8 results about "Polyvinyl polymer" patented technology

The present disclosure relates to a metallocene-catalysed multimodal polyethylene polymer (P), and to methods and uses of the multimodal polymer (P) of ethylene in film applications, and to a film including the disclosed polymer (P).

A polymeric material is provided that includes a modified polyvinyl polymer having a polyvinyl chain including one or more units having moieties produced by reaction of a reactant with a polyvinyl alcohol. A method of making a modified polyvinyl polymer includes reacting a polyvinyl alcohol with one or more reactants in the presence of a solvent. Packaging includes a polymeric material including a modified polyvinyl polymer.

According to one or more embodiments described herein, a multilayer film may comprise a first layer which may comprise a first polyethylene polymer, a core which may comprise a first core layer which may comprise a first polyolefin, and a second layer which may comprise a second polyethylene polymer. The core may be positioned between the first layer and the second layer. The thickness of the first core layer may be less than 10% of the total thickness of the multilayer film. The first polyolefin may comprise 4% to 12% by weight of ethylene and 75% to 96% by weight of propylene, based on the total weight of the first polyolefin. The first polyethylene polymer and the second polyethylene polymer may have the same composition or different compositions. The multilayer film may be oriented in the mechanical direction with a stretch ratio of at least 4:1.

Optical fiber article comprising at least one optical fiber and a functional layer arranged on the surface of the optical fiber; wherein the functional layer comprises at least one functional silane having the following structural formula: wherein Z is a branched or unbranched alkyl or aryl group having 1 to 18 carbon atoms, wherein R1, R2 and R3 are independently selected from hydrogen, oxygen, alkyl, alkyloxy, hydroxyalkyl and hydroxyl, and wherein one, two or three of the groups R1, R2 or R3 are directly or indirectly connected to the surface of the optical fiber via a covalent bond, and wherein R4 is selected from -NH2, -NHR', -NR'R'', glycidyloxy and -SH, wherein R' and R'' are independently selected from alkyl, aminoalkyl, hydroxyalkyl and -(CH2)mNH2 with m from 1 to 6, wherein the proportion of the functional silane in the functional layer is at least 1.5 wt.% and at most 70 wt.%.-% and wherein the content of polyvinyl polymers is less than 1 wt% based on the mass of the functional layer, wherein the content of photopolymerized polymers, in particular polyacrylates, polymethacrylates, polyvinyl polymers, polystyrene and / or derivatives thereof, in the functional layer is less than 1 wt% based on the mass of the functional layer.

The application relates to the field of high polymer materials, and discloses a bimodal polyethylene polymer, a preparation method and application thereof, and stone paper. 4 The bimodal polyethylene polymer has a weight average molecular weight of 20-40*10 3 ; a molecular weight distribution of 10-30; a melt flow ratio (21.6 / 5.0) of 25-40; and a melt index under a 5.0kg load at 190 DEG C of 0.01-10g / 10min. The bimodal polyethylene polymer has a bimodal distribution and wide distribution of molecular weight, low fluidity, and good mechanical properties. The bimodal polyethylene polymer is used for the stone paper, has good compatibility with calcium carbonate, the prepared stone paper has a CV value of less than 3%, a density of up to 1.18g / cm 3 , and a stiffness of up to 0.4, and good technical effects are achieved.

Recyclable and dimensionally stable films for packaging include an oriented base film having a first layer containing a polar polymer and a second layer containing a stabilizing polyolefin, wherein the stabilizing polyolefin is selected from the group of an ethylene / norbornene copolymer having a norbornene content greater than 20 mol %, a polyethylene polymer having a density greater than 0.94 g / cm3, and a polypropylene homopolymer.

A thermoplastic polymer composition comprising a polyethylene polymer composition and a bicyclic [2.2.1]heptane-2,3-dicarboxylate. The polyethylene polymer composition may have a melt relaxation product of 50,000 or less. A method for preparing an injection-molded article includes the steps of: (a) providing the thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) injecting the molten thermoplastic polymer composition into a mold cavity, (d) cooling the molten thermoplastic polymer composition, and (e) removing the injection-molded article from the mold cavity. A method for preparing a film includes the steps of: (a) providing the thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) extruding the molten thermoplastic polymer composition through a slit die to form a film, (d) cooling the film, and (e) collecting the film.

A polymer composition comprises a polyolefin polymer and a salt of cyclopentylphosphonic acid. The polyolefin polymer can be a polypropylene polymer or a polyethylene polymer. The polymer composition exhibits fast crystallization rates, making it suitable for use in the production of thin articles with low haze levels. Polymer compositions containing a polyethylene polymer can exhibit preferential transverse direction crystalline lamellae growth, which is a desirable orientation in films and circular, center-gated injection molded parts.