US4200726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semipermeable membrane of phenoxy resin containing sulfuric acid groups or salts thereof
Assignee: Daicel Corp
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Filing: 1978-05-30
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Granted: 1980-04-29
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Expires: 1998-05-30
Abstract
Abstract A semipermeable membrane composed of a water-insoluble, membrane-forming polymer (hereinafter referred to as "polymer (II)") which is obtained by partially converting the hydroxyl groups of a polymer represented by the following formula (hereinafter referred to as "polymer (I)"): ##STR1## wherein R and R' are halogen, nitro, methyl or ethyl, X stands for a divalent group selected from methylene, ethylene, isopropylidene, ether (--O--), carbonyl (--CO--), sulfide (--S--), sulfoxide (--SO--) and sulfone (--SO 2 --), l and m are integers of from 0 to 4, p is 0 or 1, and n is an integer of from 100 to 1000, to sulfuric acid groups or alkali metal, ammonium or nitrogen-containing basic organic compound salts thereof.
Inventors
- 👤 Kiyoshi Ishii
- 👤 Ryoshu Suzuki
- 👤 Zenjiro Honda
- 👤 Hitoshi Tsugaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0093; B01D67/00931; B01D71/00; B01D71/06; B01D71/52; B01D71/522; B01D71/5223; B01D71/66; C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; B01D2323/00; B01D2323/30; Y; Y10; Y10S; Y10S525/00; Y10S525/93
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
114 words
A semipermeable membrane consisting essentially of a water-insoluble, membrane-forming polymer having the formula ##STR8## wherein R and R' are halogen, nitro, methyl or ethyl, X is a divalent group selected from the group consisting of methylene, ethylene, isopropylidene, ether (--O--), carbonyl (--CO--), sulfide (--S--), sulfoxide (--SO--) and sulfone (--SO 2 --), l and m are integers of from 0 to 4, p is 0 or 1, and n is an integer of from 100 to 1000, and wherein from 15 to 90% of said D groups are sulfuric acid groups or salts thereof with an alkali metal, ammonia or a nitrogen-containing basic organic compound, and the balance of said D groups are hydroxyl groups.
Claim 2
Dependent Claim
114 words
A semipermeable membrane consisting essentially of a water-insoluble, membrane-forming polymer having the formula ##STR8## wherein R and R' are halogen, nitro, methyl or ethyl, X is a divalent group selected from the group consisting of methylene, ethylene, isopropylidene, ether (--O--), carbonyl (--CO--), sulfide (--S--), sulfoxide (--SO--) and sulfone (--SO 2 --), l and m are integers of from 0 to 4, p is 0 or 1, and n is an integer of from 100 to 1000, and wherein from 15 to 90% of said D groups are sulfuric acid groups or salts thereof with an alkali metal, ammonia or a nitrogen-containing basic organic compound, and the balance of said D groups are hydroxyl groups.
Claim 3
Dependent Claim
26 words
A semipermeable membrane as set forth in claim 1, wherein from 20 to 85% of said D groups are sulfuric acid groups or said salts thereof.
Claim 4
Dependent Claim
29 words
A semipermeable membrane as set forth in claim 1, wherein (X) p is selected from the group consisting of SO 2 and ##STR9## and l and m are zero.
Claim 5
Dependent Claim
19 words
A semipermeable membrane as set forth in claim 1, which is formed on the surface of a porous membrane.
Claim 6
Dependent Claim
30 words
A semipermeable membrane as set forth in claim 1, wherein said nitrogen-containing basic organic compound is selected from the group consisting of di-n-propylamine, di-n-butylamine, pyridine, 1,8-diazabicyclo [5.4.0] undecene-7 and piperidine.
Claim 7
Dependent Claim
26 words
A semipermeable membrane as set forth in claim 1, wherein said nitrogen-containing basic organic compound is selected from the group consisting of ethanolamine, triethylamine and diethylamine.
Claim 8
Dependent Claim
103 words
A polymer having the formula ##STR10## wherein R and R' are halogen, nitro, methyl or ethyl and R and R' can be the same or different, X is methylene, ethylene, isopropylidene, --O--, ##STR11## --S--, --S(O)-- or --S(O) l and m are integers of from 0 to 4, p is 0 or 1, n is integer of from 100 to 1000, and from 10 to 85 percent of the D groups of the polymer are hydroxyl and the balance of the D groups of the polymer are ##STR12## wherein M is an alkali metal and A is ammonia or a nitrogen-containing basic organic compound.
