US3887599A
Expired / Lapsed
US
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Complexes containing sulphur
Assignee: Dow Silicones UK Ltd
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Filing: 1973-10-29
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Granted: 1975-06-03
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Expires: 1993-10-29
Abstract
Abstract Silicon-containing platinum (II) complexes represented by the general formula
Inventors
- 👤 Grish Chandra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:56
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2204; B01J31/226; B01J31/1608; C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0086; C07F15/0093; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/828
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
Platinum (II) complexes represented by the formula PtX2(SR''R'''')2 in which X represents Cl, Br or I, R'' represents the R3SiQ-group in which R represents an alkyl, aryl, aralkyl or alkaryl radical having from 1 to 18 inclusive carbon atoms and Q represents a divalent aliphatic hydrocarbon radical having from 1 to 6 carbon atoms inclusive and R'''' represents an alkyl, aryl, aralkyl or alkaryl radical having from 1 to 18 inclusive carbon atoms or the R3SiQ- group in which R and Q are as hereinabove defined.
Claim 2
Dependent Claim
86 words
Platinum (II) complexes represented by the formula PtX2(SR''R'''')2 in which X represents Cl, Br or I, R'' represents the R3SiQ-group in which R represents an alkyl, aryl, aralkyl or alkaryl radical having from 1 to 18 inclusive carbon atoms and Q represents a divalent aliphatic hydrocarbon radical having from 1 to 6 carbon atoms inclusive and R'''' represents an alkyl, aryl, aralkyl or alkaryl radical having from 1 to 18 inclusive carbon atoms or the R3SiQ- group in which R and Q are as hereinabove defined.
Claim 3
Dependent Claim
7 words
PLATINUM (II) COMPLEXES REPRESENTED BY THE FORMULA
Claim 4
Dependent Claim
7 words
PLATINUM (II) COMPLEXES REPRESENTED BY THE FORMULA
Claim 5
Dependent Claim
19 words
Platinum (II) complexes as claimed in claim 1 wherein R and R'''' each have less than 8 carbon atoms.
Claim 6
Dependent Claim
12 words
A complex having the formula ((Me3SiCH2)2S)2PtCl2 wherein Me represents the methyl radical.
Claim 7
Dependent Claim
12 words
A complex having the formula ((Me3SiCH2)2S)2PtCl2 wherein Me represents the methyl radical.
Claim 8
Dependent Claim
12 words
A complex having the formula (Me3SiCH2SCH2CH3)2PtCl2 wherein Me represents the methyl radical.
Claim 9
Dependent Claim
12 words
A complex having the formula (Me3SiCH2SCH2CH3)2PtCl2 wherein Me represents the methyl radical.
Claim 10
Dependent Claim
17 words
A complex having the formula (Me3SiCH2SBu)2PtCl2 wherein Me and Bu represent the methyl and n-butyl radicals respectively.
Claim 11
Dependent Claim
17 words
A complex having the formula (Me3SiCH2SBu)2PtCl2 wherein Me and Bu represent the methyl and n-butyl radicals respectively.
Claim 12
Dependent Claim
44 words
A process for preparing a platinum (II) complex which comprises reacting together in an aqueous meduim (i) an alkali metal chloroplatinite or ammonium chloroplatinite and (ii) a silicon-containing sulphide having the general formula R''R''''S, wherein R'' and R'''' are as defined in claim 1.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |