US4459211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for waste encapsulation
Assignee: Dow Chemical Co
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Filing: 1982-05-10
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Granted: 1984-07-10
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Expires: 2002-05-10
Abstract
Abstract An improvement in the process of encapsulating aqueous liquid waste materials in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, wherein the waste is emulsified in the resin, which comprises increasing the amount of waste material emulsified in a given amount of resin by incorporating in the resin-waste emulsion both a water soluble salt of carboxymethyl cellulose and a water-soluble polymeric substance containing a carbon chain having a plurality of -COOH groups or derivatives thereof.
Inventors
- 👤 Pietro T. Carini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/16; G21F9/167
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
In the process of encapsulating wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is emulsified in the resin, the improvement which comprises incorporating in the waste-resin emulsion both a water-soluble polymeric substance containing a carbon chain having a plurality of --COOH groups and derivatives thereof, and a water-soluble salt of carboxymethyl cellulose.
Claim 2
Dependent Claim
66 words
In the process of encapsulating wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is emulsified in the resin, the improvement which comprises incorporating in the waste-resin emulsion both a water-soluble polymeric substance containing a carbon chain having a plurality of --COOH groups and derivatives thereof, and a water-soluble salt of carboxymethyl cellulose.
Claim 3
Dependent Claim
108 words
In the process of encapsulating aqueous liquid wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is emulsified in the resin, the improvement which comprises incorporating in the waste-resin emulsion both a water-soluble salt of carboxymethyl cellulose and a water-soluble copolymer of a 1-olefin containing 4 to 16 carbon atoms and a compound selected from the group consisting of ##STR3## where each R is individually selected from the group consisting of hydrogen, methyl and ethyl and X is individually selected from the group consisting of hydrogen, methyl, ethyl, propyl, butyl, ammonium and an alkali metal.
Claim 4
Dependent Claim
108 words
In the process of encapsulating aqueous liquid wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is emulsified in the resin, the improvement which comprises incorporating in the waste-resin emulsion both a water-soluble salt of carboxymethyl cellulose and a water-soluble copolymer of a 1-olefin containing 4 to 16 carbon atoms and a compound selected from the group consisting of ##STR3## where each R is individually selected from the group consisting of hydrogen, methyl and ethyl and X is individually selected from the group consisting of hydrogen, methyl, ethyl, propyl, butyl, ammonium and an alkali metal.
Claim 5
Dependent Claim
27 words
The process of claim 2 wherein both the carboxymethyl cellulose and the water soluble polymer are incorporated in the resin prior to the emulsification of the water.
Claim 6
Dependent Claim
35 words
The process of claim 2 wherein carboxymethyl cellulose has a degree of substitution ranging from about 0.65 to about 1.2 and the compound selected from the group in the production of the copolymer is ##STR4##
Claim 7
Dependent Claim
10 words
The process of claim 4 wherein the 1-olefin is diisobutylene.
Claim 8
Dependent Claim
102 words
In the process of encapsulating aqueous liquid wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the liquid waste is emulsified in the resin, the improvement which comprises incorporating in the resin prior to the incorporation of the waste both a sodium carboxymethyl cellulose and a water-soluble copolymer of a 1-olefin containing 4 to 16 carbon atoms and an anhydride having the formula ##STR5## wherein each R is individually selected from the group consisting of hydrogen, methyl and ethyl, said copolymer having a molecular weight of from about 500 to 10,000.
Claim 9
Dependent Claim
102 words
In the process of encapsulating aqueous liquid wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the liquid waste is emulsified in the resin, the improvement which comprises incorporating in the resin prior to the incorporation of the waste both a sodium carboxymethyl cellulose and a water-soluble copolymer of a 1-olefin containing 4 to 16 carbon atoms and an anhydride having the formula ##STR5## wherein each R is individually selected from the group consisting of hydrogen, methyl and ethyl, said copolymer having a molecular weight of from about 500 to 10,000.
Claim 10
Dependent Claim
33 words
The process as defined in claim 6 wherein the water-soluble copolymer is the sodium salt thereof, the 1-olefin is diisobutylene and the copolymer has a molecular weight of from about 800 to 3,000.
Claim 11
Dependent Claim
36 words
The process as defined in claim 6 wherein the sodium carboxymethyl cellulose has a degree of substitution ranging from about 0.65 to about 0.90 and the water-soluble copolymer is a copolymer of maleic anhydride and diisobutylene.
References Cited (Backward Citations)
US3190868A
Cited
US4077901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |