Abstract: The invention relates to ethylene diphosphinic acids and salts thereof of general formula A-P(O)(OX)—CR1R2—CR3R4—P(O)(OX)-A, in which A, H and/or CR5R6—OH, R1, R2, R3, R4, R5, R6 are the same or different, and denote independently from each other H, C1-C20 alkyl, C6-C20 aryl and or C6-C20 aralkyl, and X denotes H, an alkali metal, an element of the second main and secondary group, an element of the third main and secondary group, an element of the fourth main and secondary group, an element of the fifth main and secondary group, an element of the sixth secondary group, an element of the seventh secondary group, an element of the eight secondary group and/or a nitrogen base. Also disclosed are a method for producing same and the use thereof.

Abstract: The invention relates to an ethylenebis(hydroxyalkylphosphinic acid) and salts thereof. The acid has the general formula: A-P(O)(OX)—CR1R2—CR3R4—P(O)(OX)-A. Variable A is CR5R6—OH. Variables R1, R2, R3, R4, R5, and R6 are the same or different, and denote independently from each other H, C1-C20 alkyl, C6-C20 aryl, or C6-C20 aralkyl, so long as at least one of R1 and R2 is H and at least one of R3 and R4 is H. Variable X denotes H, an alkali metal, an element of main or transition group 2, an element of main or transition group 3, an element of main or transition group 4, an element of main or transition group 5, an element of transition group 6, an element of transition group 7, an element of transition group 8 and/or a nitrogen base. Also disclosed are a method for producing same and the use thereof.

Abstract: The invention relates to ethylene diphosphinic acids and salts thereof of general formula A-P(O)(OX)—CR1R2—CR3R4—P(O)(OX)-A, in which A, H and/or CR5R6—OH,R1,R2,R3,R4,R5,R6 are the same or different, and denote independently from each other H, C1-C20 alkyl, C6-C20 aryl and or C6-C20 aralkyl, and X denotes H, an alkali metal, an element of the second main and secondary group, an element of the third main and secondary group, an element of the fourth main and secondary group, an element of the fifth main and secondary group, an element of the sixth secondary group, an element of the seventh secondary group, an element of the eight secondary group and/or a nitrogen base. Also disclosed are a method for producing same and the use thereof.

Abstract: The invention relates to a polyolefin composition comprising a water releasing additive comprising hydrated inorganic or organic compounds as well as to a process for prevention of discoloration in polyolefins.

Abstract: Latent heat store based on an organic material which melts at a temperature in the range from 80 to 160° C. and comprises one or more polyolefin waxes which have been prepared via a metallocene-catalyzed reaction. The polyolefin waxes are preferably present as powder, granules or block in the material and are homopolymers of ethylene or of propylene or copolymers of propylene with ethylene or copolymers of ethylene with propylene or with one or more 1-olefins. The material has an enthalpy of fusion in the range from 70 to 280 J/g.

Abstract: The instant invention relates to liquid or low melting mixtures of phosphines with phenolic antioxidants as stabilizers for thermoplastic polymers. It further relates to amorphous compositions of phosphines with phenolic antioxidants and their use for stabilization of thermoplastic polymers.

Abstract: The invention relates to a styrene-hypophosphite adduct of the formula (I) {R9[C(Ph(R1, R2, R3, R4, R5))R6—CR7R8]n}mP(O)(O 1/x Mx+)(R10)2-m where R1, R2, R3, R4, R5, R6, R7 and R8 are identical or different and are hydrogen, alkyl, linear or branched, aryl, aralkyl, oxoalkyl, oxoaryl, aminoalkyl, and/or aminoaryl, R9 is H or a free-radical-initiator radical, R10 is H, Mx+ is Li, Na, K, Mg, Ca, Sr, Ba, Al, Ge, Sn, Bi, Sb, Pb, Ti, TiO, Zr, ZrO, Zn, Fe, Ce, Mn, and/or a protonated nitrogen base having the valency x, m=1 or 2, and n=from 1 to 100, and is the number of styrene units C(Ph(R1, R2, R3, R4, R5))R6—CR7R8 inserted into the P—H bond.

Abstract: The present invention relates to phosphorus compounds as stabilizers for polymers with respect to exposure to heat or mechanical stress during processing. In particular, even very small concentrations of from 25 to 350 ppm of bis(diphenylphosphino)-2,2-dimethylpropane are highly effective.

Abstract: This invention relates to salt reaction products resp. premanufactured mixtures of compounds, which contain one or more groups of formula (I), and organic acids resp. their derivatives, which contain one or more groups of formula (II), wherin the symbols have the meanings as given in claim I of the application. The invention further relates to a process for the preparation of saltlike reaction products and premanufactured mixtures. The saltlike reaction products and premanufactured mixtures can be used for stabilisation of polymers, in particularly polar polymers such as polyamides and polyesters, and for the improvement of the processing properties, heat stability, colour, gloss, surface and mechanical properties of these polymers.

