NL170374C - METHOD FOR SEPARATING WATER FROM WATER AND FORMALDEHYD MIXTURES - Google Patents

METHOD FOR SEPARATING WATER FROM WATER AND FORMALDEHYD MIXTURES

Info

Publication number
NL170374C
NL170374C NLAANVRAGE7108146,A NL7108146A NL170374C NL 170374 C NL170374 C NL 170374C NL 7108146 A NL7108146 A NL 7108146A NL 170374 C NL170374 C NL 170374C
Authority
NL
Netherlands
Prior art keywords
water
membranes
june
contact
feed mixture
Prior art date
Application number
NLAANVRAGE7108146,A
Other languages
Dutch (nl)
Other versions
NL7108146A (en
NL170374B (en
Original Assignee
Monsanto Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of NL7108146A publication Critical patent/NL7108146A/xx
Publication of NL170374B publication Critical patent/NL170374B/en
Application granted granted Critical
Publication of NL170374C publication Critical patent/NL170374C/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
    • C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/24—Dialysis ; Membrane extraction
    • B01D61/246—Membrane extraction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/82—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82—Purification; Separation; Stabilisation; Use of additives
    • C07C209/84—Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/32—Separation; Purification; Stabilisation; Use of additives
    • C07C253/34—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/786—Separation; Purification; Stabilisation; Use of additives by membrane separation process, e.g. pervaporation, perstraction, reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/14—Membrane materials having negatively charged functional groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

1351187 Separation of water from an aqueous solution MONSANTO CO 15 June 1971 [16 June 1970] 27990/71 Heading B1X Water is separated from a liquid or gaseous feed mixture by contact with one side of a water permeable, nitrogen containing organic polymer membrane containing at least one anionic group and optional cationic groups. The other side of the membrane is in contact with a vapour phase, perferably flowing, which has a lower chemical potential than the feed mixture. The membranes may be discs sheets hollow tubes or fibres and may be multilayered and pretreated with heat or hydrochloric acid. The membranes may be prepared by copolymerising acrylonitrile and sodium styrene, sulphonate in the presence of a sulphuric acidferrous ammonium sulphate hexahydrate-water catalyst. Potassium persulphate and sodium meta-bisulphite are also added and the pH adjusted with sodium carbonate.
NLAANVRAGE7108146,A 1970-06-16 1971-06-14 METHOD FOR SEPARATING WATER FROM WATER AND FORMALDEHYD MIXTURES NL170374C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4680070A 1970-06-16 1970-06-16

Publications (3)

Publication Number Publication Date
NL7108146A NL7108146A (en) 1971-12-20
NL170374B NL170374B (en) 1982-06-01
NL170374C true NL170374C (en) 1982-11-01

Family

ID=21945460

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7108146,A NL170374C (en) 1970-06-16 1971-06-14 METHOD FOR SEPARATING WATER FROM WATER AND FORMALDEHYD MIXTURES

Country Status (7)

Country Link
JP (1) JPS5410548B1 (en)
BE (1) BE768540A (en)
DE (1) DE2129723C3 (en)
FR (1) FR2096357A5 (en)
GB (1) GB1351187A (en)
IL (1) IL37061A (en)
NL (1) NL170374C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396091A (en) * 1971-02-18 1975-05-29 Babcock & Wilcox Ltd Semi-permeable membranes
US4218312A (en) * 1975-12-01 1980-08-19 Monsanto Company Membrane separation of organics from aqueous solutions
US4758348A (en) * 1985-02-01 1988-07-19 Sagami Chemical Research Center Copolymer, separating membrane made thereof and method for separating charge transfer interactive substance from a liquid mixture containing the same
DE3853366T2 (en) * 1987-12-02 1995-07-27 Japan As Represented By Minist Hydrolyzed membrane and process for its manufacture.
US4992176A (en) * 1989-10-23 1991-02-12 Texaco Inc. Dehydration of organic oxygenates
DE102013223126A1 (en) * 2013-11-13 2015-05-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for the preparation of solvent-stable polymer membranes, polymer membrane and solution for the production of a polymer membrane
WO2018230330A1 (en) 2017-06-15 2018-12-20 株式会社カネカ Porous membrane for water treatment use
CN108440306B (en) * 2018-05-24 2023-11-03 柏川新材料科技(宁波)有限公司 Green production equipment and method of tetramethyl ammonium carbonate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953502A (en) * 1955-05-24 1960-09-20 American Oil Co Separation of azeotropic mixtures
NL261767A (en) * 1961-03-08
FR1578019A (en) * 1968-04-29 1969-08-14

Also Published As

Publication number Publication date
FR2096357A5 (en) 1972-02-11
IL37061A0 (en) 1971-08-25
IL37061A (en) 1974-11-29
DE2129723C3 (en) 1981-08-20
BE768540A (en) 1971-12-15
JPS5410548B1 (en) 1979-05-08
DE2129723A1 (en) 1971-12-23
NL7108146A (en) 1971-12-20
NL170374B (en) 1982-06-01
GB1351187A (en) 1974-04-24
DE2129723B2 (en) 1980-09-04

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee