US4167501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a textile-treating composition and resin-silicone compositions therefor
Assignee: Dow Silicones Corp
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Filing: 1978-04-13
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Granted: 1979-09-11
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Expires: 1998-04-13
Abstract
Abstract A homogeneous blend of a concentrated aqueous solution of a durable press resin and a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane was found to be storage-stable and to possess improved resistance to skin over during atmospheric exposure. The preparation of the homogeneous blend and its subsequent dilution with water comprises an improved method for preparing a textile-treating composition.
Inventors
- 👤 Robert J. Rooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08L; C08L83/00; C08L83/04; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/643; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
A method for reducing the skin-over of a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane, said method consisting of mixing at least an equal portion by weight of a concentrated aqueous solution of a durable press resin with said concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane, thereby forming a concentrated homogeneous resin-silicone blend which has increased resistance to skin-over when exposed to the atmosphere compared to the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane.
Claim 2
Independent Claim
74 words
A method for reducing the skin-over of a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane, said method consisting of mixing at least an equal portion by weight of a concentrated aqueous solution of a durable press resin with said concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane, thereby forming a concentrated homogeneous resin-silicone blend which has increased resistance to skin-over when exposed to the atmosphere compared to the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane.
Claim 3
Dependent Claim
21 words
A method according to claim 1 wherein the concentrated aqueous emulsion of hydroxyl-endblocked polydimethylsiloxane is prepared by emulsion polymerization of cyclopolydimethylsiloxanes.
Claim 4
Dependent Claim
34 words
A method according to claim 2 wherin the concentrated aqueous solution of a durable press resin is prepared from a durable press resin selected from the group consisting of 1,3-bis(hydroxymethyl)-2-imidazolidinone, 1,3-bis(hydroxymethyl)-4,5-dihydroxy-2-imidazolidinone and N,N-bis(hydroxymethyl)methoxyethyl carbamate.
Claim 5
Dependent Claim
33 words
A method according to claim 3 wherein the weight ratio of concentrated aqueous solutions of durable press resin to concentrated aqueous emulsion of hydroxyl-endblocked polydimethylsiloxane has a value of from 2:1 to 5:1.
Claim 6
Dependent Claim
37 words
A homogeneous resin-silicone blend obtained by mixing one part by weight of a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane and at least one part by weight of a concentrated aqueous solution of a durable press resin.
Claim 7
Dependent Claim
37 words
A homogeneous resin-silicone blend obtained by mixing one part by weight of a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane and at least one part by weight of a concentrated aqueous solution of a durable press resin.
Claim 8
Dependent Claim
22 words
A composition according to claim 5 wherein the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane is prepared by emulsion polymerization of cyclopolydimethylsiloxanes.
Claim 9
Dependent Claim
34 words
A composition according to claim 6 wherein the concentrated aqueous solution of a durable press resin is prepared from a durable press resin selected from the group consisting of 1,3-bis(hydroxymethyl)-2-imidazolidinone, 1,3-bis(hydroxymethyl)-4,5-dihydroxy-2-imidazolidinone and N,N-bis(hydroxymethyl)methoxyethyl carbamate.
Claim 10
Dependent Claim
33 words
A composition according to claim 7 wherein the weight ratio of concentrated aqueous solution of durable press resin to concentrated aqueous emulsion of hydroxyl-endblocked polydimethylsiloxane has a value of from 2:1 to 5:1.
Claim 11
Dependent Claim
17 words
A composition according to claim 8 wherein a surfactant is admixed with the concentrated homogeneous resin-silicone blend.
Claim 12
Dependent Claim
119 words
In a process for preparing a textile-treating composition comprising a dilute, homogeneous mixture of water, a water-soluble durable press resin and an emulsified hydroxyl-endblocked polydimethylsiloxane, said process consisting essentially of the steps of mixing a concentrated aqueous solution of a durable press resin and a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane with a water phase to provide and dilute, homogeneous mixture, the improvement consisting of mixing the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane with at least an equal portion by weight of the concentrated aqueous solution of a durable press resin prior to preparing the dilute, homogeneous mixture, thereby providing a concentrated, homogeneous resin-silicone blend, and thereafter preparing the textile-treating composition using the concentrated, homogeneous resin-silicone blend.
Claim 13
Dependent Claim
119 words
In a process for preparing a textile-treating composition comprising a dilute, homogeneous mixture of water, a water-soluble durable press resin and an emulsified hydroxyl-endblocked polydimethylsiloxane, said process consisting essentially of the steps of mixing a concentrated aqueous solution of a durable press resin and a concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane with a water phase to provide and dilute, homogeneous mixture, the improvement consisting of mixing the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane with at least an equal portion by weight of the concentrated aqueous solution of a durable press resin prior to preparing the dilute, homogeneous mixture, thereby providing a concentrated, homogeneous resin-silicone blend, and thereafter preparing the textile-treating composition using the concentrated, homogeneous resin-silicone blend.
Claim 14
Dependent Claim
22 words
A process according to claim 10 wherein the concentrated aqueous emulsion of a hydroxyl-endblocked polydimethylsiloxane is prepared by emulsion polymerization of cyclopolydimethylsiloxanes.
Claim 15
Dependent Claim
34 words
A process according to claim 11 wherein the concentrated aqueous solution of a durable press resin is prepared from a durable press resin selected from the group consisting of 1,3-bis(hydroxymethyl)-2-imidazolidinone, 1,3-bis(hydroxymethyl-4,5-dihydroxy-2-imidazolidinone and N,N-bis(hydroxymethyl)methoxyethyl carbamate.
Claim 16
Dependent Claim
17 words
A process according to claim 12 wherein a surfactant is admixed with the concentrated homogeneous resin-silicone blend.
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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) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |