Contains The Structure (c)-p(=x) (x) (n-q) Where Q Is A Radical Containing An Atom Other Than C Or H, Or Contains A Ring Composed Solely Of Carbon Atoms Or Contains An Ethylenic Group (9/44c; 9/44c1; 9/44c2; 9/44c3; 9/44c4; 9/44c7) Patents (Class 987/142)