Patent US3943229A successfully refreshed from Google Patents.
US3943229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing iodine and compounds thereof from gaseous effluents
Assignee: Rohm and Haas Co
•
Filing: 1973-11-30
•
Granted: 1976-03-09
•
Expires: 1993-11-30
Abstract
Abstract Certain anion exchange resins containing substantial amounts of cross-linker are useful in the removal of iodine and compounds thereof from gaseous effluents.
Inventors
- 👤 Ronald L. Keener
- 👤 Paul A. Kittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:19
CPC Classifications
B; B01; B01J; B01J41/00; B01J41/08; B01J41/12; B01J41/14; B01D; B01D53/00; B01D53/02; B01J41/04; G; G21; G21F; G21F9/00; G21F9/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
85 words
A method for removing iodine and compounds thereof from gaseous streams which comprises contacting the stream with a mass or bed of crosslinked acrylic anion exchange resin, derived from at least one acrylic monomer selected from the group consisting of branched and straight chain alkyl acrylate esters containing 1 to 6 carbon atoms, substituted alkyl acrylate esters, aromatic acrylate esters, acrylic acid, acrylate salts, acryloyl halides, acrylonitrile derivatives and acrylamide derivatives, and at least one crosslinking monomer, containing two or more reactive unsaturated carbon-carbon bonds.
Claim 2
Independent Claim
85 words
A method for removing iodine and compounds thereof from gaseous streams which comprises contacting the stream with a mass or bed of crosslinked acrylic anion exchange resin, derived from at least one acrylic monomer selected from the group consisting of branched and straight chain alkyl acrylate esters containing 1 to 6 carbon atoms, substituted alkyl acrylate esters, aromatic acrylate esters, acrylic acid, acrylate salts, acryloyl halides, acrylonitrile derivatives and acrylamide derivatives, and at least one crosslinking monomer, containing two or more reactive unsaturated carbon-carbon bonds.
Claim 3
Dependent Claim
10 words
Method of claim 1 wherein the iodine compounds are radioactive.
Claim 4
Dependent Claim
11 words
Method of claim 2 wherein the iodine compounds include alkyl iodides.
Claim 5
Dependent Claim
11 words
Method of claim 2 wherein the iodine compounds include hydrogen iodide.
Claim 6
Dependent Claim
11 words
Method of claim 2 wherein the iodine compounds include elemental iodine.
Claim 7
Dependent Claim
23 words
Method according to claim 2 wherein the process temperature exceeds 100°C. and the relative humidity is in the range of 0 - 100%.
Claim 8
Dependent Claim
14 words
Method according to claim 2 wherein the resin is utilized in its dry state.
Claim 9
Dependent Claim
29 words
Method according to claim 2 wherein the crosslinking monomers of the resin are present in a total amount of not less than 20% by weight of total monomer mix.
Claim 10
Dependent Claim
12 words
Method according to claim 2 wherein the crosslinking monomer contains diethyleneglycoldivinyl ether.
Claim 11
Dependent Claim
21 words
Method of claim 1 wherein the resin is a weak base ion exchange resin derived from a methyl acrylate copolymer matrix.
Claim 12
Dependent Claim
21 words
Method according to claim 2 wherein the resin comprises a copolymerized and functionalized mixture of methyl acrylate, divinylbenzene and diethyleneglycoldivinyl ether.
Claim 13
Dependent Claim
24 words
Method according to claim 11 wherein the cross linker monomer mixture comprises about 20% divinylbenzene, and about 5% diethyleneglycoldivinyl ether of total monomer mixture.
Claim 14
Dependent Claim
32 words
Method according to claim 2 wherein the resin is produced by aminolyzing an acrylic copolymer by reacting it with a polyamine or a mixture of polyamine and a long chain monofunctional amine.
Claim 15
Dependent Claim
13 words
Method according to claim 13 wherein the long chain monofunctional amine is n-octylamine.
Claim 16
Dependent Claim
11 words
Method according to claim 13 wherein the polyamine compound is dimethylaminopropylamine.
References Cited (Backward Citations)
US2077298A
Cited
US3700610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |