US4227883A
Expired / Lapsed
US
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Process and composition for cleaning or de-oiling textile materials
Assignee: Rhone Poulenc Industries SA
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Filing: 1978-11-01
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Granted: 1980-10-14
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Expires: 1998-11-01
Abstract
Abstract Process for anti-redeposition of staining substances on textiles of natural, synthetic or artificial fibers or mixtures thereof in the course of operations of dry cleaning or de-oiling by means of suitably stabilized perchloroethylene in which a sufficient amount of an additive represented by at least one monoketone compound having a boiling point below or equal to 160 DEG C. and, preferably lower than 140 DEG C., is added as an anti-redeposition additive.
Inventors
- 👤 Michel Peignier
- 👤 Claude Renault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:34
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/06; D06L1/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
73 words
A process for anti-redeposition, which has the effect of reducing greying by redeposition of staining substances on textiles of natural, synthetic or artificial fibers or mixtures thereof, in the course of operation of dry cleaning, or de-oiling by means of perchloroethylene, comprising incorporating in the perchloroethylene a sufficient anti-greying amount of at least one monoketone anti-redeposition additive having a boiling point which does not exceed 160° C. to observe the desired anti-redeposition effect.
Claim 2
Dependent Claim
73 words
A process for anti-redeposition, which has the effect of reducing greying by redeposition of staining substances on textiles of natural, synthetic or artificial fibers or mixtures thereof, in the course of operation of dry cleaning, or de-oiling by means of perchloroethylene, comprising incorporating in the perchloroethylene a sufficient anti-greying amount of at least one monoketone anti-redeposition additive having a boiling point which does not exceed 160° C. to observe the desired anti-redeposition effect.
Claim 3
Dependent Claim
19 words
A process as claimed in claim 1, in which the monoketone additive has a boiling point below 140° C.
Claim 4
Dependent Claim
86 words
An anti-redeposition process according to claim 1, in which the monoketone is a ketone represented by the general formula: ##STR3## wherein R and R' which may be identical or different represent C 1 -C 8 alkyl, C 1 -C 8 fluoro-, chloro- or bromo-alkyl, C 2 -C 8 alkenyl, C 2 -C 8 alkynyl or a cyclopropyl group, or taken jointly R and R' represent a C 5 -C 6 cycloalkyl group, a C 5 -C 8 alkylcycloalkyl or a C 5 -C 8 alkenylcycloalkyl group.
Claim 5
Dependent Claim
24 words
A process as claimed in claim 1, in which from 0.5 to 8% by weight of the anti-redeposition additive is incorporated in the perchloroethylene.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 1, in which 2 to 5% by weight of the anti-redeposition additive is incorporated in the perchloroethylene.
Claim 7
Dependent Claim
15 words
A process as claimed in claim 1, in which the additive is 2-pentanone and/or 3-pentanone.
Claim 8
Dependent Claim
14 words
A process as claimed in claim 1, in which the additive is 3,3-dimethyl 2-butanone.
Claim 9
Dependent Claim
88 words
An anti-redeposition composition for dry cleaning or de-oiling based on stabilized perchloroethylene, which may contain water up to 6% by weight relative to the textiles to be treated, and auxiliary substances, including cleaning reinforcing agents and anti-static agents, each of which substances may be present in an amount of from 1 to 10 g per liter of said composition, characterized in that the composition contains from 0.5 to 8% by weight of at least one monoketone anti-redeposition additive having a boiling point below or equal to 160° C.
Claim 10
Dependent Claim
88 words
An anti-redeposition composition for dry cleaning or de-oiling based on stabilized perchloroethylene, which may contain water up to 6% by weight relative to the textiles to be treated, and auxiliary substances, including cleaning reinforcing agents and anti-static agents, each of which substances may be present in an amount of from 1 to 10 g per liter of said composition, characterized in that the composition contains from 0.5 to 8% by weight of at least one monoketone anti-redeposition additive having a boiling point below or equal to 160° C.
Claim 11
Dependent Claim
18 words
A composition as claimed in claim 8, in which the monoketone has a boiling point below 140° C.
Claim 12
Dependent Claim
87 words
An anti-redeposition composition as claimed in claim 8, in which the monoketone anti-redeposition additive is represented by the general formula: ##STR4## wherein R and R' which may be identical or different represent C 1 -C 8 alkyl, C 1 -C 8 fluoro-, chloro- or bromo-alkyl, C 2 -C 8 alkenyl, C 2 -C 8 alkynyl or a cyclopropyl group, or taken jointly R and R' represent a C 5 -C 6 cycloalkyl group, a C 5 -C 8 alkylcycloalkyl or a C 5 -C 8 alkenylcycloalkyl group.
Claim 13
Dependent Claim
17 words
An anti-redeposition composition as claimed in claim 8, in which the monoketone additive is 2-pentanone and/or 3-pentanone.
Claim 14
Dependent Claim
16 words
An anti-redeposition composition as claimed in claim 8, in which the monoketone additive is 3,3-dimethyl 2-butanone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |