The Dow Chemical Company

Trinseo Europe Gmbh

Styron Europe Gmbh

Luc Bosiers

Pak-Wing Steve Chum

Jacquelyn A deGroot

Lawrence T Kale

Claude T E Van Nuffel

Abidin Balan

Rodolfo Salmang-Frohard

A foaming composition useful to make an extruded foam is comprised of comprising a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and one or more blowing agents. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and ionically crosslink said copolymer which is then extruded through a die forming a foam. The foam is comprised of an ionically crosslinked aforementioned copolymer, wherein the copolymer is crosslinked through ionic bonds between the unsaturated acids and the metal of the metal salt or metal oxide.

Foams and method of forming foams of ionomers of copolymers of vinylidene aromatic monomer and unsaturated compounds with acid groups

Apparatus () for admixing additives to a medium to be pumped, comprising at least one gear pump () for pumping a medium to be pumped, said gear pump () comprising at least one shaft () having a first driving torque; at least one injector () for introducing an additive into a medium to be pumped; at least one screw conveyor () for mixing said additive with said medium to be pumped, said screw conveyor having a second driving torque, and, characterized in that, the shaft () and the screw conveyor () are functionally connected, such that the first driving torque and the second driving torque are coupled.

Dynamic mixing pump

The subject invention generally provides a multilayer structure that includes a polymer mixture made from at least two polymer component materials. The invention particularly pertains to a multilayer structure containing an improved sealant layer and a polypropylene layer, wherein the sealant layer is made from a homogeneously branched ethylene polymer having particular molecular weight characteristics and a second ethylene polymer. The sealant layer has balanced properties such low heat seal and hot tack initiation temperature, a high hot tack strength and a broad hot tack seal window. The multilayer structure is particularly useful as a biaxially oriented polypropylene (BOPP) packaging film structure.

Multilayer polyolefin with balanced sealant properties

Growing community of inventors

Edegem, Belgium

Luc Bosiers