US3867343A
Expired / Lapsed
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Catalysts and use thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1973-10-30
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Granted: 1975-02-18
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Expires: 1993-10-30
Abstract
Abstract New catalysts consisting of a platinum complex and ammonia or derivative thereof, use of such catalysts to confer longer bath lives on compositions containing siloxanes containing SiOH groups and siloxanes containing SiH groups and solventless catalysed compositions.
Inventors
- 👤 William David Garden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:18
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/123; B01J31/124; B01J31/0234; B01J31/0235; B01J31/0237; B01J31/0245; B01J31/0247; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J31/1815; B01J31/1825; B01J31/22; B01J31/2204; B01J31/226; B01J31/2282; B01J31/2291; B01J31/2295; B01J31/24; B01J31/2404; C; C08; C08L; C08L83/00; C08L83/04; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/828; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08G77/12; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
A COMPRISING AN ORGANOHYDROGENPOLYSILOXANE, AN A-W-DIHYDROXYDIORGANOPOLYSILOXANE AND A CATALYST CONSISTING OF AN ORGANIC PLATINUM COMPLEX IN WHICH THE LIGAND OR DONOR GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF GROUPS CONTAINING ARSENIC, PHOSPHORUS, SULPHUR OR NITROGEN AND OLEFINS, SAID-GROUPS BEING CAPABLE OF DONATING ELECTRONS TO FROM A BOND WITH PLATINUM, AND A NITROGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND DERIVATIVES OF AMMONIA IN WHICH THE THREE VALENCES ARE SATISFIED BY BONDING TO AN ATOM SELECTED FROM THE GROUP CONSISTING OF C,H,O,N AND SI PROVIDED THAT NOT MORE THAN ONE O ATOM IS BONDED TO THE AMMONIA N ATOM, THE AMONIA OR DERIVATIVE THEREOF BEING PRESENT IN AMOUNT SUCH THAT THE ATOMIC RATIO OF PT TO THE AMMONIA N ATOM IS FROM 10:1 TO 1:1000 AND THE ORGANIC PLATINUM COMPLEX BEING PRESENT IN AMOUNT FROM 1 X 10-5 TO 1 X 10-2 G. ATOMS PT PER 1 KG OF TOTAL POLYSILOXANES.
Claim 2
Dependent Claim
153 words
A COMPRISING AN ORGANOHYDROGENPOLYSILOXANE, AN A-W-DIHYDROXYDIORGANOPOLYSILOXANE AND A CATALYST CONSISTING OF AN ORGANIC PLATINUM COMPLEX IN WHICH THE LIGAND OR DONOR GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF GROUPS CONTAINING ARSENIC, PHOSPHORUS, SULPHUR OR NITROGEN AND OLEFINS, SAID-GROUPS BEING CAPABLE OF DONATING ELECTRONS TO FROM A BOND WITH PLATINUM, AND A NITROGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND DERIVATIVES OF AMMONIA IN WHICH THE THREE VALENCES ARE SATISFIED BY BONDING TO AN ATOM SELECTED FROM THE GROUP CONSISTING OF C,H,O,N AND SI PROVIDED THAT NOT MORE THAN ONE O ATOM IS BONDED TO THE AMMONIA N ATOM, THE AMONIA OR DERIVATIVE THEREOF BEING PRESENT IN AMOUNT SUCH THAT THE ATOMIC RATIO OF PT TO THE AMMONIA N ATOM IS FROM 10:1 TO 1:1000 AND THE ORGANIC PLATINUM COMPLEX BEING PRESENT IN AMOUNT FROM 1 X 10-5 TO 1 X 10-2 G. ATOMS PT PER 1 KG OF TOTAL POLYSILOXANES.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein the organo groups in either or both of the polysiloxanes are methyl groups.
Claim 4
Dependent Claim
44 words
A composition according to claim 1 wherein an ammonia derivative is used and is a primary, secondary or tertiary amine, a heterocyclic compound, an amide, an azo compound, a hydrazide, a nitrile, a hydroxylamine, an oxime, a nitroso compound, an aminosiloxane or a Silazane.
Claim 5
Dependent Claim
24 words
A composition according to claim 1 wherein the ligand or donor group is a hydrocarbyl arsine, phosphine or sulphide, a nitrile or an amine.
Claim 6
Dependent Claim
28 words
A composition according to claim 4 wherein the ligand or donor group is tripropyl arsine, tributyl phosphine, diethyl sulphide, benzonitrile, ethylene, cyclohexene, hexa-1,5-diene, 2-dimethyl-5-methylhex-3-yne, ammonia, pyridine or ethylenediamine.
Claim 7
Dependent Claim
47 words
A composition according to claim 1 wherein the organic platinum complex is bis-(benzonitrile)dichloroplatinum, bis(tributylphosphine) dibromoplatinum, (tributylphosphine)(triphenylphosphine) diiodoplatinum, bis-(phenyldimethylphosphine) triphenylsilyl chloroplatinum, bis-(phenyldimethylphosphine) diphenylmethylgermanyl chloroplatinum, bis(tripropylphosphine) dichloro- Mu -dichlorodiplatinum, bis-(tripropylphosphine) dichloro- Mu -bis(ethylmercaptyl) diplatinum, bis(diethylsulphide) dichloroplatinum, bis(trimethylphosphine) methylbromoplatinum, bis(tripropylarsine) dichloroplatinum, bis(triphenylphosphine) dimethyl platinum, triethylphosphine ethylene dichloroplatinum or cyclohexene, dichloroplatinum.
Claim 8
Dependent Claim
45 words
A composition according to claim 3 wherein the ammonia derivative is n-propylamine, di-n-propylamine, tri-n-propylamine, morpholine, N,N,N'',N''-tetramethylethylenediamine, pyridine, quinoline, bipyridyl, aminopyridine, aminopyrimidine, iminazole, pyrrole, propionamide, acrylamide, formamide, dimethylformamide, azobenzene, benzhydrazide, acetonitrile, adiponitrile, diethylhydroxyamine, dimethylglyoxime, Alpha -nitroso- Beta -naphthol, p-nitrosodiphenylamine, N-nitrosodiphenylamine, a polymethyl( Beta -dimethylaminoethoxy)siloxane or hexamethyldisilazane.
Claim 9
Dependent Claim
21 words
A composition according to claim 1 wherein the atomic ratio of Pt to the ammonia N-atom is from 1:1 to 1:100.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |