摘要:
This invention enables the outer surface as a whole of a molded resin product to be covered with a coating material with uniform and satisfactory tension. A split mold is provided, which is capable of forming a hollow space between the tapering portions at the circumferential and slidable parts of upper and lower mold members thereof. A molding material is compression molded by using this mold, and the mold members are separated before the molded product has been completely cured, so as to form a space between at least one surface of the molded product and the opposed surface of a mold member. A gas flow directed toward the outer circumference of the mold is formed in the mold so as to send out the extraneous matter to the outside thereof via the mentioned space, and a fluidized coating material is injected into this space between the molded product and the opposed mold surface. The mold is clamped again, and the resultant product is cured under pressure.
摘要:
An object of the present invention is to provide a waste solution solidifying agent which can solidify a waste solution, particularly, a waste solution containing blood or body fluid at a low cost, uniformly, and in a short time; in particular, to provide a waste solution solidifying agent which can solidify a waste solution uniformly and in a short time in a vertically oriented waste solution equipment. As a means of achieving this object, a waste solution solidifying agent of the present invention is a particulate treating agent used in a method of treating a waste solution which solidifies a waste solution into a gel by placing a treating agent in a waste solution, and is characterized in that said agent contains, as an essential component, a water-absorbent resin having a crosslinked structure obtained by polymerizing a water-soluble ethylenic unsaturated monomer and, when flowing-placed at once into a 0.90 mass % aqueous sodium chloride solution, 20 to 95 mass % of the agent is floated, and 80 to 5 mass % is settled. And a process for preparing a waste solution solidifying agent of the present invention is a process for preparing a particulate waste solution solidifying agent containing, as an essential component, a water-absorbent resin having a crosslinked structure obtained by polymerizing a water-soluble ethylenic unsaturated monomer, and comprises a step of mixing a hydrophobic substance having a methanol index of 20 or more after polymerization.
摘要:
The present invention provides (meth)acryl syrup which shows excellent storage stability as a molding material, and also provides a method of manufacturing the (meth)acryl syrup in a shorter period of time compared with the conventional method, and a molding material which permits a molded article having excellent heat-resistance, solvent-resistance, weathering resistance, and water-resistance, etc., to be manufactured. The (meth)acryl syrup is manufactured, for example, by polymerizing a monomer component including (meth)acrylic ester and a vinyl monomer having a carboxyl group in a presence of a thiol compound, and subsequently processing the reaction mixture with maleic anhydride and a basic compound. The molding material includes the (meth)acryl syrup, and may also include a thickening agent, derivatives of succinic acid, a reinforcing material, etc.
摘要:
A low-shrinkage unsaturated polyester resin composition suited for SMC, BMC, etc. The composition consists of (a) 20 to 50 wt% of unsaturated polyester having a number-average molecular weight of not more than 300 per double bond, (b) 25 to 65 wt% of copolymerizable monomer, (c) 5 to 25 wt% of saturated polyester having a number-average molecular weight of 3,000 to 30,000, and (d) 2 to 20 wt% of liquid isoprene rubber or of a 10 to 90% hydrogenated product thereof, with the sum total of components (a), (b), (c), and (d) of 100 wt%.