Frozen, lightweight curable sealant

摘要

A uniformly premixed sealant is extruded into a packaging form and allowed to pressure equilibrate prior to freezing. Upon warming the sealant begins to cure. The storage of the preformed sealant formulation under cold conditions arrests the activity of cure catalysts and accelerators mixed therethrough. The sealant is readily extruded into a preform shape containing a lightweight filler. A release film is provided to avoid contact with the sealant preformed in a shape during application to a substrate.

主权项

1. A preformed sealant package comprising:
a curable uniformly premixed one-part sealant formulation frozen at a temperature to preclude cure after a pressure equalization rest period comprising an amorphous lightweight filler having a specific gravity of 1.0 to 2.2 or an aerogel having a specific gravity of 0.05 to 0.07 and preformed to a shape adapted to secure to a substrate; and a first release film in contact with said formulation.