Pigment containing polyolefin composition

Claim 1

A polymer composition which comprises: a polyolefin polymer containing from 0.01-2 weight percent based on said polymer of a quinophthalone pigment having the formula ##SPC25## or ##SPC26## wherein X represents hydrogen or halogen, Y represents halogen, Z 1 represents hydrogen, halogen, lower alkyl or lower alkoxy, Z 2 represents hydrogen, or halogen and n represents 0 or an integer of 1-4; and 0.005-5% by weight of an ultraviolet light absorbing imidazolidine compound or an ultraviolet light absorbing piperidine compound selected from the group consisting of a piperidine compound having the formula: ##SPC27## wherein R 1 and R 2 are the same or different and each represents an alkyl group or both form a saturated alicyclic ring having 5-7 carbon atoms while sharing a common carbon atom, or form a ring having the formula ##SPC28## n' is an integer of 1, 2 or 3; and R 3 represents, when n' = 1, a monovalent acyl group, an N-substituted carbamoyl group, an N-substituted thiocarbamoyl group, a monovalent group formed by removing one hydroxyl from an oxyacid; alkyl, cycloalkyl, aralkyl, aryl or a group having the formula ##SPC29## wherein R 1 and R 2 are as defined above; R 3 represents, when n' = 2, a diacyl, a dicarbamoyl, a bisthiocarbamoyl, a carbonyl group, or a divalent group formed by removing two hydroxyl groups from an oxyacid; an alkylene, an arylene, or an arylenedialkylene group; or R 3 represents, when n' = 3, a triacyl group, a tricarbamoyl group, a tristhiocarbamoyl group, a trivalent group formed by removing three hydroxyl groups from an oxyacid; an alkanetolyl group, an arylinetolyl group or an arylinetolyl trialkylene group; piperidine-4-spiro-hydantoin derivatives having the formula: ##SPC30## wherein R 1 ' and R 2 ' are the same or different and each represent an alkyl group or both form a saturated alicyclic ring having 5-7 carbon atoms while sharing a common carbon atom, or form a ring having the formula ##SPC31## wherein R 5 and R 6 are the same or different and each represents an alkyl group or both form a saturated alicyclic ring having 5-7 carbon atoms while sharing a common carbon atom; R 3 ' and R 4 ' are the same or different and each represents hydrogen, an alkyl group, a cycloalkyl group or an aryl group and can have an oxirane oxygen; a piperidine derivative or organic acid salt thereof having the formula ##SPC32## wherein R 1 and R 2 are the same or different and each represents an alkyl group or both form a saturated alicyclic ring having 5-7 carbon atoms while sharing a common carbon atom, or form a ring having the formula ##SPC33## and R 3 " and R 4 ' are the same or different and each represents cyano, aryl, alkoxycarbonyl, acyl or carbamoyl; a piperidine derivative or organic acid salt thereof having the formula ##SPC34## wherein R 1 and R 2 are as defined in formula (3) and X' represents ##EQU2## and an iminopiperidine derivative or organic acid salt thereof having the formula: ##SPC35## wherein R 1 and R 2 are as defined in formula (3), n" represents an integer of 1 or 2, and R 3 '" represents, when n" = 1, alkyl, aralkyl, cycloalkyl, aryl, arylamino, ureido, thioureido, or a group having the formula: ##SPC36## wherein R 1 and R 2 are defined in formula (3), or R 3 '" represents, when n" = 2, a straight chain or a branched chain alkylene, cycloalkylene, arylene, or a group having the formula: ##SPC37## wherein X" represents --O--, --S--, --S--S--, --NH-- or --(CH 2 ) m -- and m represents 0 or an integer from 1-6.