Abstract:
A method of manufacturing a resin molded article includes a step of preparing a resin powder having low dust generation property by adding a liquid paraffin to a thermosetting resin, and a step of obtaining a resin molded article by heating and kneading the resin powder having low dust generation property, in which the step of preparing the resin powder having low dust generation property includes a step in which the thermosetting resin is melted and the liquid paraffin is added to the melted thermosetting resin to be stirred and mixed.
Abstract:
A method for producing a polylactic acid resin composition, including the following steps (1) and (2): step (1): subjecting an organic crystal nucleating agent to a wet pulverization in the presence of a carboxylic acid ester having a weight-average molecular weight of from 150 to 600 and a viscosity at 23° C. of from 1 to 500 mP·s and/or a phosphoric ester having a weight-average molecular weight of from 150 to 600 and a viscosity at 23° C. of from 1 to 500 mPa·s to give a finely pulverized organic crystal nucleating agent composition; and step (2): melt-kneading a raw material for a polylactic acid resin composition comprising the finely pulverized organic crystal nucleating agent composition obtained in the step (1) and a polylactic acid resin. The polylactic acid resin composition obtainable by the method of the present invention can be suitably used in various industrial applications, such as daily sundries, household electric appliance parts, packaging materials for household electric appliance parts, and automobile parts.
Abstract:
The present invention relates to PBS- and silica-based composites, said composites having a high swelling ability. It also relates to a method of preparing said composites, a method of swelling said composites and films obtained by swelling said composites.
Abstract:
A method for producing a polylactic acid resin composition, including the following steps (1) and (2): step (1): subjecting an organic crystal nucleating agent to a wet pulverization in the presence of a carboxylic acid ester having a weight-average molecular weight of from 150 to 600 and a viscosity at 23° C. of from 1 to 500 mPa·s and/or a phosphoric ester having a weight-average molecular weight of from 150 to 600 and a viscosity at 23° C. of from 1 to 500 mPa·s to give a finely pulverized organic crystal nucleating agent composition; and step (2): melt-kneading a raw material for a polylactic acid resin composition comprising the finely pulverized organic crystal nucleating agent composition obtained in the step (1) and a polylactic acid resin.
Abstract:
Process for manufacturing a self-sealing elastomer composition, wherein the process comprises the following steps: firstly a masterbatch comprising at least one diene elastomer and a thermoplastic plasticizing hydrocarbon resin with a content greater than 30 phr is manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding temperature” which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything, in the same mixer or in a different mixer, at a temperature or up to a maximum temperature which is kept below 100° C., in order to obtain said self-sealing composition, and wherein at least one liquid plasticizer having a glass transition temperature (Tg) below −20° C. is furthermore incorporated in an amount of less than 60 phr into said masterbatch or into said composition.
Abstract:
Mass productivity and production stability of a polyphenylene ether composition are improved without deteriorating physical properties by means of a production process of polyphenylene ether composition comprising pre-melt compounding 20 to 98.5% by mass of a polyphenylene ether powder (I), 1 to 60% by mass of an inorganic filler powder (II) and 0.5 to 20% by mass of a thermoplastic elastomer having functional group (III), followed by melt compounding; wherein melt compounding is conducted using a twin-screw extruder having a total length of barrels of 800 mm or more, and a pre-melt compounding zone occupies 45 to 80 % of upstream of the twin-screw extruder based on the total length 100% of the twin-screw extruder when a drive side and a molten compound discharging side of the twin-screw extruder are regarded as upstream and downstream, respectively.
Abstract:
A method of making a sheet structure comprising a first polycarbonate layer which comprises a UV-absorbing compound and a second polycarbonate layer comprises: (i) selecting a liquid formulation comprising a vehicle, for example a trimellitate or low molecular weight acrylic and an UV absorbing additive; and (ii) mixing the liquid formulation with polycarbonate when said first polymeric material is in a molten state, for example in an extruder.
Abstract:
A biaxially oriented polyester film comprising polyester and at least one hydrolysis stabiliser selected from a glycidyl ester of a branched monocarboxylic acid, wherein the monocarboxylic acid has from 5 to 50 carbon atoms, wherein said hydrolysis stabiliser is present in the film in the form of its reaction product with at least some of the end-groups of said polyester, and wherein said reaction product is obtained by the reaction of the hydrolysis stabiliser with the end-groups of the polyester in the presence of a metal cation selected from the group consisting of Group I and Group II metal cations.
Abstract:
A resin molded body includes a polymeric material, such as one of a thermoplastic resin, a thermosetting resin, elastomer, and rubber, to which a required amount of ferromagnetic glittering agent having shape anisotropy is added. At a time when the polymeric material is in a molten resin state inside of a mold cavity, the polymeric material is subjected to the three-axis orientation control and orientation distribution control performed by applying a rotating magnetic field to the molten resin at a required position, adjusting an orientation of the ferromagnetic glittering agent mixed in the molten resin, and shifting the ferromagnetic glittering agent mixed in the molten resin in a required direction, and the ferromagnetic glittering agent mixed in the molten resin is then shifted to a design surface side to be thereby concentratedly distributed for orientation.
Abstract:
A preform is formed by compounding a resin made from poly-L-lactic acid with a functional filler and subjecting a mouth portion to a heat treatment. Also, a hollow shaped product is produced by blow-molding the preform.