US4414376A
Expired / Lapsed
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Rhodium- and iridium-nitrogen complex catalysts
Assignee: 3M Co
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Filing: 1981-03-20
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Granted: 1983-11-08
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Expires: 2001-03-20
Abstract
Abstract A process for addition curing organosilicone compositions using as catalysts rhodium- or iridium-nitrogen complex compounds having the formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexex, (L) [RhX(CO) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single or fused heterocyclic ligand comprising at least one five- or six-membered ring, said ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and X is Cl, Br, I, or CN. Preparation of the novel catalysts is disclosed. The cured compositions are useful as molded articles, such as gaskets, O-rings, and tubing.
Inventors
- 👤 Allen R. Siedle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C07; C07F; C07F15/00; C07F15/0006; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14; C08L; C08L83/00; C08L83/04; C08G77/06; C08G77/08; C08G77/12; C08G77/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
In a process for hydrosilation comprising the steps of: causing a reaction to occur between a silicon-containing compound having at least one silicon-hydrogen bond and a compound having at least one pair of aliphatic unsaturated carbon atoms linked by multiple bonds in the presence of a catalytically effective amount of a rhodium- or iridium-nitrogen complex catalyst, optionally heating the resulting mixture, and recovering the resulting product, the improvement comprising using as said catalyst a catalyst selected from the classes of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(CO) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single or fused heterocyclic ligand comprising at least one five- or six-member ring, said ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and, X is independently Cl, Br, I, or CN.
Claim 2
Dependent Claim
164 words
In a process for hydrosilation comprising the steps of: causing a reaction to occur between a silicon-containing compound having at least one silicon-hydrogen bond and a compound having at least one pair of aliphatic unsaturated carbon atoms linked by multiple bonds in the presence of a catalytically effective amount of a rhodium- or iridium-nitrogen complex catalyst, optionally heating the resulting mixture, and recovering the resulting product, the improvement comprising using as said catalyst a catalyst selected from the classes of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(CO) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single or fused heterocyclic ligand comprising at least one five- or six-member ring, said ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and, X is independently Cl, Br, I, or CN.
Claim 3
Dependent Claim
29 words
The process according to claim 1 wherein Y is a mono- or di-olefin or an alkyl- or aryl-substituted mono- or di-olefin having up to 25 carbon atoms, or CO.
Claim 4
Dependent Claim
19 words
The process according to claim 2 wherein Y is selected from ethylene, propylene, butylene, styrene, 1,5-cyclooctadiene, bicyclo[2.2.1]heptadiene, and 1,4-cyclohexadiene.
Claim 5
Dependent Claim
13 words
The process according to claim 1 wherein L is a cyclic dinitrogen compound.
Claim 6
Dependent Claim
12 words
The process according to claim 4 wherein L represents a quinoxaline compound.
Claim 7
Dependent Claim
12 words
The process according to claim 4 wherein L represents a phenazine compound.
Claim 8
Dependent Claim
12 words
The process according to claim 4 wherein L represents a pyrazine compound.
Claim 9
Dependent Claim
156 words
In a process for hydrosilation which comprises mixing an addition curable organosilicone composition and a compound having at least one pair of aliphatic unsaturated carbon atoms linked to each other by multiple bonds with a catalytically effective amount of a rhodium- or iridium-nitrogen complex catalyst, optionally heating the resulting mixture, and recovering the resulting product, the improvement comprising using as said catalyst a catalyst selected from the classes of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(CO) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single five-membered ring or fused heterocyclic ligand comprising at least one five- or six-membered ring ligand, said ring ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and X is Cl, Br, I, or CN.
Claim 10
Dependent Claim
156 words
In a process for hydrosilation which comprises mixing an addition curable organosilicone composition and a compound having at least one pair of aliphatic unsaturated carbon atoms linked to each other by multiple bonds with a catalytically effective amount of a rhodium- or iridium-nitrogen complex catalyst, optionally heating the resulting mixture, and recovering the resulting product, the improvement comprising using as said catalyst a catalyst selected from the classes of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(CO) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single five-membered ring or fused heterocyclic ligand comprising at least one five- or six-membered ring ligand, said ring ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and X is Cl, Br, I, or CN.
Claim 11
Dependent Claim
139 words
An addition curable composition of matter comprising: a. an organosilicone compound having more than one silicon-hydrogen bond, b. an organic silicon-containing compound having more than one pair of aliphatic unsaturated carbon atoms linked by multiple bonds, and c. a catalytic amount of at least one complex compound selected from the class of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(C)) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single five-membered ring or fused heterocyclic ligand comprising at least one five- or six-membered ring ligand, said ring ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and X is Cl, Br, I, or CN.
Claim 12
Dependent Claim
139 words
An addition curable composition of matter comprising: a. an organosilicone compound having more than one silicon-hydrogen bond, b. an organic silicon-containing compound having more than one pair of aliphatic unsaturated carbon atoms linked by multiple bonds, and c. a catalytic amount of at least one complex compound selected from the class of complex compounds having the general formulae: (a) monometallic complexes, (L)MX(Y) 2 , and (b) bimetallic complexes, (L)[RhX(C)) 2 ] 2 , wherein: M is a rhodium or iridium metal atom, L is a single five-membered ring or fused heterocyclic ligand comprising at least one five- or six-membered ring ligand, said ring ligand having 2 to 4 ring nitrogen atoms in the same ring, Y is an uncharged ligand that fills one or two coordination positions of the metal atom, and X is Cl, Br, I, or CN.
Claim 13
Dependent Claim
29 words
The composition according to claim 9 wherein said organic silicon-containing compound is a polysiloxane compound having more than one pair of aliphatic unsaturated carbon atoms linked by multiple bonds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |