Abstract: The present invention relates to a synergistic additives mixture for producing calendered polyolefin articles, comprising A) at least one component from the group of peroxide-destroying phosphorus or sulfur compounds, B) at least one component from the group of phenolic antioxidants, C) at least one component from the group of sterically hindered amines, and D) if desired, further additives. Using this additive mixture prevents sticking to the hot roll surfaces and reduces the degradation of the polymer.

Abstract: The present application relates to storage-stable plastics additives which are prepared by cooling a mixture of 99.9 to 10% by weight of molten additive material and 0.1 to 90% by weight of crystalline additive material after a shaping process. The shaping process is carried out by forcing the mixture out of a tool provided with die openings, and cooling can be carried out on a cooled conveyor belt. Even after prolonged storage and/or handling, these plastics additives remain free-flowing and do not stick.

Abstract: The present invention relates to novel compounds of the formula (III) in which the substituents are as defined in the description, to a process for their preparation and to mixtures with other compounds. The compounds of the formula (III) are suitable for stabilizing organic material against the effect of light and heat.

Abstract: The present invention relates to a synergistic additives mixture for producing calendered polyolefin articles, comprising

Abstract: The present invention relates to a stabilizer mixture prepared by partially condensing PCl3 with 2,2′-dimethyl-4,4′-dihydroxy-5,5′-di-tert-butyldiphenyl sulfide, where the phosphorus content is from 2 to 4% by weight and the content of 2,2′-dimethyl-4,4′-dihydroxy-5,5′-di-tert-butyldiphenyl sulfide is from 0.5 to 50% by weight. The stabilizer mixture has very good solubility in organic solvents and in the polymer and has very good stabilizing action.

Abstract: The present invention relates to mixtures comprising the compound I in a proportion of 65-95% by weight, the compound II in a proportion of 5-35% by weight and the compound III in a proportion of 0-10% by weight wherein the substituents are as defined in the description, and to mixtures with other compounds. The mixtures are suitable for stabilizing organic material against the effect of light and heat.

Abstract: The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.

Abstract: The present invention relates to novel UV stabilizers of the formula (I) ##STR1## where the substituents are as defined in the description. These compounds are highly suitable for stabilizing organic material, such as plastics, surface coatings, paints and oils, against the action of light, radiation, oxygen and heat.

Abstract: The present invention relates to additive mixtures having a nucleating action for plastic compositions, comprising nucleating agents based on dibenzylidenesorbitol, or derivatives therof, and amido-functional compounds. The aldehydes formed from the nucleating agents by decomposition during processing and use of the plastics treated therewith are collected and bound by adsorption, absorption and/or chemcial reaction.

Abstract: The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting ofI: oligomerized 2,2,4,4-tetramethyl-20(oxiranylmethyl)-7-oxa-3,20-diazadispiro?5.1.11.2!he neicosan-21-one,II: condensation product of 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triaz ine and 1,2-bis(3-aminopropylamino)ethane, andIII: condensation product of 1-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid.These plastics exhibit a reduced rate of uptake of sulfur compounds.The invention further relates to shaped articles made from these plastics.

Abstract: The present invention relates to a process for preparing the .alpha. crystal modification of 2,2',2"--nitrilo?triethyltris(3,3',5,5"--tetra--tert--butyl--1,1'--bipheny l--2,2'--diyl) phosphite! (abbreviated as NTTBP) of the formula ##STR1## which comprises dissolving the NTTBP in the form of its melt, its amorphous solid-phase modification or its .beta. crystal modification, hot, at 40 to 100.degree. C., in short-chain ketones having 3 to 7 carbon atoms, such as methyl ethyl ketone or, in particular, acetone, and then initiating crystallization by cooling to room temperature.

Abstract: Polyvinyl butyrals (PVBs) with improved thermal stability and improved light resistance contain as stabilizers polynuclear phenols which phenolic radicals have a quaternary carbon atom in the para-position to the phenolic hydroxyl group and if desired in combination with synergistically acting, nitrogen-containing, sulfur-containing or phosphorus-containing co-stabilizers of the types a) to d). The use of the resulting films of low yellowness as interlayer films having substantially reduced yellowing for the production of laminated glasses and glass composites of silicate glass sheets is described.

Abstract: A polyphenylene ether molding composition which contains at least one alkylsulfonate as antistatic and at least one light stabilizer of the formula III ##STR1## has better antistatic properties and greater light stability than is the case for simultaneous use of alkylsulfonates and previously known light stabilizers, such as, for example, tetramethylpiperidinyl derivatives.

Abstract: A dibenzo-[c,e] [1,2] oxaphosphorine of the formula I and process of making said compound ##STR1## wherein n=1 or 2 and in which R.sup.1 is a monovalent or divalent aromatic radical wherein a Grignard compound R.sup.1 (MgHal).sub.n is reacted with 6-chloro-6H-dibenzo[c,e][1,2] oxaphosphorine.This compound optionally with phenolic antioxidants, provides stabilization in polymers.

Abstract: In plastic molding compositions, in particular those based on olefin polymers, which contain phenolic stabilizers and metal ions as catalyst residues, the discoloration at the processing temperature is reduced if they contain triglycerol or ditrimethylolpropane as catalyst deactivators.

Abstract: A process for the preparation of aryl phosphonites of the formula V ##STR1## wherein the radicals and n are defined in the disclosure. The invention further relates to a plastic molding composition, in particular a polyolefin molding composition containing aryl phosphonites of the formula V.

Abstract: Diarylphosphinous acid aryl esters are made by the disclosed process. These compounds are useful for stabilizing plastics, in particular polymerization plastics, and hence can be incorporated into a plastic molding composition.

Abstract: Novel polymeric polyalkyl-1-oxa-diazaspirodecanes of the formula I ##STR1## are very effective stabilizers for natural any synthetic polymers. They have very low volatility, high migration resistance and high thermal stability.

Abstract: A process for the preparation of organophosphorus derivatives of 2,4-di-tert-butylphenol with a high proportion of organophosphorus derivatives of biphenyl, which comprises reacting, in a first step, a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35, under Grignard conditions with magnesium to form the corresponding Grignard compound and this is further reacted in a second step with bis(2,4-di-tert-butylphenyl) chlorophosphite with the formation of a mixture in which at least 50% by weight of the phosphorus is combined in the form of tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenylenediphosphonite. The invention further relates to a polyolefin molding composition containing tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenylenediphosphonite which was prepared by reaction of a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 with magnesium to form the Grignard compound and by subsequent reaction with bis(2,4-di-tert-butylphenyl) chlorophosphite.

Abstract: By dividing the known condensation of acetoacetic acid diol esters with phenols into two process steps, a reduction in the cost of the entire process can be achieved.Methyl acetoacetate is first condensed with a phenol and the methyl 3,3-bis(4-hydroxyalkylphenyl)butanoate formed is reacted with the desired diol in the presence of a transesterification catalyst. In this way only one acetoacetic ester is necessary for various final products. The final products are useful stabilizers for plastics, in particular polyolefins.