Patent US4555419A successfully refreshed from Google Patents.
US4555419A
Expired / Lapsed
US
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Method of impregnating textile materials made from organic fibers
Assignee: Wacker Chemie AG
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Filing: 1984-07-02
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Granted: 1985-11-26
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Expires: 2004-07-02
Abstract
Abstract A method for impregnating textile materials made from organic fibers which comprises impregnating the textile materials with a composition containing a crosslinkable diorganopolysiloxane, an organopolysiloxane containing at least 3 Si-bonded hydrogen atoms per molecule, a crosslinking catalyst, and an organo(poly)siloxane containing 1 or 2 Si-bonded hydrogen atoms and 2 to 8 silicon atoms per molecule, in which the composition is free of a filler having a surface area greater than 50 g/m 2 in an amount greater than 1 weight percent based on the weight of the organosilicon compounds and thereafter crosslinking the crosslinkable diorganopolysiloxane to form a coating thereon.
Inventors
- 👤 Karl Huhn
- 👤 Gunter von Au
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6436
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A method for impregnating textile materials made from organic fibers which comprises impregnating the textile materials with a composition containing a crosslinkable diorganopolysiloxane, an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule, a crosslinking catalyst, and an organo(poly)siloxane having 1 or 2 Si-bonded hydrogen atoms and from 2 to 8 silicon atoms per molecule in which the composition is free of a filler having a surface area greater than 50 g/m 2 in an amount greater than 1 weight percent based on the weight of the organosilicon compounds and thereafter crosslinking the crosslinkable diorganopolysiloxane.
Claim 2
Independent Claim
96 words
A method for impregnating textile materials made from organic fibers which comprises impregnating the textile materials with a composition containing a crosslinkable diorganopolysiloxane, an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule, a crosslinking catalyst, and an organo(poly)siloxane having 1 or 2 Si-bonded hydrogen atoms and from 2 to 8 silicon atoms per molecule in which the composition is free of a filler having a surface area greater than 50 g/m 2 in an amount greater than 1 weight percent based on the weight of the organosilicon compounds and thereafter crosslinking the crosslinkable diorganopolysiloxane.
Claim 3
Dependent Claim
43 words
The method of claim 1, wherein at least one linear diorgano(poly)siloxane having one Si-bonded hydrogen atom in at least one terminal unit is used as the organo(poly)siloxane having 1 or 2 Si-bonded hydrogen atoms and from 2 to 8 silicon atoms per molecule.
Claim 4
Dependent Claim
53 words
The method of claim 1, wherein the organo(poly)siloxane having 1 or 2 Si-bonded hydrogen atoms and from 2 to 8 silicon atoms per molecule is used in an amount of from 0.2 to 10 parts by weight per part by weight of the organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule.
Claim 5
Dependent Claim
53 words
The method of claim 2, wherein the organo(poly)siloxane having 1 or 2 Si-bonded hydrogen atoms and from 2 to 8 silicon atoms per molecule is used in an amount of from 0.2 to 10 parts by weight per part by weight of the organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule.
Claim 6
Dependent Claim
13 words
The method of claim 1, wherein the crosslinkable diorganopolysiloxane is a hydroxyl-terminated diorganopolysiloxane.
Claim 7
Dependent Claim
18 words
The method of claim 5, wherein the crosslinking catalyst is a carboxylic acid salt of tin or zinc.
Claim 8
Dependent Claim
17 words
The method of claim 1, wherein the crosslinkable diorganopolysiloxane contains SiC-bonded organic radicals having aliphatic multiple bonds.
Claim 9
Dependent Claim
23 words
The method of claim 7, wherein the crosslinking catalyst is selected from the group consisting of a platinum compound and a platinum complex.
Claim 10
Dependent Claim
38 words
The method of claim 3, wherein the organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule is present in an amount of from 1 to 10 parts by weight per 100 parts by weight of the diorganopolysiloxane.
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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) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |