GB509242A - Process of concentrating sols and suspensions - Google Patents

Process of concentrating sols and suspensions

Info

Publication number
GB509242A
GB509242A GB3373237A GB3373237A GB509242A GB 509242 A GB509242 A GB 509242A GB 3373237 A GB3373237 A GB 3373237A GB 3373237 A GB3373237 A GB 3373237A GB 509242 A GB509242 A GB 509242A
Authority
GB
United Kingdom
Prior art keywords
particles
jelly
per cent
gelatine
medicines
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
Application number
GB3373237A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB509242A publication Critical patent/GB509242A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B01D1/222—In rotating vessels; vessels with movable parts
    • B01D1/228—In rotating vessels; vessels with movable parts horizontally placed cylindrical container or drum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicinal Preparation (AREA)

Abstract

509,242. Medicines ; X-ray contrast media. KRAUSE, G. A. Dec. 6, 1937, Nos. 33732 and 33734. Convention dates, Dec. 4, 1936, and Sept. 10, 1937. Addition to 483,221, [Group III]. Drawings to Specification. [Class 81 (i)] [Also in Group III] Preparations suitable for the intravenous injection of medicines and X-ray contrast media are obtained by making aqueous dispersions of solid organic compounds according to the parent Specification, having particles of isotropic or anisotropic form by adding a solution of the compound in an organic solvent to water in the presence of an additional colloid and within certain defined temperature limits and concentrating them quickly and preferably in vacuo, with constant agitation, in a rotating cylindrical evaporator. If desired, rocking and similar movements may also be imparted to the evaporator. In addition, agglomeration or sedimentation of the particles may be prevented on standing by adding to the sol or suspension during or after the concentration a sufficient amount of a hydrophilous, jelly-forming substance, e.g. gelatine or agar, that at room temperatures, below 30‹ C., a solid jelly will first be formed, and the Brownian movement of the particles suppressed. According to an example, 50 gms. of tri-iodine heptadecylic diethyl methanol is dissolved in 4000 c.c. of alcohol and added at 30‹ C. to 6000 c.c. water containing 0.03 per cent of lecithin. A suspension of spherical particles having an average diameter of 0.5Á, is formed. It is then concentrated at 12-18‹ C. until the disperse phase is about 35 per cent of the total volume. Gelatine is then added in an amount equal to 1-1.5 per cent of the disperse phase. A rigid jelly is formed at room temperatures. Above 30‹ C. a liquid sol is formed.
GB3373237A 1935-07-08 1937-12-06 Process of concentrating sols and suspensions Expired GB509242A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE483221X 1935-07-08
DE509242X 1936-12-04

Publications (1)

Publication Number Publication Date
GB509242A true GB509242A (en) 1939-07-06

Family

ID=33453438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3373237A Expired GB509242A (en) 1935-07-08 1937-12-06 Process of concentrating sols and suspensions

Country Status (1)

Country Link
GB (1) GB509242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803397A1 (en) * 2013-05-13 2014-11-19 Cheil Industries Inc. Apparatus for purifying organicelectroluminescent material and method for purifying organic compound

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803397A1 (en) * 2013-05-13 2014-11-19 Cheil Industries Inc. Apparatus for purifying organicelectroluminescent material and method for purifying organic compound
US9850259B2 (en) 2013-05-13 2017-12-26 Cheil Industries, Inc. Apparatus for purifying organic compound and method of purifying organic compound

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