US4400327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of siloxylated metal-containing catalysts
Assignee: Witco Corp
•
Filing: 1981-12-30
•
Granted: 1983-08-23
•
Expires: 2001-12-30
Abstract
Abstract Reaction of silylamine with a metallic carboxylate produces siloxylated organometallic compounds with M-O-Si bonds. These siloxylated organometallic compounds are useful catalysts in the preparation of urethane foams and elastomers, especially when prepared in situ with the urethane foam or elastomer reactants.
Inventors
- 👤 Baskent Feyyaz O
- 👤 James D. Reedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836; C07F7/22; C07F7/2224; C07F7/24; C07F7/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A process for preparing a siloxylated organometallic catalyst which comprises reacting below 100° C. a silylamine of the formula: R.sub.4-n Si(NR'R").sub.n wherein R is a alkyl, alkaryl, alkenyl, alkynyl, aryl cycloaliphatic, or heteroatom substituted aliphatic siloxy or substituted siloxy group; R' and R" are individually hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, groups provided R' and R" cannot both be hydrogen; and n is one to four inclusive, with a metallic carboxylate of the formula: M(OCOR'").sub.x R"".sub.y wherein M is a metal with an oxidation state, R'" and R"" are individually an alkyl, alkaryl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, group; x is at least one but no more than the oxidation state of M and y is equal to the oxidation state of M minus x, and M is greater than or equal to two.
Claim 2
Dependent Claim
141 words
A process for preparing a siloxylated organometallic catalyst which comprises reacting below 100° C. a silylamine of the formula: R.sub.4-n Si(NR'R").sub.n wherein R is a alkyl, alkaryl, alkenyl, alkynyl, aryl cycloaliphatic, or heteroatom substituted aliphatic siloxy or substituted siloxy group; R' and R" are individually hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, groups provided R' and R" cannot both be hydrogen; and n is one to four inclusive, with a metallic carboxylate of the formula: M(OCOR'").sub.x R"".sub.y wherein M is a metal with an oxidation state, R'" and R"" are individually an alkyl, alkaryl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, group; x is at least one but no more than the oxidation state of M and y is equal to the oxidation state of M minus x, and M is greater than or equal to two.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein the R, R' and R" groups of the silylamine employed are alkyl groups containing no more than twenty-four carbon atoms each.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein the R, R' and R" groups of the silylamine employed contain no more than twelve carbons each.
Claim 5
Dependent Claim
20 words
The process of claim 3 where in the R, R' and R" groups of the silylamine employed are methyl groups.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the value of n is equal to one.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein the R'" and R"" groups of the metallic carboxylate are alkyl groups containing no more than twenty-four carbon atoms each.
Claim 8
Dependent Claim
22 words
The process of claim 6 wherein the R'" and R"" groups of the metallic carboxylate contain no more than twelve carbon atoms.
Claim 9
Dependent Claim
35 words
The process of claim 1 wherein M is a metal selected from the group consisting of the metals of group IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIII, gallium, indium, thallium, germanium, tin and lead.
Claim 10
Dependent Claim
21 words
The process of claim 8 wherein M is selected from the group consisting of iron, tin, lead, titanium, cerium and mercury.
References Cited (Backward Citations)
US2872168A
Cited
US3927052A
Cited
US3681266A
Cited
US3993606A
Cited
US3919276A
Cited
US4038221A
Cited
US4152343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |