Rubber compositions containing high purity lignin derivatives

Details Rubber compositions containing high purity lignin derivatives Rubber compositions containing high purity lignin derivatives

1990-05-29

1993-03-23

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 72, 524 75, 530507, C08J 300, C08K 513, C08L 9700

Patent

active

051964600

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.

REFERENCES:
patent: 4287104 (1981-09-01), Dimitri
patent: 4764596 (1988-08-01), Lora et al.
Lora, et al., "Characteristics and Potential Applications of lignin Produced by an Organosolv Pulping Process", (1988), pp. 312-323.
Fries, "Development of Resins for the Rubber Industry", (1984), pp.1-23.
DePaoli, et al., "Sugar Cane Bagasse-lignin as Photo-Stabilizer for Butadiene Rubber".

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