Rubber compositions containing high purity lignin derivatives
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United States of America Patent
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Mar 23, 1993
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N/A
app pub date -
May 29, 1990
filing date -
May 29, 1990
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Expired
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Abstract
A tackifier composition for use in rubber compounds is disclosed. The tackifier comprises a pure lignin with a water solubility of up to 1% by weight and a carbohydrate level of less than 50% by weight. In another embodiment of the invention, the pure lignin functions as both a tackifier and an antioxidant. In yet another preferred embodiment of the invention, the improved tackifier produces synergistic results when blended with a commercial tackifier, and the antioxidant likewise yields synergistic results when mixed with a commercial antioxidant.
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