Sulphur containing polyesters and their uses

C - Chemistry – Metallurgy – 07 – C

Patent

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400/1606, 402/31

C07C 69/52 (2006.01) C08G 75/14 (2006.01) C08G 75/26 (2006.01) C08L 81/04 (2006.01)

Patent

CA 1053694

PRECIS DE LA DIVULGATION Nouveaux polyesters-polythiols et les polysulfures correspondants, dans lesquels le groupe -SH ou le soufre se trouve dans le reste de l'alcool de la fonction ester. Ces polyesters dérivent des polyacides aliphatiques, saturés ou non, dont la molécule contient au moins 15 atomes de carbone. L'alcool est en C1 à C12. Ils sont préparés par l'action d'un mercapto-alcanol sur le polyacide correspondant, au sein d'un liquide qui donne un mélange azéotrope avec l'eau. Ces produits conviennent comme adjuvants d'asphaltes, bitumes, etc. utiles pour des revêtements, mastics, joints et similaires.

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