POLYURETHANE ADHESIVE FOR BATTERY PACKAGING MATERIAL, BATTERY PACKAGING MATERIAL, BATTERY CONTAINER, AND BATTERY
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United States of America Patent
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Dec 31, 2015
app pub date -
Feb 20, 2014
filing date -
Feb 25, 2013
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Abstract
An adhesive with which a battery packaging material capable of maintaining a strong adhesive strength even after a long-term endurance test and having an excellent moldability can be formed is provided. A polyurethane adhesive for a battery packaging material according to the present invention includes a main agent and a curing agent, in which the main agent contains an acrylic polyol (A) having a number-average molecular weight of 10,000 to 100,000 and a hydroxyl value of 1 to 100 mgKOH/g, and an equivalent ratio [NCO]/[OH] of an isocyanate group derived from an aromatic polyisocyanate (B) contained in the curing agent to a hydroxyl group derived from the acrylic polyol (A) is 10 to 30.
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