GB595368A - Process of preparing resinous condensation products having ion sorbing properties and products obtained thereby - Google Patents
Process of preparing resinous condensation products having ion sorbing properties and products obtained therebyInfo
- Publication number
- GB595368A GB595368A GB23129/44A GB2312944A GB595368A GB 595368 A GB595368 A GB 595368A GB 23129/44 A GB23129/44 A GB 23129/44A GB 2312944 A GB2312944 A GB 2312944A GB 595368 A GB595368 A GB 595368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- resin
- sodium
- aqueous
- gel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/16—Organic material
- B01J39/18—Macromolecular compounds
- B01J39/19—Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/40—Chemically modified polycondensates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
A cation-active synthetic resin is prepared by heating a solution of a synthetic resinous condensate prepared from an aldehyde and an amino compound in presence of a bisulphite according to the process of Specification 595,366 in a solvent which is present during the reaction until a gel is formed, heating the gel at a temperature and for a time sufficient to form an infusible, porous mass and comminuting said mass. The preferred solvent is water. Alcohols, e.g. methanol, ketones, e.g. acetone or aqueous mixtures of these may be used. The heating may take place at 85-135 DEG C., e.g. 100 DEG C. for a few hours. If desired, the condensate may be spray-dried and the powder heated to cure it. The condensation products may be applied to supports such as cloth, asbestos or clay and cured thereon. The resins may be used intermittently or continuously for exchanging cations in solutions, e.g. by passing the solution through a bed of the resin or by stirring the resin in the solution. Regeneration of spent resin may be effected by treatment with aqueous solutions of salts, e.g. sodium or potassium chloride, followed by washing. Examples describe the preparation of resins from (1) melamine, aqueous formaldehyde and sodium sulphite, the initial condensate being heated at 105 DEG C. for 5 hours, comminuted and screened to yield particles of 0.3 to 0.4 mm. diameter with good cation-exchange properties; (2) urea, aqueous formaldehyde and sodium metabisulphite; (3) urea aqueous acetaldehyde and sodium metabisulphite; (4) melamine, urea, aqueous formaldehyde and sodium sulphite.ALSO:A synthetic resin prepared by heating a solution of a condensation product of an aldehyde, an amino compound and a bisulphite (see Group IV) in a solvent, preferably water, until a gel is formed, heating the gel to form an infusible porous mass and comminuting said mass, is used for absorbing cations such as magnesium, zinc, calcium, iron, manganese and lead from solutions. The ion exchange may be effected by passing the cation containing fluid through a bed of synthetic resin of suitable particle size or a batch of the synthetic resin may be stirred in the cation-containing liquid. Revivification of spent resin may be accomplished by treatment with a liquid containing desired cations, e.g. aqueous solutions of sodium or potassium chloride followed by washing with soft water. The resins may be used over a wide range of pH and do not impart colour to the treated liquids.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US595368XA | 1943-11-22 | 1943-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB595368A true GB595368A (en) | 1947-12-03 |
Family
ID=22023600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23129/44A Expired GB595368A (en) | 1943-11-22 | 1944-11-21 | Process of preparing resinous condensation products having ion sorbing properties and products obtained thereby |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB595368A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0005905A1 (en) * | 1978-05-31 | 1979-12-12 | Imperial Chemical Industries Plc | Aminoplast resin particles, a process for their manufacture and their use in paper products |
EP0042813A2 (en) * | 1980-06-16 | 1981-12-30 | Ciba-Geigy Ag | Anionic absorbents, process for their preparation and their use in removing cationic agents and heavy-metal ions from aqueous solutions |
EP0063319B1 (en) * | 1981-04-18 | 1985-02-13 | BASF Aktiengesellschaft | Method of making water-soluble or self-dispersing resinous tanning agents and their use |
-
1944
- 1944-11-21 GB GB23129/44A patent/GB595368A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0005905A1 (en) * | 1978-05-31 | 1979-12-12 | Imperial Chemical Industries Plc | Aminoplast resin particles, a process for their manufacture and their use in paper products |
US4284759A (en) | 1978-05-31 | 1981-08-18 | Imperial Chemical Industries Limited | Preparation of aminoplast resin particles |
EP0042813A2 (en) * | 1980-06-16 | 1981-12-30 | Ciba-Geigy Ag | Anionic absorbents, process for their preparation and their use in removing cationic agents and heavy-metal ions from aqueous solutions |
EP0042813A3 (en) * | 1980-06-16 | 1982-01-06 | Ciba-Geigy Ag | Anionic absorbents, process for their preparation and their use in removing cationic agents and heavy-metal ions from aqueous solutions |
EP0063319B1 (en) * | 1981-04-18 | 1985-02-13 | BASF Aktiengesellschaft | Method of making water-soluble or self-dispersing resinous tanning agents and their use |
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