Abstract: A stackable bowl and closure combination including two bowl shaped members one of which is substantially larger, i.e. deeper than the other and wherein the shallower of same is adapted to closure the larger in either an upright or inverted position. When the shallower bowl is positioned upon the larger one in an upright position, both bowls may be employed to store foodstuffs, whereas when the former is inverted only the larger bowl will function in a storage sense but the capacity thereof is substantially increased. Furthermore, the smaller of the bowls may be closured and sealed for storage purposes by a generally planar seal employing a peripherally extending U-shaped sealing groove. Likewise, the combined bowls may be used as serving dishes subsequent there separation one from the other.

Abstract: In the production of ethylene-vinyl acetate copolymers in a free radical catalyst initiated high pressure process, explosive decomposition is prevented by contacting the reactor effluent downstream of the reactor outlet with small amounts of a hindered phenolic compound, separating unreacted monomer from the mixture of copolymer, unreacted monomer and scavenger in a separation zone and recycling the separated monomer to the reactor.

Abstract: A ball type check valve is provided featuring a simple rugged structure which can be easily fabricated and finished to have excellent fatigue strength and resistance to the stresses of continually repeating pressure fluctuations. The key to the success of this valve is the basic monobloc body used therein. Thus, one single compact body block is fashioned with a longitudinal opening extending therethrough, the median portion of which is a smooth cylindrical bore designed to house the ball stop, biasing spring and associated movable valve parts while the approach sections of the opening leading thereto from either end are of larger cross-section. The valve is then completed by incorporating upstream and downstream tail pieces enclosed within said approach sections and held in end to end direct contact sealing relationship with annular shoulder areas at either end of said median portion by means of suitable back-up attachment devices engaged with said body block.

Abstract: A polyolefin composition having excellent stability against degradation caused by exposure to heat and oxygen in the presence of copper, which composition is stabilized with a synergistic stabilizer system containing at least one phenolic antioxidant and calcium stearate.

Abstract: Novel coupling agents for use in filled polymers to improve physical properties e.g. melt flow and impact strength, which agents are organic borates containing at least one functional group reactive with the filler and at least one functional group compatible with the polymer.

Abstract: Polyolefins pigmented with copper phtalocyanine complexes are rendered stable against heat and oxidation by addition of a metal chelating agent.

Abstract: The insulation of electrical cables which are utilized in environments likely to cause extraction of stabilizer systems is achieved through the use of compositions in which a disubstituted alkylhydroxyphenyl alkanoyl hydrazine is used as extraction resistant stabilizer for ethylene-propylene copolymer coating materials. Equivalent nomenclature for the preferred stabilizer is disubstituted di-t-butyl hydroxy hydro cinnamoyl (DTBHC) hydrazine. The DTBHC hydrazine is substantially the only stabilizer used in the stabilized compositions.