Claim 9
Dependent Claim
103 words
A polymer having the formula ##STR10## wherein R and R' are halogen, nitro, methyl or ethyl and R and R' can be the same or different, X is methylene, ethylene, isopropylidene, --O--, ##STR11## --S--, --S(O)-- or --S(O) l and m are integers of from 0 to 4, p is 0 or 1, n is integer of from 100 to 1000, and from 10 to 85 percent of the D groups of the polymer are hydroxyl and the balance of the D groups of the polymer are ##STR12## wherein M is an alkali metal and A is ammonia or a nitrogen-containing basic organic compound.
Claim 10
Dependent Claim
11 words
A polymer according to claim 7 in which p is 1.
Claim 11
Dependent Claim
15 words
A polymer according to claim 8 in which X is --S(O) 2 -- or ##STR13##
Claim 12
Dependent Claim
13 words
A polymer according to claim 9 in which l and m are 0.
Claim 13
Dependent Claim
94 words
A semipermeable membrane as set forth in claim 1 wherein said nitrogen-containing basic organic compound is selected from the group consisting of methylamine, ethylamine, propylamine, isopropylamine, butylamine, isobutylamine, sec-butylamine, tert-butylamine, pentylamine, isopentylamine, hexylamine, 2-ethylhexylamine, laurylamine, dimethylamine, diethylamine, dipropylamine, diisopropylamine, di-n-butylamine, N-methylethylamine, N-ethylisobutylamine, trimethylamine, triethylamine, N,N-dimethylpropylamine, tributylamine, N-ethyl-N-methylbutylamine, mono-, di- and tri-ethanolamine, diethylamino ethanol, urea, β-dimethylaminopropionitrile, tetramethylammonium tetraethylammonium, cyclohexylamine, N,N-dimethylcyclohexylamine dicyclohexylamine, aniline, o-toluidine, m-toluidine, p-toluidine o-ethylaniline, m-ethylaniline, p-ethylaniline, p-isopropylaniline, p-tert-butylaniline, N-methylaniline, N-ethylaniline, N,N-dimethylaniline, trimethylphenyl ammonium, ethyldimethylphenyl ammonium, benzylamine, α-methylbenzylamine, pyrrole, 1-methylpyrrole, indole, pyridine, α-picoline, β-picoline, γ-picoline, 2-ethylpyridine, quinoline, piperidine, 1-methyl piperidine, 2-methylpiperidine, 1,8-diazabicyclo[5.4.0]undecene-7 and morpholine.
Claim 14
Dependent Claim
89 words
A polymer according to claim 7 wherein said nitrogencontaining basic organic compound is selected from the group consisting of methylamine, ethylamine, propylamine, isopropylamine, butylamine, isobutylamine, sec-butylamine, tert-butylamine, pentylamine, isopentylamine, hexylamine, 2-ethylhexylamine, laurylamine, dimethylamine, diethylamine, dipropylamine, diisopropylamine, di-n-butylamine, N-methylethylamine, N-ethylisobutylamine, trimethylamine, triethylamine, N,N-dimethylpropylamine, tributylamine, N-ethyl-N-methylbutylamine, mono-, di- and tri-ethanolamine, diethylaminoethanol, urea, β-dimethylaminopropionitrile, tetramethylammonium, tetraethylammonium, cyclohexylamine, N,N-dimethylcyclohexylamine, dicyclohexylamine, aniline, o-toluidine, m-toluidine, p-toluidine, o-ethylaniline, m-ethylaniline, p-ethylaniline, p-isopropylaniline, p-tert-butylaniline, N-methylaniline, N-ethylaniline, N,N-dimethylaniline, trimethylphenyl ammonium, ethyldimethylphenyl ammonium, benzylamine, α-methylbenzylamine, pyrrole, 1-methylpyrrole, indole, pyridine, α-picoline, β-picoline, γ-picoline, 2-ethylpyridine, quinoline, piperidine, 1-methylpiperidine, 2-methylpiperidine, 1,8-diazabicyclo[5.4.0]undecene-7 and morpholine.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |