Process of insulating a body cavity
AssigneeExxon Chemical Patents Inc.
InventorJan R. Soderberg
Life of this patent
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Abstract
A foamable composition for in situ expansion for example in a car pillar includes a base polymer derived of ethylene and an olefinically unsaturated acrylic ester with an M1 of from 0.1 to 6 and containing from 10 to 40% of ester derived units. The composition is foamed and cross-linked to adhere to the car pillar interior and provide closed cell foam acting as a moisture-sound barrier.
Claims9
A shaped, foamable part mounted in an open space of a vehicle body comprising a mixture of at least 65 wt.% of a base polymer containing units derived of ethylene and an olefinically unsaturated methyl acrylate having a melt index of from 0.1 to 6 and containing from 10 to 40 percent by weight of methyl acrylate, a cross-linking agent, a chemical blowing agent and a blowing agent activator so that the part is foamable to a closed cell foam and curable concurrently at a temperature between 110.degree. and 190.degree. C.
The part according to clam 1 wherein aid mixture further contains a low density polyethylene polymer.
Dependencies are inferred from the claim text.