Formulations containing polypropylene, 0.05-0.1 % phosphite, 0-1.25% phenolic antioxidant, 0-0.1 % dialkylhydroxylamine, 0.05-0.1 % calcium stearate, 0-1.25% UV absorber, 0---1.25% hindered amine are dry blended in a tumble dryer, extruded on a Superior/MPM 1" single screw extruder with a general all-purpose screw (24: 1 LID) at 475° F. (246° C.), cooled in a water bath and pelletized. The resulting pellets are spun into fiber at about 475° F. (246° C.) on a HILLS Research Fiber Extruder (Model# REM-3P-24) fitted with a 41 hole, delta configua- tion spinneret. The spun tow is stretched at a draw ratio of 3.2:1 producing a final denier of 615/41. 

Fiber samples are knitted into socks on a Lawson› HemphillFiber Analysis Knitter, cut into appropriate lengths and exposed in an Atlas Ci65 Xenon Arc Weather-O-meter at 89° C. black panel temperature, 0.55 W/m 2 at 340 nanometers and 50% relative humidity (Society of Automo› tive Engineers-SAE J 1885 Test Procedure). 

Fiber samples are tested by performing color measure› ments on an Applied Color Systems spectrophotometer by reflectance mode according to ASTM D 2244-79. Identical, but separate, fiber samples are examined for catastrophic failure and the time to failure is recorded. 

The samples containing the instant compounds exhibit good stabilization performance against the deleterious effects of UV light. 

Other socks of propylene fiber as prepared in Example 79 are exposed in a Blue M forced draft oven at 120° C. Failure is determined by the criterion set forth in Example 79. The longer it takes for the catastrophic failure to occur, the more effective is the stabilizing system. 

The socks containing the instant compounds exhibit good thermal stabilization efficacy. 

Film grade polyethylene is dry blended with approxi- mately 10% by weight of the test additives, such as the compound of Example 51, and then melt compounded at 200° C. into "Masterbatch" pellets. The fully formulated "Masterbatch" pellets are dry blended with polyethylene resin to get the desired final stabilizer concentrations. Typi- cal formulations contain the instant compounds at levels from 0.05% to 2.0%, a metal stearate such as calcium stearate at 0.05% to 0.5%, a phosphite at 0% to 0.1 %, a phenolic antioxidant at 0% to 1.25%, an N,N› dialkylhydroxylamine at 0% to 0.1 % and optionally a hin› dered amine at 0% to 2.0%. The This stabilized fully formulated resin is then blown at 200° C. into a 150 micron thick film on a DOLCI film line. 

The blown films are exposed in an Atlas Xenon-Arc WeatherOmeter according to ASTM G26 at 63° C. bpt, 0.35 W/m 2 at 340 nm with no spray cycle. Films are tested periodically for any change in elongation using an Instron 112 tensile tester. Failure in this test is determined by observation of the loss of % elongation in the film. The longer it takes for this loss to occur, th more effective is the stabilizer system. 

The films containing the instant compound mixture show good light stabilizing efficacy. 

Film grade polyethylene is dry blended with 10% loading of the test additives, such as the compound of Example 51, 

## EXAMPLE 80 

## EXAMPLE 81 

## EXAMPLE 82 

as described in Example 81, and then melt compounded at 200° C. into fully formulated master batch pellets. The master batch pellets are dry blended with the polyethylene resin to get the final stabilizer concentration. The fully formulated resin is then blown at 200° C. into a 150 micron thick film using a DOLCI film line. 

The resulting films are exposed on a greenhouse on galvanized iron backing. Treatment includes applications of pesticides on a regular basis (i.e. sodium N-methyidithiocarbamate, VAPAM $^{1 }$every six months and SESMETRIN$^{1 }$every month). Performance is measured by monitoring the percent residual elongation. Failure is defined as the time to a 50% loss of original elongation. 

The films containing the instant compounds show good resistance to pesticides. 

Master batch pellets prepared as described in Example 81 are dry blended into polyethylene resin to get the final stabilizer cocentration. The fully formulated resin is then blown at 200° C. into a 25 micron thick film using a DOLCI film line. 

The resulting films are exposed on a soil to simulate agricultural mulch film conditions. Treatment includes expo› sure to methyl bromide fumigant for three days at 60 g/m 3 • Performance is measured by monitoring the time to physical embrittlement. 

The films containing the instant compounds show good resistance to fumigants. 

Greenhouse film samples are prepared as described in Example 81, but in addition to the instant compounds also contain a metal stearate or a metal oxide. Typical formula› tions contain from 0.05 to 2% by weight of the instant hindered amines, 0.05 to 0.5% of a metal stearate such as calcium oxide, and 0.05 to 0.5% of a metal oxide such as zinc oxide or magnesium oxide. 

Effectiveness is monitored as described in Example 82. The films containing the instant compounds exhibit good light stability. 

Polypropylene fiber is prepared as described in Example 79. In addition to the instant compounds, selected haloge› nated flame retardants are also included in the formulation. The flame retardants are tris(3-bromo-2,2-bis(bromomethyl) propyl)phosphate, decabromodiphenyl oxide, ethylene bis› ( tetrabromophthalimide ), or ethylene bis-( dibromo› norbornanedicarboximide ). 

Using the criterion for light stabilization described in Example 79, the socks knitted from the polypropylene fiber containing the instant compounds exhibit good light stabil› ity. 

Molding grade polypropylene is dry blended with test additives and then melt compounded into pellets. In addition to the instant compounds, selected flame retardants are also included. The flame retardants are tris(3-bromo-2,2-bis (bromomethyl)propyl)phosphate, decabromodiphenyl oxide, ethylene bis-(tetrabromophthalimide ), or ethylene bis-( dibromonorbomanedicarboximide ). The pelletized fully formulated resin is then injection molded into test specimens using a Boy SOM laboratory model injection molder. 

## EXAMPLE 83 

## EXAMPLE 84 

## EXAMPLE 85 

## EXAMPLE 86 

