Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-04-05
1984-11-20
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523206, 523217, 524227, 524255, 524291, C08L 6702
Patent
active
044839480
ABSTRACT:
Under thermal aging conditions of reinforced polymeric materials, some reinforcements are not as effective as others in providing longevity for the fiber reinforced polymeric materials. A method is provided for incorporating an additional amount of antioxidant into the polymeric materials before the reinforcement is added to the polymeric materials or into an aqueous treating solution for the fibrous reinforcement. The antioxidant is of low volatility and good thermal resistance, and when added to the polymer directly is used in an amount greater than three parts per hundred parts of the polymer (PHR). When the antioxidant is added to the aqueous treating solution for treating the fibrous reinforcements, the antioxidant is in the form of an oil-in-water emulsion.
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Pertilla Theodore E.
PPG Industries Inc.
Stachel Kenneth J.
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