Description: 523 synthetic resins or natural rubbers -- part of the class 520 series / 523 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (1) processes of preparing a desired or intentional composition of at least one nonreactant material and at least one solid polymer or specified intermediate condensation product, or product thereof (124) composition containing an additive which enhances degradation by environmental stimuli or process of preparing
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