Patent US3086244A successfully refreshed from Google Patents.
Patent US4421796A successfully refreshed from Google Patents.
US4421796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating textile fibres
Assignee: Dow Silicones UK Ltd
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Filing: 1982-09-24
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Granted: 1983-12-20
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Expires: 2002-09-24
Abstract
Abstract The removal of oily soil from textile fibres which have been treated with organosiloxanes, e.g. for improved handle or crease recovery, is facilitated if the fibres are also treated with an organosilane of the general formula Y.sub.3 SiRN.sup.+ (R").sub.2 R'X.sup.- in which Y is hydrocarbon, alkoxy or alkoxyalkoxy, at least one Y being alkoxy or alkoxyalkoxy, R represents a divalent hydrocarbon or hydrocarbonoxy group, R' represents a monovalent hydrocarbon group or an alkyleneoxy or polyalkyleneoxy group, each R" represents methyl or ethyl and X represents a halogen atom.
Inventors
- 👤 Peter M. Burril
- 👤 Stephen Westall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:36
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/647; C; C08; C08L; C08L83/00; C08L83/04; D06M13/00; D06M13/50; D06M13/51; D06M13/513; D06M15/6436; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/18; C08G77/20; C08G77/22; C08G77/26; C08G77/42; C08G77/44; C08G77/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A process for the treatment of fibres which comprises contacting the said fibres with both (A) an organosilane of the general formula ##STR2## wherein each Y represents a monovalent group having less than 6 carbon atoms selected from hydrocarbon groups, alkoxy groups and alkoxyalkoxy groups, at least one Y being alkoxy or alkoxyalkoxy, R represents a divalent group having from 3 to 10 carbon atoms, the said group being composed of carbon, hydrogen and, optionally, oxygen present in the form of ether linkages, hydroxyl groups or both, R' represents a group selected from monovalent hydrocarbon groups having from 1 to 15 carbon atoms and groups of the general formula (--OQ) a OZ, wherein Q represents an alkylene group having 2 or 3 carbon atoms, a has a value from 1 to 20 and Z represents a hydrogen atom, an alkyl group or an acyl group, each R" represents a methyl group or an ethyl group and X represents a halogen atom, and (B) one or more organosiloxanes.
Claim 2
Dependent Claim
167 words
A process for the treatment of fibres which comprises contacting the said fibres with both (A) an organosilane of the general formula ##STR2## wherein each Y represents a monovalent group having less than 6 carbon atoms selected from hydrocarbon groups, alkoxy groups and alkoxyalkoxy groups, at least one Y being alkoxy or alkoxyalkoxy, R represents a divalent group having from 3 to 10 carbon atoms, the said group being composed of carbon, hydrogen and, optionally, oxygen present in the form of ether linkages, hydroxyl groups or both, R' represents a group selected from monovalent hydrocarbon groups having from 1 to 15 carbon atoms and groups of the general formula (--OQ) a OZ, wherein Q represents an alkylene group having 2 or 3 carbon atoms, a has a value from 1 to 20 and Z represents a hydrogen atom, an alkyl group or an acyl group, each R" represents a methyl group or an ethyl group and X represents a halogen atom, and (B) one or more organosiloxanes.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1 wherein the Y substituents are selected from methyl groups and alkoxy and alkoxyalkoxy groups having less than 4 carbon atoms.
Claim 4
Dependent Claim
13 words
A process as claimed in claim 2 wherein X represents chlorine or bromine.
Claim 5
Dependent Claim
18 words
A process as claimed in claim 1 wherein organosiloxane (B) comprises a polydiorganosiloxane having terminal silicon-bonded reactive groups.
Claim 6
Dependent Claim
19 words
A process as claimed in claim 1 wherein (A) and (B) are applied to the fibres as a mixture.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 5 wherein the treated fibres are heated to a temperature of from 100° C. to 200° C.
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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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |