Bonding method for water-based formulations having enhanced characteristics
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United States of America Patent
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Sep 18, 2001
Issued Date -
N/A
app pub date -
Mar 15, 1996
filing date -
Jun 7, 1995
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Expired
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Abstract
Adhesive formulations are blends of aqueous polymer dispersions and a hydrophobic plasticizer. The blended dispersed polymers include at least one hard sulfonated polyester urethane, at least one soft non-sulfonated polyester urethane, and at least one polar non-polyurethane water-based polymer or copolymer. A high molecular weight elastomeric non-sulfonated polyurethane polymer and a crosslinker are optional further components in the blend. The formulations are useful as non-heat activating, one-component adhesives which generate excellent green strength, water and heat resistant bonds.
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