GB873263A - Process for preparing condensation products of polyvinyl alcohol and carbonyl compounds - Google Patents

Process for preparing condensation products of polyvinyl alcohol and carbonyl compounds

Info

Publication number
GB873263A
GB873263A GB29260/59A GB2926059A GB873263A GB 873263 A GB873263 A GB 873263A GB 29260/59 A GB29260/59 A GB 29260/59A GB 2926059 A GB2926059 A GB 2926059A GB 873263 A GB873263 A GB 873263A
Authority
GB
United Kingdom
Prior art keywords
carbonyl compound
polyvinyl alcohol
stage
precipitate
condensation products
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
GB29260/59A
Inventor
Inoue Shojiro Iwai Hiroz Kaoru
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co 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
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority claimed from DE19591745756 external-priority patent/DE1745756C2/en
Publication of GB873263A publication Critical patent/GB873263A/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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/28—Condensation with aldehydes or ketones

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Condensation products of polyvinyl alcohol with one or more carbonyl compounds selected from aldehydes and ketones are prepared in an aqueous phase in the presence of an acid catalyst by adding a proportion of said carbonyl compound(s) to the aqueous solution of polyvinyl alcohol at a temperature above 10 DEG C., said proportion being insufficient to cause the resulting condensation product to precipitate, the remainder of said carbonyl compound(s) being added at -6 DEG C. to +20 DEG C. and at a lower temperature than that at which the first stage of the reaction is carried out, in order to complete the condensation reaction and precipitate the resulting condensation product. The carbonyl compound may be propionaldehyde, valeraldehyde, acetaldehyde, caproaldehyde, butyraldehyde, heptaldehyde, citral, formaldehyde, caprylaldehyde, acrolein, crotonaldehyde, bezaldehyde, salicylaldehyde, furfural, pelargonic aldehyde, acetone, cyclohexanone, acetophenone, or p-nitro or p-chlorobenzaldehyde. The polyvinyl alcohol may contain some residual ester groups and the difference of temperature between the two stages is preferably over 5 DEG C. The acid catalyst may be hydrochloric, sulphuric, phosphoric, boric, acetic, oxalic or citric acids or acid salts such as ammonium chloride, aluminium or zinc chloride or sodium bisulphate. The carbonyl compound used in the second stage may be different from that in the first stage and mixtures may be used. The carbonyl compound may be added incrementally in each stage. The product is in the form of granules or a fine powder.
GB29260/59A 1959-08-28 1959-08-26 Process for preparing condensation products of polyvinyl alcohol and carbonyl compounds Expired GB873263A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES0064650 1959-08-28
DE19591745756 DE1745756C2 (en) 1959-08-28 1959-08-28 Process for the preparation of condensation products from polyvinyl alcohol and at least one carbonyl compound

Publications (1)

Publication Number Publication Date
GB873263A true GB873263A (en) 1961-07-19

Family

ID=25754967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29260/59A Expired GB873263A (en) 1959-08-28 1959-08-26 Process for preparing condensation products of polyvinyl alcohol and carbonyl compounds

Country Status (1)

Country Link
GB (1) GB873263A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365005A1 (en) * 1972-12-30 1974-07-11 Sekisui Chemical Co Ltd METHOD FOR MANUFACTURING POLYVINYL ACETALS
EP0000699A1 (en) * 1977-07-20 1979-02-21 Hoechst Aktiengesellschaft Process for preparing polyvinyl butyral with improved properties.
EP0088013A1 (en) * 1982-02-23 1983-09-07 Saint Gobain Vitrage International Process for the preparation of polyvinyl butyral
EP0274075A2 (en) * 1986-12-23 1988-07-13 Hoechst Aktiengesellschaft Polyvinyl acetal, light-sensitive composition containing it and reproduction material made therefrom
WO1994013710A1 (en) * 1992-12-04 1994-06-23 Monsanto Company Process for producing mixed poly(vinyl acetal)s
US5594069A (en) * 1992-12-04 1997-01-14 Monsanto Company Process for producing mixed poly(vinyl acetal)s

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365005A1 (en) * 1972-12-30 1974-07-11 Sekisui Chemical Co Ltd METHOD FOR MANUFACTURING POLYVINYL ACETALS
EP0000699A1 (en) * 1977-07-20 1979-02-21 Hoechst Aktiengesellschaft Process for preparing polyvinyl butyral with improved properties.
EP0088013A1 (en) * 1982-02-23 1983-09-07 Saint Gobain Vitrage International Process for the preparation of polyvinyl butyral
US4652320A (en) * 1982-02-23 1987-03-24 Saint Gobain Vitrage Process for making polyvinyl butyral glass laminates
EP0274075A2 (en) * 1986-12-23 1988-07-13 Hoechst Aktiengesellschaft Polyvinyl acetal, light-sensitive composition containing it and reproduction material made therefrom
EP0274075A3 (en) * 1986-12-23 1990-07-04 Hoechst Aktiengesellschaft Polyvinyl acetal, light-sensitive composition containing it and reproduction material made therefrom
WO1994013710A1 (en) * 1992-12-04 1994-06-23 Monsanto Company Process for producing mixed poly(vinyl acetal)s
US5594069A (en) * 1992-12-04 1997-01-14 Monsanto Company Process for producing mixed poly(vinyl acetal)s

Also Published As

Publication number Publication date
DE1745756B1 (en) 1970-05-14

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