US5057589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of modified polysiloxanes, the polysiloxanes thus prepared, their use and the materials thus treated
Assignee: Novartis Corp
•
Filing: 1990-01-30
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Granted: 1991-10-15
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Expires: 2010-01-30
Abstract
Abstract A process is described for the preparation of modified polysiloxanes by reaction of polyvinylsiloxanes with compounds of the formula ##STR1## in which R is H, CH 3 or C 2 H 5 , in which at least one radical R is H, and R f is a perfluoroalkyl radical having 8 to 16 C atoms, in about equivalent amounts, relative to the vinyl groups, at elevated temperature. In addition, the polysiloxanes prepared in this manner are protected. Equally, the use of these polysiloxanes for the oil- and water-repellent treatment of fiber materials is claimed. This treatment makes it possible to achieve very good wash- and cleaning-resistant oil- and water-repellency, using small amounts of fluorine.
Inventors
- 👤 Franz Mosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:33
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/385; C08G77/392; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/657
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
A process for the preparation of modified polysiloxanes, which comprises reacting polyvinylsiloxanes with compounds of the formula (1) ##STR6## in which R is H, CH 3 or C 2 H 5 , in which at least one radical R is H, and R f is a perfluoroalkyl radical having 8 to 16 C atoms, in about equivalent amounts, relative to the vinyl groups, at a temperature from about 40° C., to about 120° C.
Claim 2
Dependent Claim
74 words
A process for the preparation of modified polysiloxanes, which comprises reacting polyvinylsiloxanes with compounds of the formula (1) ##STR6## in which R is H, CH 3 or C 2 H 5 , in which at least one radical R is H, and R f is a perfluoroalkyl radical having 8 to 16 C atoms, in about equivalent amounts, relative to the vinyl groups, at a temperature from about 40° C., to about 120° C.
Claim 3
Dependent Claim
11 words
The process according to claim 1, wherein the polyvinylsiloxonesure predominantly linear.
Claim 4
Dependent Claim
27 words
The process according to claim 2, wherein the predominantly linear polyvinylsiloxanes are of the formula (2) ##STR7## in which n is an integer from 10 to 100.
Claim 5
Dependent Claim
36 words
The process according to claim 1, wherein the reaction is carried out in the presence of organic solvents and/or in an inert gas atmosphere at 40° to 120° C. in the presence of free radical formers.
Claim 6
Dependent Claim
26 words
The process according to claim 1, wherein the reaction is carried out with an excess of polyvinylsiloxane, relative to the vinyl groups, of 30% at most.
Claim 7
Dependent Claim
19 words
The process according to claim 1, wherein R f is a perfluoroalkyl radical having 10 to 12 C atoms.
Claim 8
Dependent Claim
11 words
The process according to claim 1, wherein both Rs are H.
Claim 9
Dependent Claim
11 words
A modified polysiloxane prepared according to the process of claim 1.
Claim 10
Dependent Claim
14 words
A process of claim 3 wherein n is an integer from 30 to 50.
Claim 11
Dependent Claim
24 words
A process of claim 1 wherein the polyvinylsiloxanes and compounds of formula (1) are reacted in the presence of a free radical forming catalyst.
Claim 12
Dependent Claim
14 words
A process of claim 1 wherein the temperature is from 60° to 100° C.
Claim 13
Dependent Claim
20 words
A process of claim 1 wherein the polyvinylsiloxanes and compounds of formula (1) are reacted under an inert gas atmosphere.
References Cited (Backward Citations)
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US3949136A
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US3794672A
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US4171282A
Cited
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Cited
US4633004A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |