GB871192A - Grafted polymers - Google Patents

Grafted polymers

Info

Publication number
GB871192A
GB871192A GB14031/58A GB1403158A GB871192A GB 871192 A GB871192 A GB 871192A GB 14031/58 A GB14031/58 A GB 14031/58A GB 1403158 A GB1403158 A GB 1403158A GB 871192 A GB871192 A GB 871192A
Authority
GB
United Kingdom
Prior art keywords
water
soluble
group
polymerization
assisted
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
GB14031/58A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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
Priority to NL106028D priority Critical patent/NL106028C/xx
Priority to NL238772D priority patent/NL238772A/xx
Priority to BE578273D priority patent/BE578273A/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB14031/58A priority patent/GB871192A/en
Priority to DEI16357A priority patent/DE1128982B/en
Priority to FR793777A priority patent/FR1226782A/en
Publication of GB871192A publication Critical patent/GB871192A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B31/00—Preparation of derivatives of starch
    • C08B31/08—Ethers
    • C08B31/12—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/12—Hydrolysis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

Water-soluble graft polymers are obtained by polymerizing an ethylenically unsaturated compound having the structure: <FORM:0871192/IV (a)/1> wherein X is a hydrogen atom or a methyl or ethyl group and Y is a carboxyl group, a carboxylic salt group, a nitrile group or an acid amide group in the presence of water-soluble polymeric material, other than a protein, containing a C-H bond having a molecular weight greater than 1000, and, if necessary to impart water-solubility, hydrolysing the polymerization product, the amount of the preformed polymeric substance present in the graft polymer being between 5% and 50% by weight. Water-soluble preformed polymers specified are polyvinyl alcohol, polyvinyl pyridine, polyacrylic and polymethacrylic acids and amides, starch, starch ethers, e.g. isopropylated starch, dextrins, cellulose ethers and polyethylene oxide. Monomers specified are acrylonitrile and acrylamide. Polymerization may be carried out in an aqueous medium with the assistance of catalysts, e.g. peroxides and persulphates, or mixtures of persulphates with reducing agents. The hydrolysis of the polymerization products, when carried out, may be partial or complete and may be effected by means of acid or alkaline hydrolysing agents. Specification 715,194 is referred to.ALSO:The settlement and filtration of aqueous suspensions of ores and waste waters is assisted by the addition thereto of water-soluble graft polymers made by the polymerization of an ethylenically unsaturated compound in the presence of a water-soluble preformed polymeric substance (see Group IV(a)). Examples describe the addition of graft polymers to coal talings and to the precipitates obtained in successive acid and alkaline treatments of scheelite. Specification 715,194 is referred to.ALSO:The settlement and filtration of aqueous suspensions of ores is assisted by the addition thereto of water-soluble graft polymers made by the polymerization of an ethylenically unsaturated compound in the presence of a water-soluble preformed polymeric substance (see Group IV(a)). In an Example (9) scheelite is treated with concentrated hydrochloric acid to form a colloidal precipitate of tungstic acid and other insoluble substances the flocculation and settling of which is assisted by the addition of a hydrolysed acrylonitrile/starch ether graft polymer, the ore precipitate is then dissolved in ammonium hydroxide to form a precipitate of silica, the flocculation and settling of which is assisted by the graft polymer remaining from the first stage of the process. Specification 715,194 is referred to.
GB14031/58A 1958-05-02 1958-05-02 Grafted polymers Expired GB871192A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL106028D NL106028C (en) 1958-05-02
NL238772D NL238772A (en) 1958-05-02
BE578273D BE578273A (en) 1958-05-02
GB14031/58A GB871192A (en) 1958-05-02 1958-05-02 Grafted polymers
DEI16357A DE1128982B (en) 1958-05-02 1959-04-29 Process for the production of water-soluble graft copolymers
FR793777A FR1226782A (en) 1958-05-02 1959-05-02 Water-soluble graft polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14031/58A GB871192A (en) 1958-05-02 1958-05-02 Grafted polymers

Publications (1)

Publication Number Publication Date
GB871192A true GB871192A (en) 1961-06-21

Family

ID=10033741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14031/58A Expired GB871192A (en) 1958-05-02 1958-05-02 Grafted polymers

Country Status (5)

Country Link
BE (1) BE578273A (en)
DE (1) DE1128982B (en)
FR (1) FR1226782A (en)
GB (1) GB871192A (en)
NL (2) NL238772A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839081A (en) * 1973-08-22 1974-10-01 American Cyanamid Co Acrylic fiber having a high water absorbency and a wool-like hand and process therefore
US4255532A (en) * 1979-02-21 1981-03-10 American Cyanamid Company Acrylic polymer composition for melt-spinning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107716121B (en) * 2017-09-29 2019-07-23 江西理工大学 Application of the hydroxypropyl starch ether in Scheelite Flotation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015601B (en) * 1952-11-08 1957-09-12 Eastman Kodak Co Process for the preparation of spinnable acrylonitrile polymerization products
NL202164A (en) * 1954-11-18
DE1009812B (en) * 1955-12-24 1957-06-06 Roehm & Haas Gmbh Process for the preparation of polymethacrylic acid salts
DE1027402B (en) * 1956-07-23 1958-04-03 Roehm & Haas Gmbh Process for the preparation of polymethacrylic acid salts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839081A (en) * 1973-08-22 1974-10-01 American Cyanamid Co Acrylic fiber having a high water absorbency and a wool-like hand and process therefore
US4255532A (en) * 1979-02-21 1981-03-10 American Cyanamid Company Acrylic polymer composition for melt-spinning

Also Published As

Publication number Publication date
FR1226782A (en) 1960-08-16
NL106028C (en)
DE1128982B (en) 1962-05-03
NL238772A (en)
BE578273A (en)

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