Patent US4116246A successfully refreshed from Google Patents.
Patent US4405512A successfully refreshed from Google Patents.
US4405512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for encapsulating radioactive organic liquids in a resin
Assignee: Dow Chemical Co
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Filing: 1980-12-03
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Granted: 1983-09-20
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Expires: 2000-12-03
Abstract
Abstract A cured resin system is used to encapsulate certain liquid low level radioactive wastes which are solvents for or are soluble in the uncured resin and which are more soluble in water than in the uncured resin. The process comprises the dilution of said waste with water to an extent that the amount of waste that will partition in the uncured resin system is less than the amount that will retard the cure rate of the system or that will adversely affect physical properties of the cured product, followed by the uniform dispersion of the aqueous solution in said curable resin system after which the resin system is cured to a solid with the aqueous waste solution dispersed therein.
Inventors
- 👤 Harold E. Filter
- 👤 Stevens S. Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:23
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/16; G21F9/167
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A process for encapsulating low level radioactive liquid organic waste in a cured resin into a form suitable for burial wherein said resin is an unsaturated polyester, a vinyl ester resin or a mixture thereof and wherein said waste is a solvent for or is soluble in the uncured resin and is more soluble in water than in the resin, said process comprising the dilution of said waste with water to an extent that the amount of waste that will partition in said uncured resin is less than the amount to retard the cure rate or to adversely affect physical properties of the cured product, followed by the uniform dispersion of the aqueous solution in said curable resin system after which said resin is cured to a solid with said waste dispersed therein.
Claim 2
Dependent Claim
133 words
A process for encapsulating low level radioactive liquid organic waste in a cured resin into a form suitable for burial wherein said resin is an unsaturated polyester, a vinyl ester resin or a mixture thereof and wherein said waste is a solvent for or is soluble in the uncured resin and is more soluble in water than in the resin, said process comprising the dilution of said waste with water to an extent that the amount of waste that will partition in said uncured resin is less than the amount to retard the cure rate or to adversely affect physical properties of the cured product, followed by the uniform dispersion of the aqueous solution in said curable resin system after which said resin is cured to a solid with said waste dispersed therein.
Claim 3
Dependent Claim
27 words
The process claimed in claim 1 wherein the curable resin is a vinyl ester resin which is the polyacrylate ester of a polyepoxide containing a reactive diluent.
Claim 4
Dependent Claim
12 words
The process claimed in claim 2 wherein said reactive diluent is styrene.
Claim 5
Dependent Claim
27 words
The process claimed in claim 1 wherein the curable resin is a vinyl ester resin which is the polymethacrylate ester of a polyepoxide containing a reactive diluent.
Claim 6
Dependent Claim
15 words
The process claimed in claim 2 or 4 wherein said polyepoxide is a polyglycidyl ether.
Claim 7
Dependent Claim
14 words
The process claimed in claim 1 wherein said radioactive liquid organic waste contains acetone.
Claim 8
Dependent Claim
24 words
The process claimed in claim 6 wherein the acetone is diluted with at least 3 parts by weight water to one part of acetone.
Claim 9
Dependent Claim
18 words
The process claimed in claim 1 wherein the curable resin is an unsaturated polyester containing a reactive diluent.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |