GB1117032A - A new polyoxyethylene glycol based product - Google Patents

A new polyoxyethylene glycol based product

Info

Publication number
GB1117032A
GB1117032A GB17108/66A GB1710866A GB1117032A GB 1117032 A GB1117032 A GB 1117032A GB 17108/66 A GB17108/66 A GB 17108/66A GB 1710866 A GB1710866 A GB 1710866A GB 1117032 A GB1117032 A GB 1117032A
Authority
GB
United Kingdom
Prior art keywords
water
irradiation
solution
jelly
polyoxyethylene glycol
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
GB17108/66A
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of GB1117032A publication Critical patent/GB1117032A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C05G5/27—Dispersions, e.g. suspensions or emulsions
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
    • C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/08—Saturated oxiranes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
    • C08J2371/02—Polyalkylene oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Fertilizers (AREA)

Abstract

A polyoxyethylene glycol based polymer is prepared by ionization irradiation of an aqueous solution of said polyglycol using an irradiation dose output higher than a predetermined critical output at which critical point the viscosity of said aqueous solution remains substantially constant in the course of the irradiation. g -Rays originating from a radiocobalt 60 source may be used as the ionization radiation. Concomitantly with the irradiation an impoverishment of the solution in respect of oxygen may be effected, for example by degasifying said solution. The product is essentially a three-dimensional cross-linked polymer in the form of a jelly retaining the water of solution, swelling in water and remaining insoluble in water. Water may be eliminated from the jelly by the addition of potassium fluoride or calcium chloride giving powders, or by sublimation giving a porous polymer which swells rapidly when again placed in water. The jelly may be used as a carrier for fertilizers and may also form a basis for pharmaceutical and cosmetic preparations.ALSO:A plant growth medium comprises g -irradiated water-swellable polyoxyethylene glycol and sand or earth.
GB17108/66A 1965-04-21 1966-04-19 A new polyoxyethylene glycol based product Expired GB1117032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR13935A FR1441586A (en) 1965-04-21 1965-04-21 Polyoxyethylene glycol gel and method of preparation

Publications (1)

Publication Number Publication Date
GB1117032A true GB1117032A (en) 1968-06-12

Family

ID=8576843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17108/66A Expired GB1117032A (en) 1965-04-21 1966-04-19 A new polyoxyethylene glycol based product

Country Status (3)

Country Link
DE (1) DE1669781A1 (en)
FR (1) FR1441586A (en)
GB (1) GB1117032A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634943A (en) * 1990-07-12 1997-06-03 University Of Miami Injectable polyethylene oxide gel implant and method for production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634943A (en) * 1990-07-12 1997-06-03 University Of Miami Injectable polyethylene oxide gel implant and method for production
US5645583A (en) * 1990-07-12 1997-07-08 University Of Miami Injectable polyethylene oxide gel implant and method for production
US5681869A (en) * 1990-07-12 1997-10-28 University Of Miami Injectable polyethylene oxide gel implant and method for production

Also Published As

Publication number Publication date
DE1669781A1 (en) 1971-08-26
FR1441586A (en) 1966-06-10

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