Title:
MANUFACTURE OF BITUMENNPOLYMER COMPOUND
Document Type and Number:
Japanese Patent JPS5388022
Kind Code:
A
Abstract:
Process for the preparation of bitumen-polymer compositions characterized in that 80 to 98% by weight of a penetration bitumen comprised between 30 and 220 and 2 to 20% by weight is brought into contact at a temperature comprised between 130 and 230º c. A block copolymer block of average molecular mass between 30,000 and 300,000 which corresponds to the theoretical formula sx-b, in which s represents styrenic structural motifs b, represents structural motifs of a conjugated diene and are integers, the mixture obtained being kept under stirring for at least two hours and then from 01 to 3% by weight of sulfur is added in relation to the bitumen and the agitation of the mixture thus obtained is maintained for at least twenty minutes. (Machine-translation by Google Translate, not legally binding)
Inventors:
POORU MARUDONADO
JIYAAN MA
TORUN KIE FUYUN
JIYAAN MA
TORUN KIE FUYUN
Application Number:
JP15870977A
Publication Date:
August 03, 1978
Filing Date:
December 27, 1977
Export Citation:
Assignee:
ELF UNION
International Classes:
C08L23/00; C08L51/00; C08L51/02; C08L77/00; C08L95/00; C08L101/00; (IPC1-7): C08L95/00
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