
The method of claim 12 wherein the catalyst contains stannous octoate or stannous oleate.
Claim 16
Dependent Claim
14 words
The method of claim 13 wherein the catalyst contains stannous octoate or stannous oleate.
Claim 17
Dependent Claim
102 words
An activator for the reaction between isocyanates and compounds containing active hydrogen groups reactive with isocyanates which comprises a mixture of an organic metallic compound and a sila-amine having the grouping wherein R1 and R2 are the same or different alkyl, cycloalkyl, alkoxyalkyl, alkenyl or aralkyl radicals or are members of a common cycloaliphatic or heterocyclic structure when the silicon atom is part of a silane or lower polysiloxane grouping; or R1 has the above meaning and R2 denotes an hydroxylalkyl or aminoalkyl group attached to the silicon atom through the oxygen or nitrogen atoms respectively in an alkoxysilyl or aminosilyl linkage.
Claim 18
Dependent Claim
14 words
The activator of claim 18 which comprises a mixture of stannous octoate and 2,2,4-trimethyl-2-sila-morpholine.
References Cited (Backward Citations)
US3194773A
Cited
US3397158A
Cited
US3243475A
Cited
DE1246233B
Cited
US3420782A
Cited
US3170891A
Cited
US3278485A
Cited
DE1229290B
Cited
FR1476500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |