A polymerization reactor for production of a super absorbent polymer according to the present disclosure includes: a composition supply part for supplying a monomer composition solution; a central pipe connected to the composition supply part; a composition distribution part including a water storage tank located at a discharge port of the central pipe; a distribution pipe connected to the water storage tank; and an ultrasonic device installed inside the water storage tank, a conveyor belt located under the composition distribution part and on which the composition solution is dropped, and an energy supply part for supplying polymerization energy to the composition solution on the conveyor belt, wherein the ultrasonic device supplies bubbles to the composition solution flowing into the water storage tank.

A polymerization reactor for production of a super absorbent polymer according to the present disclosure includes: a composition supply part for supplying a monomer composition solution; a central pipe connected to the composition supply part; a composition distribution part including a water storage tank located at a discharge port of the central pipe; a distribution pipe connected to the water storage tank; and an ultrasonic device installed inside the water storage tank, a conveyor belt located under the composition distribution part and on which the composition solution is dropped, and an energy supply part for supplying polymerization energy to the composition solution on the conveyor belt, wherein the ultrasonic device supplies bubbles to the composition solution flowing into the water storage tank.

A method for producing a polyolefin with a wide molecular weight distribution can comprise: polymerizing one or more monomers in the presence of a catalyst system in a loop reactor to produce a polyolefin product having a polydispersity index of 2.5 to 8, wherein the loop reactor comprises two or more reactors in series, and wherein the loop reactor has a loop thermal gradient of 50° C. to 150° C. and/or a standard deviation of inter-component thermal gradients along the loop reactor of 10° C. to 50° C.

A method for producing a polyolefin with a wide molecular weight distribution can comprise: polymerizing one or more monomers in the presence of a catalyst system in a loop reactor to produce a polyolefin product having a polydispersity index of 2.5 to 8, wherein the loop reactor comprises two or more reactors in series, and wherein the loop reactor has a loop thermal gradient of 50° C. to 150° C. and/or a standard deviation of inter-component thermal gradients along the loop reactor of 10° C. to 50° C.

A method for producing a polyolefin with a wide molecular weight distribution can comprise: polymerizing one or more monomers in the presence of a catalyst system in a loop reactor to produce a polyolefin product having a polydispersity index of 2.5 to 8, wherein the loop reactor comprises two or more reactors in series, and wherein the loop reactor has a loop thermal gradient of 50° C. to 150° C. and/or a standard deviation of inter-component thermal gradients along the loop reactor of 10° C. to 50° C.

The present invention relates to a polybutene-free lubricating composition, a method for lubricating a compressor using said lubricating composition and a method for pressurizing olefin in a compressor lubricated with said lubricating composition, the use of said lubricating composition for lubricating a compressor, a method of pressurizing olefin in a compressor lubricated with said lubricating composition and a method of preparing a high pressure polyolefin using a high pressure compressor lubricated with said lubricating composition.

The present invention relates to a polybutene-free lubricating composition, a method for lubricating a compressor using said lubricating composition and a method for pressurizing olefin in a compressor lubricated with said lubricating composition, the use of said lubricating composition for lubricating a compressor, a method of pressurizing olefin in a compressor lubricated with said lubricating composition and a method of preparing a high pressure polyolefin using a high pressure compressor lubricated with said lubricating composition.

A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.

A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.

A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.