Patent US4076672A successfully refreshed from Google Patents.
US4076672A
Expired / Lapsed
US
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Lubricants for organic fibres
Assignee: Wacker Chemie AG
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Filing: 1976-07-29
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Granted: 1978-02-28
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Expires: 1996-07-29
Abstract
Abstract A composition containing a mixture of (a) an aqueous emulsion obtained from the emulsion polymerization of a diorganopolysiloxane having an average viscosity of at least 20,000 cSt at 25° C and component (b) which is selected from the class consisting of (i) a paraffin wax, (ii) a perfluoropolymer in which some of the fluoro groups may be substituted with chlorine atoms and mixtures thereof. The composition is applied as a lubricant to organic fibres to improve their slip properties.
Inventors
- 👤 Peter Huber
- 👤 Helga Lampelzammer
- 👤 Ewald Pirson
- 👤 Franz Wimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:59
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M7/00; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10M2229/052; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/46; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2311; Y10T442/2328
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A process for preparing a lubricant for organic fibers which comprises polymerizing an aqueous emulsion of (a) a diorganopolysiloxane having the general formula (HO).sub.x --(SiR.sub.2 O).sub.n --H.sub.x in which each R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms, a phenyl radical, a halohydrocarbon radical and an aminohydrocarbon radical, x is 0 or 1 and n is an integer of from 3 to 500, with the provision that when x is 0, n is 3, 4 or 5, in the presence of component (b) which is selected from the class consisting of (i) a paraffin wax (ii) polytetrafluoroethylene and (iii) polytrifluorochloroethylene, in which component (b) is present in an amount of from 1 to 70 percent by weight based on the weight of components (a) and (b) to form an aqeuous emulsion in which the diorganopolysiloxane has a viscosity of at least 20,000 cSt at 25° C.
Claim 2
Dependent Claim
155 words
A process for preparing a lubricant for organic fibers which comprises polymerizing an aqueous emulsion of (a) a diorganopolysiloxane having the general formula (HO).sub.x --(SiR.sub.2 O).sub.n --H.sub.x in which each R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms, a phenyl radical, a halohydrocarbon radical and an aminohydrocarbon radical, x is 0 or 1 and n is an integer of from 3 to 500, with the provision that when x is 0, n is 3, 4 or 5, in the presence of component (b) which is selected from the class consisting of (i) a paraffin wax (ii) polytetrafluoroethylene and (iii) polytrifluorochloroethylene, in which component (b) is present in an amount of from 1 to 70 percent by weight based on the weight of components (a) and (b) to form an aqeuous emulsion in which the diorganopolysiloxane has a viscosity of at least 20,000 cSt at 25° C.
Claim 3
Dependent Claim
56 words
The process of claim 1, wherein the diorganopolysiloxane is admixed with a diorganopolysiloxane of the general formula R.sub.3 SiO--(SiR.sub.2 O).sub.m --SiR.sub.3 in which R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms, a phenyl radical, a halohydrocarbon radical and an aminohydrocarbon radical and m is a positive integer.
Claim 4
Dependent Claim
60 words
The process of claim 1, wherein the polymerization is conducted in the presence of a catalyst having the general formula R.sup.1 SO.sub.3 H in which R 1 is selected from the class consisting of an alkyl radical having from 6 to 18 carbon atoms and an alkaryl radical in which the alkyl group has from 6 to 18 carbon atoms.
Claim 5
Dependent Claim
28 words
The process of claim 3, wherein the catalyst is used in an amount of from 0.1 to 5 percent by weight, based on the weight of the diorganopolysiloxane.
Claim 6
Dependent Claim
21 words
The process of claim 3, wherein the catalyst is neutralized by adding a basic compound after the polymerization has been completed.
Claim 7
Dependent Claim
17 words
The process of claim 1, wherein the polymerization is conducted in the presence of an ion-exchange resin.
Claim 8
Dependent Claim
31 words
The process of claim 3, wherein the polymerization is conducted in the presence of up to 5 percent by weight, based on the polymerization mixture, of an anionic or non-ionic emulsifier.
Claim 9
Dependent Claim
15 words
Organic fibres treated with the lubricant prepared in accordance with the process of claim 1.
Claim 10
Dependent Claim
19 words
The process of claim 1, wherein the paraffin wax has a melting range of from 30° to 80° C.
Claim 11
Dependent Claim
21 words
The process of claim 1, wherein the fluoropolymers have a molecular weight of 10 5 to 5 × 10 6 .
Claim 12
Dependent Claim
19 words
The process of claim 1, wherein the fluoropolymers have an average particle size of from 0.1 to 0.5 micron.
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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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |