Hot-setting wash-fast sealant for shell structures

Details Hot-setting wash-fast sealant for shell structures Hot-setting wash-fast sealant for shell structures

C - Chemistry, Metallurgy

09

K

C09K 3/10 (2006.01) C08L 23/08 (2006.01) C09J 123/08 (2006.01) C08L 9/00 (2006.01)

Patent

CA 2297229

The invention relates to hot-pumpable, hot-setting compounds with a base of solid ethylene-vinyl acetate copolymers, liquid reactive plasticisers with olefinically unsaturated double bonds and at least one peroxidic curing agent. The inventive compounds are particularly suitable for use as sealants for fine and coarse seams in vehicle construction. If an expanding agent is added to the inventive compounds, they can be used as underfeeding adhesives. The inventive sealants are preferably used for shell structures in automobile construction.

L'invention concerne des compositions thermodurcissables et thermopompables, à base de copolymères éthylène-vinylacétate, ainsi que de plastifiants réactifs liquides avec des liaisons doubles insaturées par oléfine et au moins un agent réticulant peroxyde. Ces compositions s'utilisent comme agents de scellement de soudures fines ou épaisses dans le cadre de la construction automobile. L'adjonction à ces compositions, d'agents porogènes, permet de les utiliser comme adhésifs de sous-garnissage. Les domaines d'application préférés de ces compositions sont le gros oeuvre dans la production automobile.

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