Trisubstituted triazines having the formula: ##STR00001## wherein: X is O and n is 0 or 1, Y is OH, NH.sub.2 or CH.sub.2NH.sub.2, Q is P, P═O, CH or N, when Q is P, R is phenyl, when Q is P═O, Z is R or OR, and R is alkyl or phenyl, when Q is CH, Z is PO(R).sub.2 or PO(OR).sub.2, when Q is N, Z is R, and their uses as epoxy and cyclic carbonate polymer curing agents.

In an embodiment, a method for producing an aryl alkyl carbonate can comprise: reacting methanol with a diaryl carbonate in the presence of a catalyst to form a mixture comprising an aryl alkyl carbonate and a hydroxy compound, wherein the methanol is in an acetone monomer mixture comprising acetone and at least one of diaryl carbonate and dihydroxy compound; separating the aryl alkyl carbonate from the mixture.

A polycarbonate resin composition containing 0.1 to 10 parts by mass of a polycarbonate copolymer (B) having carbonate bonding between (B1) bisphenol A and a (B2) polyalkylene glycol and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A).

A polycarbonate resin composition containing 0.1 to 10 parts by mass of a polycarbonate copolymer (B) having carbonate bonding between (B1) bisphenol A and a (B2) polyalkylene glycol and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A).

The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which specific siloxane compounds are introduced in the main chain of polycarbonate and thus exhibits the effects of improving impact strength at room temperature, impact strength at low-temperature, and melt index.

A process for preparing polyether carbonate alcohols by attaching cyclic propylene carbonate to an H-functional starter substance in the presence of a catalyst, characterized in that at least one compound according to formula M.sub.nX (I) is used as a catalyst, wherein M is selected from the alkali metal cations Li.sup.+, Na.sup.+, K.sup.+ and Cs.sup.+, X is selected from the anions VO.sub.3.sup.−, WO.sub.4.sup.2−, MoO.sub.4.sup.2− and VO.sub.4.sup.3−, n is 1, if X═VO.sub.3.sup.−, n is 2, if X═WO.sub.4.sup.2− or MoO.sub.4.sup.2−, and n is 3, if X═VO.sub.4.sup.3−.

A process for preparing polyether carbonate alcohols by attaching cyclic propylene carbonate to an H-functional starter substance in the presence of a catalyst, characterized in that at least one compound according to formula M.sub.nX (I) is used as a catalyst, wherein M is selected from the alkali metal cations Li.sup.+, Na.sup.+, K.sup.+ and Cs.sup.+, X is selected from the anions VO.sub.3.sup.−, WO.sub.4.sup.2−, MoO.sub.4.sup.2− and VO.sub.4.sup.3−, n is 1, if X═VO.sub.3.sup.−, n is 2, if X═WO.sub.4.sup.2− or MoO.sub.4.sup.2−, and n is 3, if X═VO.sub.4.sup.3−.

In one embodiment, a light emitting device includes a lighting element located in a housing, wherein the housing is formed from a plastic composition including, for example, a polycarbonate formed from reacting, in the presence of a transesterification catalyst, a diaryl carbonate ester and a bisphenol A, wherein the bisphenol A has a sulfur concentration of 1 ppm to 15 ppm, based upon a weight of the bisphenol A; and a conversion material wherein the conversion material includes an inorganic material that converts radiation of a certain wavelength and re-emits of a different wavelength; wherein after the conversion material has been exposed to an excitation source, the conversion material has a luminescence lifetime of less than 10.sup.−4 seconds when the excitation source is removed.

The invention relates to a method for producing polyether carbonate polyols, (i) one or more alkylene oxide(s) and carbon dioxide being added to one or more H-functional starter substance(s) in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, a reaction mixture containing the polyether carbonate polyol being obtained, characterized in that (ii) at least one component K is added to the obtained reaction mixture containing the polyether carbonate polyol, wherein component K is selected from at least one compound that contains a phosphorus-oxygen bond or a compound of phosphorus that can form one or more P—O bonds by reaction with OH-functional compounds.

The present invention relates to a cascade process for the preparation of a block copolymer comprising a first type of polyolefin block and at least one type of second polymer block. The process according to the present invention involves the following consecutive steps: A) polymerizing at least one type of olefin monomer using a catalyst system to obtain a first polyolefin block containing a main group metal on at least one chain end; the catalyst system comprising: i) a metal catalyst or metal catalyst precursor comprising a metal from Group 3-10 of the IUPAC Periodic Table of elements; and ii) at least one type of chain transfer agent; and iii) optionally a co-catalyst; B) reacting the first polyolefin block containing a main group metal on at least one chain end obtained in step A) with at least one type of oxidizing agent to obtain a first polyolefin block containing at least one main group metal-functionalized oxidized chain end; and C) forming at least one second polymer block on the first polyolefin block, wherein as a catalytic initiator the main group metal-functionalized oxidized chain end of the first polyolefin block obtained in step B) is used.