Abstract: The instant invention relates to stabilizer compositions for thermoplastic polymers comprising a) at least one organophosphine, b) at least one 2-phenylbenzofuranone, and c) at least one sterically hindered piperidine based stabilizer (HAS), wherein the weight ratio of component a) to component b) to component c) is from 1:0.05:0.5 to 1:3:5. The instant compositions need an overall lower concentration as compared with the conventional phenol-containing formulations. In polyolefin articles, particularly in polyolefin-fibers, discoloration during processing and service life by both the formation of quinoid products and by action of NOx gases (gasfading) is avoided.

Abstract: The invention relates to a synergistic mixture comprising a) at least one compound from the group which consists of the phosphanes of the formula (I), (di/oligo)phosphanes of the formulae (II) and (III) and cyclophosphanes of the formula (IV) and b) at least one 6-hydroxychromane derivative of the general formula (V) and also to a process which stabilizes polymers with respect to thermooxidative degradation by addition and incorporation of this synergistic mixture.

Abstract: The invention relates to a synergistic mixture comprising a) at least one compound selected from the group consisting of the phosphites of the formula (I) to (V), of the phosphonites of the formulae (VI) to (IX) and (XV), of the di/oligophosphonites of the formulae (X) and (XI) and of the phosphinites of the formulae (XII) to (XIV), and b) at least one compound selected from the group consisting of the phosphanes of the formula (XVI), the di/oligophosphanes of the formulae (XVII) and (XVIII), and of the cyclophosphanes of the formula (XIX), and also to a process for stabilizing polymers with respect to thermooxidative degradation by addition and incorporation of a synergistic mixture of this type.

Abstract: This invention relates to salt reaction products resp. premanufactured mixtures of compounds, which contain one or more groups of formula (Ia) to (Ic), reaction products of and organophosphorus acids resp. their derivatives, which contain one or more groups of formula (II), wherin the symbols have the meanings as given in claim 1 of the application. The invention further relates to a process for the preparation of saltlike reaction products and premanufactured mixtures. The saltlike reaction products and premanufactured mixtures can be used for stabilisation of polymers, in particularly polar polymers such as polyamides and polyesters, and for the improvement of the processing properties, heat stability, colour, gloss, surface and mechanical properties of these polymers.

Abstract: A polyolefinic composition comprising as component a) one or more compounds of formula I to III in which each R1 independently is selected from linear or branched C1-30alkyl, C5-12cycloalkyl, C2-24alkenyl, C2-18alkoxyalkyl, C2-19methoxyalkanoyl, C7-30alkaryl, C7-30aralkyl, C4-24heteroaryl (where any one of the above substituents of R1 are unsubstituted or are substituted by 1 to 3 groups selected from C1-12alkyl, —OR4, —NR4R5, —COR4 and —COOR4); and C6-30aryl, unsubstituted or substituted by 1 to 5 groups R3 selected from C1-12alkyl, C1-8alkoxy, C5-6cycloalkyl, phenyl or phenoxy, —OR4, —NR4R5, —COR4 and —COOR4, R4 and R5 independently are selected from hydrogen, C1-30alkyl (linear or branched), C5-12cycloalkyl, C6-24aryl, C7-30alkaryl or C7-30aralkyl; A is a direct bond , a group —(P—R1)p— or an n-valent aliphatic or aromatic residue, (preferably C1-30alkylene (linear or branched), C5-12cycloalkylene, C7-30alkarylene, C7-30 aralkylene, C6-24arylene, a N-, O-, S-, or P-containing C6-24heteroarylene, C2-30

Abstract: The invention relates to a styrene-hypophosphite adduct of the formula (I)

Abstract: The present invention relates to phosphorus compounds as stabilizers for polymers with respect to exposure to heat or mechanical stress during processing. In particular, even very small concentrations of from 25 to 350 ppm of bis(diphenylphosphino)-2,2-dimethylpropane are highly effective.

Abstract: The invention relates to a synergistic mixture comprising

Abstract: The invention relates to a synergistic mixture comprising

Abstract: A polyolefinic composition comprising as component a) one or more compounds of formula I to III 1

Abstract: A novel process is described for preparing phosphonites or phosphinites by reacting a product of a Friedel-Crafts reaction with alcohols or phenols and separating off the byproducts formed. The novelty is the aftertreatment with a protic compound, or with an oxide, hydroxide, (hydrogen)carbonate resp. (hydrogen)phosphate of a metal or with a nitrogen containing compound (as defined in claim 1), or with any combination of one or more substances of the above mentioned compound classes. Products having a low halide and aluminium content are obtained which are distinguished by an improved clear solubility and an improved action as stabilizer for polymeric materials.