A process for producing an ethylene copolymer, the process including: (a) contacting ethylene with at least one polar comonomer in the presence of at least one modifier and at least one free radical initiator in a tubular reactor under polymerization conditions including a pressure of from 225 to 270 MPa; (b) injecting the at least one free radical initiator into the reactor at a plurality of reaction zones spaced along the length of the reactor, wherein each reaction zone comprises an inlet and an outlet; (c) maintaining the temperature at the inlet of each reaction zone at 150° C. or less, and the temperature at the outlet of each reaction zone is at least 177° C.; (d) controlling the modifier flow at a rate of from 0.02 to 0.986 wt % of the copolymer; and (e) recovering the ethylene copolymer from the tubular reactor, is provided.

A process for producing an ethylene copolymer, the process including: (a) contacting ethylene with at least one polar comonomer in the presence of at least one modifier and at least one free radical initiator in a tubular reactor under polymerization conditions including a pressure of from 225 to 270 MPa; (b) injecting the at least one free radical initiator into the reactor at a plurality of reaction zones spaced along the length of the reactor, wherein each reaction zone comprises an inlet and an outlet; (c) maintaining the temperature at the inlet of each reaction zone at 150° C. or less, and the temperature at the outlet of each reaction zone is at least 177° C.; (d) controlling the modifier flow at a rate of from 0.02 to 0.986 wt % of the copolymer; and (e) recovering the ethylene copolymer from the tubular reactor, is provided.

The present invention relates to a rubber composition having excellent tensile properties and viscoelasticity properties and including a modified conjugated diene-based polymer. The rubber composition may include a modified conjugated diene-based polymer which is selected considering target tensile properties and viscoelasticity properties, by predicting in advance the correlation of the modification ratio of the modified conjugated diene-based polymer and the dynamic viscoelasticity loss coefficient at 60° C. of the rubber composition through Mathematical Formula 1 and Mathematical Formula 2. Therefore, excellent compounding properties may be shown.

The present invention provides an adhesive composition including an ethylene/alpha-olefin copolymer; and a tackifier, wherein the ethylene/alpha-olefin copolymer has narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, uniform crystallinity, thereby showing excellent physical properties.

The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10 min.

The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10 min.

The present invention relates to a composition comprising an aqueous dispersion of multiphase polymer particles comprising first polymer particles having a T.sub.g of less than 30° C. and second polymer particles having a T.sub.g in the range of from 100° C. to 110° C., wherein the second polymer particles are phase separated from and occluded within the first polymer particles; wherein the number average molecular weight (M.sub.n) of the multiphase polymer particles is in the range of from 9,000 to 25,000 g/mole; and wherein the second polymer particles comprise at least 95 weight percent methyl methacrylate. The composition of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating with little or no surface defects.

The present invention relates to a composition comprising an aqueous dispersion of multiphase polymer particles comprising first polymer particles having a T.sub.g of less than 30° C. and second polymer particles having a T.sub.g in the range of from 100° C. to 110° C., wherein the second polymer particles are phase separated from and occluded within the first polymer particles; wherein the number average molecular weight (M.sub.n) of the multiphase polymer particles is in the range of from 9,000 to 25,000 g/mole; and wherein the second polymer particles comprise at least 95 weight percent methyl methacrylate. The composition of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating with little or no surface defects.

The presently claimed invention relates to a polymer emulsion and a process for preparing a polymer emulsion. Particularly, the presently claimed invention relates to a process for preparing a polymer emulsion with high solids content.

The present disclosure provides a process. In an embodiment, the process includes contacting ethylene and octene under polymerization conditions at a temperature greater than 125° C. with a catalyst system comprising (i) a first polymerization catalyst having the structure of Formula (III), a second polymerization catalyst having the structure of Formula (I), and (iii) a chain shuttling agent. The process includes forming an ethylene/octene multi-block copolymer having a normalized OOO triad content greater than 0.25. The present disclosure provides the resultant composition produced by the process. In an embodiment, the composition includes an ethylene/octene multi-block copolymer having a normalized OOO triad content greater than 0.25.