초록 ▼

Disclosed are curable sealant compositions for coating a conductive bushing for a lead-acid cell or battery having positive and negative plates disposed within a container and a cover, the conductive bushing being molded into the cover and providing electrical communication with at least one of the

Disclosed are curable sealant compositions for coating a conductive bushing for a lead-acid cell or battery having positive and negative plates disposed within a container and a cover, the conductive bushing being molded into the cover and providing electrical communication with at least one of the plates, the bushing presenting an interface with the exterior of the bushing and the cover. The sealant compositions comprise a sealing elastomer in an amount from about 1% to about 15% by weight and a solvent in an amount of up to about 99% by weight. In accordance with the invention, the sealant composition is a terpene solvent, preferably a cyclic terpene and more preferably D-limonene. The sealant compositions preferably further comprise a reinforcing agent in an amount of about 1% to about 15% by weight. In use, at least a portion of a bushing is coated with the sealant composition, and the sealant composition is cured. The bushing is insert-molded within a nonconductive plastic substrate to form a cover for a battery or cell, such that the sealing elastomer seals the interface between the bushing and the substrate.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a cover for a cell or battery, the cover including a nonconductive plastic substrate having an interior surface and an exterior surface and having a first bushing disposed within said substrate for allowing electrical communication between said interio

[ What is claimed is:] [1.] A method for making a cover for a cell or battery, the cover including a nonconductive plastic substrate having an interior surface and an exterior surface and having a first bushing disposed within said substrate for allowing electrical communication between said interior surface and said exterior surface and a second bushing disposed within said substrate for allowing electrical communication between said interior surface and said exterior surface, each of said bushings having an exterior and presenting an interface between said exterior of said bushing and said plastic substrate, the method comprising the steps of:(a) providing first and second bushings;(b) for each of said first and second bushings,(1) applying to at least a portion of said exterior of said bushing a curable sealant composition which comprises:a terpene solvent; anda sealing elastomer dissolved therein; and(2) curing said sealant composition; and(c) insert molding said first bushing and said second bushing into a non-conductive substrate to thereby form a cell cover, whereby said sealing elastomer forms a seal at said interfaces.