Abstract: An alkyltin compound of specified formula which has utility as an excellent stabilizer for a halogen-containing resin. The alkyltin compound has from 1-3 terminal thiol groups.

Abstract: A process is disclosed for reducing the concentration of a dialkyl ether in a mixture comprising the dialkyl ether and a dialkyl peroxide wherein the process comprises treating said mixture with a strong acid.

Abstract: Disclosed herein is a process for improving mechanical properties and thermal stability of composites of poly(vinyl chloride) and at least one natural fiber comprising including in said composite an agent comprising a polymer or copolymer comprising at least one alkali metal salt of at least one polymerized ethylenically unsaturated carboxylic acid. Articles of manufacture comprising the stabilized PVC are also disclosed.

Abstract: Disclosed herein is a process for improving mechanical and chemical properties of a composite of poly(vinyl chloride) and at least one natural fiber comprising adding to said composite at least one heat stabilizer selected from the group consisting of: A) alkyltin reverse esters-sulfides; B) alkyltin alkyl maleates; and C) complex mixtures of calcium and/or zinc carboxylates/acetylacetonates.

Abstract: An organic peroxide stabilizing composition comprises an organic peroxide and an organic peroxide stabilizing compound selected from one of the following general formulas (I) or (II): R1CH?CH(CH2)m(CH?CH)n(CH2)oR2??(I) R4C?C—C(O)OR5??(II) or mixture thereof wherein R1 is hydrogen, alkyl of from 1 to about 10 carbon atoms, or aryl of from 6 to about 12 carbon atoms, optionally substituted with at least one halogen, lower alkyl, or hydroxy group; R2 is hydrogen, —OH, —C(O)R3 or —C(O)OR3 in which R3 is hydrogen or lower alkyl; R4 and R5 each independently has one of the meanings of R1 and, additionally, R4 can be —C(O)OR3; wherein R3 has one of the same meanings as above and m is 0 or an integer of from 1 to about 20, n is 0 or 1 and o is 0 or an integer of from 1 to about 20 in an amount sufficient to retard the rate of decomposition of the organic peroxide.

Abstract: A polymer composition is disclosed that comprises a propylene polymer having a melt flow index in the range from 4 to 120 decigrams/minute, di-t-amyl peroxide, and at least one decomposition product of said peroxide, whereby said composition has agreeable odor characteristics.

Abstract: A method is disclosed for stabilizing a halogen-containing polymer wherein the method comprises adding to said polymer a thermally stabilizing amount of a mixture comprising at least one polyalkylene glycol and at least one metal salt of a strong acid selected from the group consisting of perchloric acid, trifluoroacetic acid, trifluoromethanesulfonic acid, alkylsulfuric acid, phosphotungstic acid, HPF6, HBF4, and HSbF6

Abstract: A process is disclosed for reducing the concentration of a dialkyl ether in a mixture comprising the dialkyl ether and a dialkyl peroxide wherein the process comprises treating said mixture with a strong acid.

Abstract: An organic peroxide stabilizing composition comprises an organic peroxide and an organic peroxide stabilizing compound selected from one of the following general formulas (I) or (II):

Abstract: A polymer composition is disclosed that comprises a propylene polymer having a melt flow index in the range from 4 to 120 decigrams/minute, di-t-amyl peroxide, and at least one decomposition product of said peroxide, whereby said composition has agreeable odor characteristics.

Abstract: Disclosed herein is a composition comprising:

Abstract: A free radical polymerization process is provided which comprises polymerizing at least one radically polymerizable monomer in the presence of the multi-component liquid azo-peroxide initiator mixture under polymerization conditions to provide a radically polymerized homopolymer or copolymer, the multi-component liquid azo-peroxide initiator mixture comprising (a) at least 6 different azodinitriles; and (b) one or more liquid organic peroxides. Also provided is the stable multi-component liquid azo-peroxide initiator mixture.

Abstract: Disclosed herein is a composition comprising:

Abstract: Phosphomolybdic acid and partial alkali salts of phosphomolybdic acid are used as stabilizers for aqueous hydrogen peroxide.

Abstract: The present invention relates to methods and compositions for tissue-restricted gene recombination. In particular, the present invention provides methods and compositions for tissue-restricted gene recombination in post-mitotic cells. The present invention further provides methods for gene recombination in post-mitotic cells comprising the delivery of a Cre recombinase to the target tissue to facilitate recombination in a desired target nucleic acid.

Abstract: A process for production of a t-alkyl peroxide compound includes the steps of: a) reacting an n-alkyl t-alkyl ether with a reactant mixture comprising an acid catalyst and a compound of the formula RO2H  (I)  where R is H or t-alkyl, provided that if R is t-alkyl the t-alkyl peroxide compound product is a di-t-alkyl peroxide, and b) isolating a reaction product comprising said t-alkyl peroxide compound from the mixture resulting from step a). The process can be used to prepare t-butyl hydroperoxide or di-t-butyl peroxide from methyl t-butyl ether. Sulfuric acid may be used as the acid catalyst.

Abstract: The process of preparing peroxyketals which comprises reacting a composition comprising ketone with hydroperoxide in the presence of heteropolyacid.

Abstract: A method of (co)polymerizing vinyl and/or diene monomers comprising contacting the monomers with a (co)polymeriztion composition under conditions effective to (co)polymerize the monomers, wherein the (co)polymerization composition comprises: (a) an organic peroxide component, and (b) a heteropoly acid, in an amount effective to lower the onset temperature of decomposition of the organic peroxide component with the proviso that if the heteropoly acid is phosphomolybdic acid the organic peroxide is not a peroxydicarbonate.

Abstract: The process of preparing geminal dihydroperoxy alkyl peroxides and 1,1-dihydroperoxydialkyl peroxides, which comprises reacting an aqueous composition comprising a ketone with hydrogen peroxide in the presence of a heteropolyacid.

Abstract: The invention disclosed involves the use of heteropoly acids as promoters to decompose organic peroxides.