98 results about "Functionalized polyethylene" patented technology

Crosslinkable, semiconductive, peroxide-free thermoplastic compositions having a stable volume resistivity of less than 1000 ohm-cm comprise, based on the weight of the composition:A. 60-90 wt % silane-functionalized polyethylene;B. 0.5-20 wt % organopolysiloxane containing two or more functional end groups;C. 10-20 wt % high conductivity carbon black, e.g., a carbon black having an average particle size of 50 nm or less, a surface area (BET) of 700-1250 m2 / g, and an oil absorption (DBP) of 300-500 ml / 100 g; andD. 0.05-0.2 wt % crosslinking catalyst.

The present invention is directed to the incorporation of functionalized polyethylenes, in amount of about 1% to 95% by weight based upon the weight of the total crosslinkable material, into ethylene alpha olefin elastomers, such as EPDM elastomer compositions, which are crosslinked by peroxides, which results in improved properties, such as hardness and modulus of elongation, and can result in improved higher abrasion resistance, wear resistance, coefficient of friction, tensile strength, and other properties through a broad temperature range, which are beneficial to power transmission products, such as power transmission belts.

#CMT# # / CMT# Sealing agent (1) comprises a barrier layer (2) and an adhesive layer (3) comprising: a polymer, which is polyethylene, polypropylene or a copolymer of ethylene and propylene; a polyolefin-based polymer having at least one functional group of carboxylic acids, hydroxy-groups, anhydrides, acetates and glycidyl methacrylates; and azo-dicarbonamide. #CMT# : # / CMT# Independent claims are also included for: (1) sealing a substrate, comprising applying a sealing agent on a substrate, where the adhesive layer faces the substrate, and heating the adhesive layer to a temperature of 80-600[deg] C; and (2) molding of a sealing agent, comprising connecting the molding with adhesive layer, which is previously heated and fixed with the sealing agent. #CMT#USE : # / CMT# The sealing agent is useful for sealing the substrates (claimed). #CMT#ADVANTAGE : # / CMT# The sealing agent: allows rapid sealing of structures; and ensures good adhesion of the sealing agent on the base. #CMT#DESCRIPTION OF DRAWINGS : # / CMT# The figure shows a schematic representation of the sealing agent. 1 : Sealing agent 2 : Barrier layer 3 : Adhesive layer #CMT#POLYMERS : # / CMT# Preferred Components: The polyolefin-based polymer comprises: maleic anhydride functionalized polyethylene, preferably maleic anhydride functionalized low density polyethylene or maleic anhydride functionalized high density polyethylene; maleic anhydride functionalized polypropylene; maleic anhydride functionalized copolymer of ethylene and propylene; maleic anhydride functionalized ethylene-vinyl acetate copolymer; ethylene-vinyl acetate copolymers; glycidyl-methacrylate-functionalized polyethylene; and ethylene-acrylic acid copolymers. The amount of the polyolefin-based polymer is 1-18 wt.%, preferably 8-12 wt.%. The ratio of azodicarbonamide and polyolefin-based polymer is 0.1-1.2, preferably 0.4-0.6. The amount of azodicarbonamide is 3-7 wt.%, preferably 4-6 wt.%, or 0.5-5 wt.%, preferably 1-3 wt.%. The adhesive layer comprises less than 1 wt.%, preferably 0 wt.% epoxy resin, based on the total weight of the adhesive layer. The barrier layer has a foamed part on the side facing towards the adhesive layer. The adhesive layer is tack-free at 23[deg] C. The substrate is made of asphalt. Preferred Method: The method comprises applying a substrate on the barrier layer of the sealing agent. #CMT#EXAMPLE : # / CMT# No suitable example given.

A synthetic composition is provided which includes an acid-functional polymer having at least one pendant acid group, an amine-functional polymer having at least one pendant amine group, and a coupling agent. The synthetic composition can be used in human and animal medical applications as an adhesive or sealant.