US4010110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dispersing contaminants in circulating water or polar organic liquid system
Assignee: Drew Chemical Corp
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Filing: 1976-03-05
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Granted: 1977-03-01
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Expires: 1996-03-05
Abstract
Abstract A dispersant composition comprising (1) a polysiloxane-polyoxyalkylene copolymer; and (2) an oxyalkylene polymer, in which the oxyalkylene of (1) and (2) is oxyethylene and/or oxypropylene. The composition disperses contaminants in aqueous systems without foaming, and also cleanses fouled surfaces.
Inventors
- 👤 Joseph P. Cosentino
- 👤 Frederick R. Mahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/82; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C02; C02F; C02F1/00; C02F1/68; C02F1/682; C02F5/00; C02F5/08; C02F5/10; C08; C08L; C08L71/00; C08L71/02; C08L83/00; C08L83/10; C08L83/12; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
141 words
A process for dispersing contaminants in a circulating water or polar organic liquid system, comprising: adding to the system a dispersing composition consisting essentially of: a. an oxyalkylene polymer having a molecular weight from about 500 to about 5000 wherein the recurring units consist of a member selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof; and b. a polysiloxane-polyoxyalkalene block copolymer having a molecular weight from about 500 to about 10,000 wherein the polysiloxane block consists essentially of recurring units of a dialkyl siloxane wherein the alkyl group has from 1 -3 carbon atoms and the oxyalkylene block consists essentially of recurring units of a member selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof, said components (a) and (b) being present in an amount effective to disperse contaminants in aqueous and polar organic liquid systems.
Claim 2
Dependent Claim
141 words
A process for dispersing contaminants in a circulating water or polar organic liquid system, comprising: adding to the system a dispersing composition consisting essentially of: a. an oxyalkylene polymer having a molecular weight from about 500 to about 5000 wherein the recurring units consist of a member selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof; and b. a polysiloxane-polyoxyalkalene block copolymer having a molecular weight from about 500 to about 10,000 wherein the polysiloxane block consists essentially of recurring units of a dialkyl siloxane wherein the alkyl group has from 1 -3 carbon atoms and the oxyalkylene block consists essentially of recurring units of a member selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof, said components (a) and (b) being present in an amount effective to disperse contaminants in aqueous and polar organic liquid systems.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the composition is added to the liquid in an amount of less than 1%.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein the composition is added to a circulating cooling system.
Claim 5
Dependent Claim
30 words
The process of claim 2 wherein the siloxane-oxyalkylene copolymer is present in an amount from about 0.1 to about 25 parts by weight per 100 parts of the two components.
Claim 6
Dependent Claim
17 words
The process of claim 4 wherein the oxyalkylene polymer is a block copolymer of oxyethylene and oxypropylene.
Claim 7
Dependent Claim
17 words
The process of claim 5 wherein the dialkyl siloxane units of component (b) are dimethyl siloxane units.
Claim 8
Dependent Claim
55 words
The process of claim 6 wherein the polysiloxane-polyoxyalkylene copolymer has the following formula: ##STR5##wherein R' and R" are alkyl; R 2 is methyl, z is an integer of at least 5, p, q and r are integers and C n H 2n O is selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof.
Claim 9
Dependent Claim
43 words
The process of claim 6 wherein the polysiloxane-polyoxyalkylene copolymer has the following structural formula: ##STR6##wherein R'" is lower alkyl, R iv is methyl, R vi is lower alkylene and R v is selected from the group consisting of oxypropylene, oxyethylene and mixtures thereof.
Claim 10
Dependent Claim
27 words
The process of claim 6 wherein the polysiloxane-polyoxyalkylene copolymer is a copolymer of triethoxy end blocked branched chain dimethyl polysiloxane and a butoxy end blocked polyoxyethylene-oxypropylene glycol.
Claim 11
Dependent Claim
84 words
The process of claim 1 wherein the oxyalkylene polymer has the following structural formula: Y[C.sub.n H.sub.2n O].sub.x H wherein: Y is selected from the group consisting of hydrogen and a residue of a member selected from the group consisting of substituted and unsubstituted hydrocarbon alcohols, hydrocarbon phenols, hydrocarbon carboxylic acids, hydrocarbon amines, hydrocarbon amides and wherein the substituent group is selected from the group consisting of chloro, bromo and nitro, and n is 2 - 3 and x is an integer greater than 1.
Claim 12
Dependent Claim
19 words
The process of claim 6 wherein the oxyalkylene block of component (b) is a mixture of oxypropylene and oxyethylene.
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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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |