Description: 522 synthetic resins or natural rubbers -- part of the class 520 series / 522 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (1) compositions to be polymerized by wave energy wherein said composition contains a rate-affecting material; or compositions to be modified by wave energy wherein said composition contains a rate-affecting material; or processes of preparing or treating a solid polymer utilizing wave energy (90) processes involving a polyurethane having terminal ethylenic unsaturation as reactant or as solid polymer; or compositions therefore (94) with aldehyde or aldehyde derivative reactant, condensate or solid polymer thereof
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