ACETAL COPOLYMER AND METHOD OF PRODUCING THE SAME

Title:

ACETAL COPOLYMER AND METHOD OF PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/1990/015842

Kind Code:

A1

Abstract:

An acetal copolymer having a viscosity number of 0.1 to 10 dl/g and an excellent isotropy and being constituted of a polyacetal unit and a particulate cross-linked polymer unit is produced by reacting a polyacetal particulate cross-linked polymer other than polyacetal, said polymer having mean particle diameter of 0.01 to 10 $g(m) and functional groups selected from among hydroxyl, carboxyl, amino, amide, alkoxy, acid anhydride, and epoxy groups, to unite them with each other through said functional groups. Another acetal copolymer having a viscosity number of 0.1 to 10 dl/g and being constituted of a polyacetal unit and another polymer unit is produced by either homopolymerizing formaldehyde or trioxane or copolymerizing formaldehyde or trioxane with a cyclic ether in the presence of a polymer other than polyacetal, said polymer having a mean dispersion diameter of 0.01 to 2,000 $g(m) and functional groups selected from among hydroxyl, carboxyl, amino, amide, alkoxy, acid anhydride, and epoxy groups, to unite the formed polyacetal with the polymer other than polyacetal through said functional groups.

Inventors:

SONE TATSUO (JP)
HATA TADASHIGE (JP)
MATSUZAKI KAZUHIKO (JP)

Application Number:

PCT/JP1990/000792

Publication Date:

December 27, 1990

Filing Date:

June 18, 1990

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)

International Classes:

C08G2/08; C08G2/38; C08L59/00; C08L9/00; C08L23/00; C08L33/06; C08L51/06; C08L53/02; C08L55/02; (IPC1-7): C08G2/08; C08L59/00

Foreign References:

JPS6018511A	1985-01-30
JPS6040111A	1985-03-02
JPS50119055A	1975-09-18

Other References: