US3865784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized organosilicon polymers
Assignee: Union Carbide Corp
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Filing: 1973-12-05
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Granted: 1975-02-11
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Expires: 1993-12-05
Abstract
Abstract Process for preparing stabilized iron-containing diorganopolysiloxane polymers and the stabilized polymers produced thereby which are useful in the field of high temperature service.
Inventors
- 👤 Robert Schwenn Neale
- 👤 Arthur Noah Pines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:35
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
113 words
A PROCESS FOR PREPARING A STABILIZED IRON-CONTAINING DIORGANOPOLYSILOXANE COMPOUND WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF (1) A DIORGANOPOLYSILOXANE FLUID CONSISTING ESSENTIALLY OF SILOXY UNITS SELECTED FROM THE GROUP CONSISTING OF DIMETHYLSILOXY, DIPHENYLSILOXY, METHYLPHENYLSILOXY, METHYLHYDROXYSILOXY, METHYLVINYLSILOXY, TRIMETHYLSILOXY AND DIMETHYLHYDROXYSILOXY UNITS AND (2) AN IRON CARBONYL COMPOUND IN AN AMOUNT SUFFICIENT TO PROVIDE FROM 20 PARTS BY WEIGHT OF IRON TO 10,000 PARTS BY WEIGHT OF IRON IN THE STBILIZED IRON-CONTAINING DIORGANOPOLYSILOXANE PRODUCT BASED ON A MILLION PARTS OF WEIGHT OF SAID DIORGANOPOLYSILOXANE FLUID AND WHEREIN SAID CARBONYL IS SELECTED FROM THE GROUP CONSISTING OF FE(CO)5, FE2(CO)9, FE3(CO)12 AND MIXTURES THEREOF, AT A TEMPERATURE OF 120*C TO 350*C. IN THE PRESENCE OF OXYGEN.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PREPARING A STABILIZED IRON-CONTAINING DIORGANOPOLYSILOXANE COMPOUND WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF (1) A DIORGANOPOLYSILOXANE FLUID CONSISTING ESSENTIALLY OF SILOXY UNITS SELECTED FROM THE GROUP CONSISTING OF DIMETHYLSILOXY, DIPHENYLSILOXY, METHYLPHENYLSILOXY, METHYLHYDROXYSILOXY, METHYLVINYLSILOXY, TRIMETHYLSILOXY AND DIMETHYLHYDROXYSILOXY UNITS AND (2) AN IRON CARBONYL COMPOUND IN AN AMOUNT SUFFICIENT TO PROVIDE FROM 20 PARTS BY WEIGHT OF IRON TO 10,000 PARTS BY WEIGHT OF IRON IN THE STBILIZED IRON-CONTAINING DIORGANOPOLYSILOXANE PRODUCT BASED ON A MILLION PARTS OF WEIGHT OF SAID DIORGANOPOLYSILOXANE FLUID AND WHEREIN SAID CARBONYL IS SELECTED FROM THE GROUP CONSISTING OF FE(CO)5, FE2(CO)9, FE3(CO)12 AND MIXTURES THEREOF, AT A TEMPERATURE OF 120*C TO 350*C. IN THE PRESENCE OF OXYGEN.
Claim 3
Dependent Claim
63 words
A process as defined in claim 1, wherein R is selected from the group consisting of alkyl, phenyl and vinyl radicals, wherein the iron carbonyl compound is Fe(CO)5 in an amount sufficient to provide from 50 parts by weight of iron to 400 parts by weight of iron in the stabilized iron-containing diorganopolysiloxane product based on a million parts by weight of said
Claim 4
Dependent Claim
24 words
A process as defined in claim 2 wherein the diorganopolysiloxane fluid has a viscosity of about 50 to about 4000 centistokes at about 25*C.
Claim 5
Dependent Claim
19 words
A process as defined in claim 3 wherein the air is passed over the surface of the diorganopolysiloxane fluid.
Claim 6
Dependent Claim
63 words
A process as defined in claim 3, wherein the diorganopolysiloxane fluid is selected from the group consisting of trimethylsiloxy end-block dimethylpolysiloxane, dimethylhydroxysiloxy end-block dimethylpolysiloxane, and mixtures thereof and wherein the amount of iron pentacarbonyl is sufficient to provide from 100 parts by weight of iron to 250 parts by weight of iron based on a million parts by weight of said diorganopolysiloxane fluid.
Claim 7
Dependent Claim
37 words
A process as defined in claim 1 wherein the diorganopolysiloxane fluid is a heat curable diorganopolysiloxane gum, wherein the mixture contains filler as an additional ingredient and wherein the stabilized iron-containing diorganopolysiloxane product is a silicone elastomer.
Claim 8
Dependent Claim
39 words
A process as defined in claim 5, wherein the diorganopolysiloxane fluid contains at least 0.8 parts by weight of hydroxy groups attached to a silicon atom per one part by weight of iron in the stabilized iron-containing diorganopolysiloxane product.
Claim 9
Dependent Claim
18 words
A process as defined in claim 5, wherein the reaction temperature ranges from about 150*C. to about 200*C.
Claim 10
Dependent Claim
17 words
A process as defined in claim 5, wherein the reaction temperature ranges from about 275*C. to 325*C.
Claim 11
Dependent Claim
17 words
A process as defined in claim 8, wherein the diorganopolysiloxane fluid consists essentially of trimethylsiloxy end-blocked dimethylpolysiloxane.
Claim 12
Dependent Claim
20 words
A process as defined in claim 10, wherein air is passed over the surface of the trimethylsiloxy end-blocked dimethylpolysiloxane fluid.
Claim 13
Dependent Claim
14 words
A process as defined in claim 11 wherein the reaction temperature is about 150*C.
Claim 14
Dependent Claim
40 words
A process as defined in claim 12, wherein the trimethylsiloxy end-blocked dimethylpolysiloxane fluid contains about 1 part by weight of hydroxy groups attached to a silicon atom per one part by weight of iron in the stabilized iron-containing diorganopolysiloxane product.
Claim 15
Dependent Claim
17 words
A process as defined in claim 1 wherein the process is carried out under substantially anyhydrous conditions.
Claim 16
Dependent Claim
12 words
A stabilized iron-containing diorganopolysiloxane product according to the process of claim 1.
Claim 17
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 2.
Claim 18
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 3.
Claim 19
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 4.
Claim 20
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 5.
Claim 21
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 6.
Claim 22
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 7.
Claim 23
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 8.
Claim 24
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 9.
Claim 25
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 10.
Claim 26
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 11.
Claim 27
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 12.
Claim 28
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 13.
Claim 29
Dependent Claim
13 words
A stabilized iron-containing diorganopolysiloxane product produced according to the process of claim 14.
References Cited (Backward Citations)
US3261802A
Cited
US3352781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |