The present invention relates to a moulding compound containing: A) at least one polymer selected from the group consisting of polycarbonate and polyester carbonate; B) a polymer containing B1) at least one rubber-modified vinyl(co)polymer containing B1.1) 80 to 95 wt. %, based on B1, of at least one vinyl monomer and B1.2) 5 to 20 wt. %, based on B1, of one or more rubber-elastic polybutadiene-containing graft foundations, wherein B1 contains polybutadiene-containing rubber particles, which are grafted with the vinyl monomers B1.1 and contain inclusions of vinyl(co)polymer consisting of the vinyl monomers B1.1, and a vinyl(co)polymer matrix which consists of the vinyl monomers B1.1 and is not bonded to these rubber particles and not enclosed in rubber particles, and optionally B2) further rubber particles, grafted with vinyl monomers, from B2.1) 5 to 75 wt. %, based on B.2, of at least one vinyl monomer grafted onto B2.2) 25 to 95 wt. %, based on B2, of one or more rubber-elastic graft foundations, wherein the weight ratio of the components B1 to B2 is at least 5:1; C) a master batch, which is solid at room temperature, containing C1) one or more copolymers containing structural units derived from an olefin and structural units derived from a polar comonomer; C2) a vulcanised silicone elastomer. The invention also relates to a method for preparing the moulding compound, to the use of the moulding compound for producing moulded bodies, and to the moulded bodies themselves.

The present invention relates to a moulding compound containing: A) at least one polymer selected from the group consisting of polycarbonate and polyester carbonate; B) a polymer containing B1) at least one rubber-modified vinyl(co)polymer containing B1.1) 80 to 95 wt. %, based on B1, of at least one vinyl monomer and B1.2) 5 to 20 wt. %, based on B1, of one or more rubber-elastic polybutadiene-containing graft foundations, wherein B1 contains polybutadiene-containing rubber particles, which are grafted with the vinyl monomers B1.1 and contain inclusions of vinyl(co)polymer consisting of the vinyl monomers B1.1, and a vinyl(co)polymer matrix which consists of the vinyl monomers B1.1 and is not bonded to these rubber particles and not enclosed in rubber particles, and optionally B2) further rubber particles, grafted with vinyl monomers, from B2.1) 5 to 75 wt. %, based on B.2, of at least one vinyl monomer grafted onto B2.2) 25 to 95 wt. %, based on B2, of one or more rubber-elastic graft foundations, wherein the weight ratio of the components B1 to B2 is at least 5:1; C) a master batch, which is solid at room temperature, containing C1) one or more copolymers containing structural units derived from an olefin and structural units derived from a polar comonomer; C2) a vulcanised silicone elastomer. The invention also relates to a method for preparing the moulding compound, to the use of the moulding compound for producing moulded bodies, and to the moulded bodies themselves.

Embodiments of a method for reducing unreacted ethylene monomer in a low density polyethylene (LDPE) polymerization process comprises: delivering a monomer feedstock comprising ethylene monomer to a compressor system to produce a pressurized feedstock having a pressure of at least 2000 bar; passing the pressurized feedstock to at least one free radical polymerization reactor to produce a reactor effluent comprising the LDPE and unreacted ethylene monomer; and delivering the reactor effluent to a separation system comprising a first separation vessel, a second separation vessel, and a third separation vessel in series, the third separation vessel having an operating pressure of less than or equal to 0.05 bar, wherein the third separation vessel produces a separation product comprising LDPE and less than or equal to 50 ppm of the unreacted ethylene monomer, wherein there is no stripping agent added upstream of the third separation vessel.

Embodiments of a method for reducing unreacted ethylene monomer in a low density polyethylene (LDPE) polymerization process comprises: delivering a monomer feedstock comprising ethylene monomer to a compressor system to produce a pressurized feedstock having a pressure of at least 2000 bar; passing the pressurized feedstock to at least one free radical polymerization reactor to produce a reactor effluent comprising the LDPE and unreacted ethylene monomer; and delivering the reactor effluent to a separation system comprising a first separation vessel, a second separation vessel, and a third separation vessel in series, the third separation vessel having an operating pressure of less than or equal to 0.05 bar, wherein the third separation vessel produces a separation product comprising LDPE and less than or equal to 50 ppm of the unreacted ethylene monomer, wherein there is no stripping agent added upstream of the third separation vessel.

It is provided a process for producing an ethylene copolymer comprising compressing ethylene monomer at a certain pressure; adding a fresh comonomer in liquid form and, optionally, a fresh modifier in liquid form at a certain pressure to the compressed ethylene monomer; introducing the resulting compressed mixture into an autoclave reactor having a first reaction zone and at least one more reaction zone, the first reaction zone having a volume that is greater than 50% of the total reactor volume, and, optionally, at least one additional reactor; adding at least one free radical initiator in order to start a polymerization reaction; and separating the ethylene copolymer from the reaction mixture; wherein all the compressed ethylene monomer or the compressed mixture are introduced into the first reaction zone of the autoclave reactor, and wherein the compressed mixture is introduced into the autoclave reactor and, optionally, into the at least one additional reactor at a temperature from −20° C. to 70° C.

It is provided a process for producing an ethylene copolymer comprising compressing ethylene monomer at a certain pressure; adding a fresh comonomer in liquid form and, optionally, a fresh modifier in liquid form at a certain pressure to the compressed ethylene monomer; introducing the resulting compressed mixture into an autoclave reactor having a first reaction zone and at least one more reaction zone, the first reaction zone having a volume that is greater than 50% of the total reactor volume, and, optionally, at least one additional reactor; adding at least one free radical initiator in order to start a polymerization reaction; and separating the ethylene copolymer from the reaction mixture; wherein all the compressed ethylene monomer or the compressed mixture are introduced into the first reaction zone of the autoclave reactor, and wherein the compressed mixture is introduced into the autoclave reactor and, optionally, into the at least one additional reactor at a temperature from −20° C. to 70° C.

Provided is a method of producing a vinyl chloride-based polymer composite, which includes: forming particle nuclei by bulk polymerizing vinyl chloride-based monomers; producing a vinyl chloride-based polymer by bulk polymerizing vinyl chloride-based monomers in the presence of the particle nuclei; and producing a vinyl chloride-based polymer composite including the vinyl chloride-based polymer and a cellulose-based compound.

Provided is a method of producing a vinyl chloride-based polymer composite, which includes: forming particle nuclei by bulk polymerizing vinyl chloride-based monomers; producing a vinyl chloride-based polymer by bulk polymerizing vinyl chloride-based monomers in the presence of the particle nuclei; and producing a vinyl chloride-based polymer composite including the vinyl chloride-based polymer and a cellulose-based compound.

A process for the continuous solution polymerization including the step of polymerizing a first olefin monomer of formula CH.sub.2═CHR.sup.1, wherein R.sup.1 is hydrogen or a hydrocarbon radical having from 1 to 8 carbon atoms with a second olefin monomer of formula CH.sub.2═CHR.sup.2, wherein R.sup.2 is a hydrocarbon radical having from 3 to 8 carbon atoms, in the presence of a polymerization catalyst and in the absence of an inert solvent, at a polymerization temperature (Tp) satisfying the following relationship:

Tp≥Tm+20° C.

wherein Tm is the melting temperature of the obtained polymer.

A process for the continuous solution polymerization including the step of polymerizing a first olefin monomer of formula CH.sub.2═CHR.sup.1, wherein R.sup.1 is hydrogen or a hydrocarbon radical having from 1 to 8 carbon atoms with a second olefin monomer of formula CH.sub.2═CHR.sup.2, wherein R.sup.2 is a hydrocarbon radical having from 3 to 8 carbon atoms, in the presence of a polymerization catalyst and in the absence of an inert solvent, at a polymerization temperature (Tp) satisfying the following relationship:

Tp≥Tm+20° C.

wherein Tm is the melting temperature of the obtained polymer.