C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/22 (2006.01) C08K 5/33 (2006.01) C08L 21/00 (2006.01)
Patent
CA 2400194
A process for preparing a sealant composition includes mixing an elastomer in the substantial absence of an organic solvent and separately dispersing a quinoid curing agent in a polymer having a molecular weight below about 5,000 to form a curing agent concentrate. Thereafter, combining the curing agent concentrate with the elastomer to form the sealant composition. The composition is a rubber masterbatch having many applications and is, advantageously, substantially free from organic solvents.
L'invention concerne un procédé de préparation d'une composition étanche. On produit cette composition en mélangeant un élastomère, en l'absence quasi totale de solvant organique, et en dispersant séparément un agent de vulcanisation quinonique dans un polymère, dont le poids moléculaire est inférieur à 5 000 environ, afin de former un concentré d'agent de vulcanisation. Ensuite, on associe ledit concentré d'agent de vulcanisation à l'élastomère, en vue de fabriquer la composition étanche. Cette composition est un mélange mère de caoutchouc présentant de nombreuses applications et dont l'intérêt est d'être quasiment dépourvu de solvants organiques.
Domer Christine L.
Hergenrother William
Hogan Terrence
Bridgestone Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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