US4400313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for waste encapsulation
Assignee: Dow Chemical Co
•
Filing: 1980-06-30
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Granted: 1983-08-23
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Expires: 2000-06-30
Abstract
Abstract An improvement in the process of encapsulating waste materials in aqueous liquid or finely divided, dry solid form, in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, which comprises increasing the amount of waste material incorporated in a given amount of resin by adding thereto a water-soluble polymeric substance containing a carbon chain having a plurality of --COOH groups or derivatives thereof.
Inventors
- 👤 Keith Roberson
- 👤 Harold E. Filter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:34
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/28; G21F9/30; G21F9/301; G21F9/307; G21F9/04; G21F9/06; G21F9/16; G21F9/167
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
In the process of encapsulating dry solids and aqueous wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is dispersed in the resin, the improvement which comprises incorporating in the waste-resin dispersion 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, said copolymer being present in an amount sufficient to increase the amount of waste encapsulated in a given amount of resin.
Claim 2
Dependent Claim
123 words
In the process of encapsulating dry solids and aqueous wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins and mixtures thereof, wherein the waste is dispersed in the resin, the improvement which comprises incorporating in the waste-resin dispersion 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, said copolymer being present in an amount sufficient to increase the amount of waste encapsulated in a given amount of resin.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the compound selected from the group is ##STR4##
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein R is the compound selected from the group is hydrogen.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein the 1-olefin is diisobutylene.
Claim 6
Dependent Claim
15 words
The process of claim 2 wherein the 1-olefin contains from 6 to 10 carbon atoms.
Claim 7
Dependent Claim
110 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 dispersed in the resin, the improvement which comprises incorporating in the waste-resin dispersion 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, and is present in an amount sufficient to increase the amount of waste encapsulated in a given amount of resin.
Claim 8
Dependent Claim
110 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 dispersed in the resin, the improvement which comprises incorporating in the waste-resin dispersion 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, and is present in an amount sufficient to increase the amount of waste encapsulated in a given amount of resin.
Claim 9
Dependent Claim
30 words
The process as defined in claim 6 wherein the 1-olefin contains from 6 to 10 carbons and the resulting copolymer has a molecular weight of from about 800 to 3,000.
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
20 words
The process as defined in claim 8 wherein the water-soluble sodium salt is a copolymer of maleic anhydride and diisobutylene.
Claim 12
Dependent Claim
31 words
The process as defined in claim 9 wherein the copolymer is present in an amount varying from about 0.2 to about 5% by weight based on the weight of the resin.
Claim 13
Dependent Claim
33 words
The process as defined in claim 6 wherein the water-soluble copolymer is the ammonium salt thereof, the 1-olefin is diisobutylene and the copolymer has a molecular weight of from about 800 to 3000.
Claim 14
Dependent Claim
20 words
The process as defined in claim 11 wherein the water-soluble ammonium salt is a copolymer of maleic anhydride and diisobutylene.
Claim 15
Dependent Claim
31 words
The process as defined in claim 6 wherein the water-soluble copolymer is present in an amount varying from about 0.06% to about 8% by weight based on the weight of resin.
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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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |