US4115261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating drinking water and sewage
Assignee: Bayer AG
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Filing: 1976-12-29
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Granted: 1978-09-19
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Expires: 1996-12-29
Abstract
Abstract The invention relates to a process for removing oleophilic odor- and tasteproducing substances from water by treating the water with an insoluble, macroporous adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei, the polymer containing chloromethyl groups as substituents; some of the chlorine atoms in the chlormethyl groups can be reacted with ammonia or amines, furthermore the invention relates to the adsorber resins to be used in the claimed process.
Inventors
- 👤 Herbert Corte
- 👤 Harold Heller
- 👤 Michael Lange
- 👤 Otto Netz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08J9/286; B; B01; B01J; B01J20/00; B01J20/22; C02; C02F; C02F1/00; C02F1/28; C02F1/285; C08J2325/00; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/916
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A process for removing oleophilic odour- and taste-producing substances from water wherein the water is treated with an insoluble macroporous adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei substitued by substituents consisting essentially of (1) chloromethyl substituents or (2) chloromethyl substituents partially aminated by reacting some of the chlorine atoms thereof with a member selected from the group consisting of ammonia, primary amines and secondary amines.
Claim 2
Dependent Claim
72 words
A process for removing oleophilic odour- and taste-producing substances from water wherein the water is treated with an insoluble macroporous adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei substitued by substituents consisting essentially of (1) chloromethyl substituents or (2) chloromethyl substituents partially aminated by reacting some of the chlorine atoms thereof with a member selected from the group consisting of ammonia, primary amines and secondary amines.
Claim 3
Dependent Claim
29 words
A process as claimed in claim 1, wherein the matrix of the adsorber resin is a copolymer of an aromatic monovinyl compound and at least one aromatic polyvinyl compound.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 1, wherein the matrix of the adsorber resin is a copolymer of styrene and divinylbenzene.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 1, wherein the matrix of the adsorber resin is a copolymer of styrene and ethylene glycol dimethacrylate.
Claim 6
Dependent Claim
21 words
A process as claimed in claim 1, wherein the matrix of the adsorber resin is a copolymer of styrene and 1,3,5-diacryloylhexahydro-s-triazine.
Claim 7
Dependent Claim
22 words
A process as claimed in claim 1, wherein the matrix of the adsorber resin is a copolymer of an alkylstyrene with divinylbenzene.
Claim 8
Dependent Claim
25 words
A process as claimed in claim 1, wherein the adsorber resin contains from 1 to 50% of at least one polyvinyl compound as monomeric units.
Claim 9
Dependent Claim
25 words
A process as claimed in claim 1, wherein the adsorber resin contains from 3 to 30% of monomeric units of at least one polyvinyl compound.
Claim 10
Dependent Claim
21 words
A process as claimed in claim 1, wherein the adsorber resin has a porosity of from 20 to 80% by volume.
Claim 11
Dependent Claim
21 words
A process as claimed in claim 1, wherein the adsorber resin has a porosity of from 30 to 60% by volume.
Claim 12
Dependent Claim
23 words
A process as claimed in claim 1, wherein the adsorber resin has an active surface of from 10 to 1000 m 2 /g.
Claim 13
Dependent Claim
23 words
A process as claimed in claim 1, wherein the adsorber resin has an active surface of from 20 to 200 m 2 /g.
Claim 14
Dependent Claim
21 words
A process as claimed in claim 1, wherein the adsorber resin contains from 0.05 to 1.2 chlormethyl groups per aromatic nucleus.
Claim 15
Dependent Claim
22 words
A process as claimed in claim 1, wherein the adsorber resin has a chlorine content of from 5 to 25% by weight.
Claim 16
Dependent Claim
28 words
A process as claimed in claim 1 wherein said primary amines and said secondary amines are respectively polyamines having primary amino groups and polyamines having secondary amino groups.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |