Abstract: The invention is related to a process for producing modified polyethylene having decreased melt flow rate (5 kg, 190° C.) (MFR). In particular, the present invention is directed to a process in a controlled manner for producing modified polyethylene recyclates having low MFR and low gel content directly by reactive extrusion processing.

Abstract: The invention involves functionalizing polymeric beads, such as DVB beads, to add an epoxide or aldehyde group. The resulting beads are useful in various applications.

Abstract: The invention discloses a preparation method of a polyimide film having a low dielectric constant and high fracture toughness; in the method an aromatic diamine solution is firstly prepared, and then a poly(5-norbornene-2,3-dicarboxylic anhydride-alt-maleimide isobutyl polyhedral oligomeric silsesquioxane) and aromatic dianhydride are ground, uniformly mixed, added to the aromatic diamine solution, and stirred to obtain a poly(5-norbornene-2,3-dicarboxylic anhydride-alt-maleimide isobutyl polyhedral oligomeric silsesquioxane)/polyamic acid solution; the solution is uniformly applied on a clean glass sheet, then placed in a vacuum drying oven, cooled to room temperature, and then a film is peeled off in water by ultrasonic and dried under vacuum to obtain the desired product. The dielectric constant of the film obtained by the invention is reduced to 2.

Abstract: An object of the present disclosure is to provide a terminal-modified conjugated dime polymer capable of improving fracture resistance of a rubber article. Specifically, a terminal-modified conjugated diene polymer is characterized in that a content of catalyst residue therein derived from a catalyst used in polymerization is less than 60 ppm.

Abstract: A surface-treating agent containing (1) at least one perfluoro(poly)ether group containing silane compound of any of the formulae (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2): and (2) a fluorine containing oil of the general formula (O): Rf1-PFPE?-Rf2??(O) wherein: each of the symbols are as defined herein. A content of the fluorine containing oil having a molecular weight of 2.0 or more times higher than the number average molecular weight of the fluorine-containing oils among the fluorine containing oil of the formula (O) is 10 mol % or less.

Abstract: Methods for in situ isomerization if polybutadiene may include adding mixture components of the cross-linkable rubber composition into a mixer, the mixture components comprising at least 10 phr of a polybutadiene rubber having at least 80 wt % cis-bonds and up to 90 phr of a second rubber component having at least some dienic unsaturation and mixing the mixture components during a nonproductive phase. Such methods may include processing the mixture components on a mill during a productive phase, adding at least 3 phr of a disulfide isomerization agent and mixing the disulfide isomerization agent with the mixture components. The mixing may take place in an internal mixer with the isomerization agent added to the mixer or alternatively, it may be added to the mill after the mixture components have been dropped from the mixer for cooling on the mill.

Abstract: The present invention relates generally to a highly-hydrolyzed polyvinyl alcohol composition having increased cold-water solubility, a process for making such a polyvinyl alcohol composition, and various end uses thereof.

Abstract: The invention relates to a method for producing an isocyanate, wherein a carbamate or thiolcarbomate is converted, in the presence of a catalyst, with separation of an alcohol or thioalcohol, at a temperature of at least 150° C., to the corresponding isocyanate, wherein a compound of the general formula (X)(Y)(Z—H) is used as a catalyst, in particular characterized in that the compound has both a proton donor function and a proton acceptor function. In the catalysts according to the invention, a separable proton is bound to a heteroatom, which is more electronegative than carbon. Said heteroatom is either identical to Z or a component thereof. In the catalysts according to the invention, there is additionally a proton acceptor function which is either identical to X or a component thereof. According to the invention, the proton donator and proton acceptor function are connected to each other by the bridge Y.

Abstract: Dihydropyridazines compounds having antioxidant properties and uses thereof are described herein. These compounds can function as antioxidants that prevent oxidation of materials, including polymers, and as free radical inhibitors to stabilize reactive chemicals, such as monomers against free radical reactions. The dihydropyridazines can be added as small molecule additives or they can be incorporated into molecules bearing dienophilic C?C double bonds through a Carboni Lindsey reaction, which can reduce environmental and health exposure to antioxidants in plastics and allow for a greater quantity of the antioxidants to be used.

Abstract: A method of treating a wearable device to resist sebum, the method including providing a body having an elastic material having a polymeric backbone where a portion of the polymeric backbone is unsaturated and the body has an outer surface. The method further includes forming a crosslinked matrix within an outer layer of the body surrounding an inner layer of the body such that the outer layer has less affinity to sebum than the inner layer of the body.

Abstract: The invention relates to a process for the production of an elastomer agglomerate composition, comprising: forcing a slurry through an aperture in a valve assembly (1) to obtain the elastomer agglomerate composition; wherein the valve assembly (1) comprises the valve (2) and a seat (3) that are arranged opposite each other to provide a flow channel for the slurry to be homogenized with an emulsifying channel section (5) that is provided with the aperture; wherein the emulsifying flow channel section is arranged at an angle (a) with respect to an axial center line of the valve in a cross sectional view of the valve assembly; and wherein the slurry comprises elastomeric particles in water.

Abstract: An insulated wire or cable is made by a process comprising the steps of: (A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130° C. (60 Hz, 2 kV) or 120° C. (60 Hz, 8 kV) or 100° C. (60 Hz, 8 kV) of <0.5% and comprising: (1) a high melt strength ethylene-based polymer made in a tubular reactor, and (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.

Abstract: The present invention relates to a polyketone resin composition and a polyketone resin molded article produced by using the composition, and particularly to a polyketone resin and a polyketone resin molding which comprise a predetermined content of polyketone and polyalkylene carbonate and thus have enhanced melt stability of polyketone.

Abstract: A polyalkylene glycol derivative with a minimal impurity content is prepared simply by the steps of reacting a compound having formula (III-I) or (III-II) with an electrophile having formula (IV) in the presence of an optional basic compound, to form a reaction solution containing a compound having formula (V), and passing the reaction solution through a column of cation and anion exchange resins to remove water-soluble impurities, for thereby purifying the desired polyalkylene glycol derivative.

Abstract: The present invention relates to a use or process for the reduction of gels in polyethylene materials comprising at least one ethylene copolymer with a density ?850 kg/m3 and <905 kg/m3 wherein a polyethylene material is subjected to melt processing in the presence of a free radical initiator composition characterized in that the free radical initiator composition may for example be added in quantities ?0.050 wt. % compared to the total weight of the polyethylene material, wherein further the melt processing is performed in a melt processing unit, wherein the free radical initiator composition is dosed to the melt processing unit in a stage where the polyethylene material is in a molten condition and melt processing is conducted at a temperature of ?160° C. and ?240° C.

Abstract: The present disclosure is directed to a thermoplastic polymer for additive manufacturing, wherein the thermoplastic polymer is derived from a chlorinated monomer unit, wherein the thermoplastic polymer has a melt flow rae (MFR) suitable for additive manufacturing. The present disclosure is also directed to a method of making a 3D product formed by additive manufacturing, wherein the 3D product comprises a thermoplastic polymer derived from a chlorinated monomer unit or a thermoplastic composition comprising at least one thermoplastic polymer derived from a chlorinated monomer unit; and at least one stabiliser, wherein the thermoplastic polymer or composition has a MFR suitable for additive manufacturing.

Abstract: The present invention includes a rubber composition containing a modified diene polymer having a group represented by Formula (I) below and a group represented by Formula (II) below, and silica; and a modified diene polymer and a production method thereof. In Formula (I), X1 represents at least one selected from the group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom, X3 represents a hydrocarbon group, n3 represents from 0 to 4, and X2 represents at least one selected from the group consisting of sulfone-based protecting groups, carbamate-based protecting groups, and —(R—O)n4—H. In Formula (II), R1-1 represents a divalent hydrocarbon group, R1-2 and R1-3 each independently represent a monovalent hydrocarbon group, m1 is from 1 to 3, m2 is from 0 to 2, m1+m2 is 3, and R1-4 represents a hydrogen atom or a hydrocarbon group.

Abstract: A copolymer includes a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups. The copolymer further includes gem-bisphosphonate groups. The copolymer can be included in an admixture for suspensions of mineral particles and in a composition of mineral particles. The copolymer can also be used for fluidifying and maintaining fluid, suspensions of mineral particles and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates.

Abstract: The invention provides reactive resins compounds and compositions made from renewable materials, such as plant and animal oils. The reactive resins compounds and compositions may include an accelerator as part of their structure and are made from renewable materials containing a variety of functional groups. The compositions provide excellent adhesion and sealing capability.

Abstract: The present invention relates to a liquid (meth) acrylic composition comprising a (meth) acrylic monomer, a (meth) acrylic polymer and a multistage polymer. In particular the present invention it relates to liquid composition comprising a (meth) acrylic monomer, a (meth) acrylic polymer and a multistage polymer that can be used as a syrup and especially as a syrup for impregnation. More particularly the present invention relates also to a process for preparing a liquid composition comprising a (meth) acrylic monomer, a (meth) acrylic polymer and a multistage polymer.