32results about How to "No reduction in physical properties" patented technology

A flame resistant synthetic resin composition is characterized in that 1-40 parts by mass of at least one of organophosphorus compounds represented by the following general formula (1): (wherein R<1> represents an alkyl group, an aralkyl group or the like) is blended per 100 parts by mass of a synthetic resin.

It is an object of the invention to provide a method for producing an optical element having a multi-layered antireflection film formed on a synthetic resin substrate, in which the antireflection film formed has good heat resistance, and its heat resistance lowers little with time. The method makes it possible to form high-refraction layers within a shorter period of time, not detracting from the good physical properties intrinsic to the layers. At least one high-refraction layer of the multi-layered anti-reflection film contains niobium oxide, zirconium oxide, yttrium oxide, and optionally aluminum oxide.

A room-temperature-curable polyorganosiloxane composition which can become a silicone rubber having a matte surface and does not decrease in physical properties. Specifically, the room-temperature-curable polyorganosiloxane composition comprises: (A) 100 parts by weight of a substantially linear polyorganosiloxane which has a viscosity at 25 DEG C of 20-1,000,000 cSt and in which the molecular chain ends have been blocked with a silanol group or a silicon-bonded hydrolyzable group; (B) 0.1-15 parts by weight of an organosilicon compound having three or more silicon-bonded hydrolyzable groups per molecule; (C) 0-15 parts by weight of a condensation catalyst; (D) 100-400 parts by weight of untreated heavy calcium carbonate or heavy calcium carbonate whose surface has been treated with a resin acid; and (E) 1-200 parts by weight of untreated lightweight calcium carbonate or lightweight calcium carbonate whose surface has been treated with a resin acid (provided that at least one of the ingredients (D) and (E) must have been treated with a resin acid and that the proportion of the ingredient (D) is 50-99.9 wt.% of the sum of the ingredients (D) and (E)).

The invention discloses a water-retention treating agent for latex fiber boards, a preparation process of the water-retention treating agent and a water-retention method. The water-retention treating agent for latex fiber boards is characterized by comprising, by the total mass fraction of 100%, 0.35-0.70% of a moisture absorbent, 0.30-0.60% of a deliquescing agent, 0.35-0.70% of an adhesive and 98.0-99.0% of water. The water-retention treating agent for latex fiber boards can permeate latex fiber boards effectively under high temperature conditions and under the action of pressure, so that moisture of latex fiber boards can be increased, and even if the environment humidity changes, the balanced moisture of latex fiber boards can also be in the normal state and is not changed obviously with environments. By the aid of the water-retention treating agent for latex fiber boards, 10.0% of the long fiber usage amount can be reduced, simultaneously, physical properties of materials are not reduced, and overall indicators of products can meet product quality requirements and can meet machining performance requirements and usage performance requirements of products, so that costs are reduced, and benefit can be increased.

A xylylenediamine composition comprising xylylenediamine and a pyridine compound (A) having at least one substituent comprising an amino group, the content of the pyridine compound (A) relative to 100 parts by mass of xylylenediamine is 0.001 to 0.1 parts by mass; and [2] a method for producing a polyamide resin comprising a pyridine compound (A) having at least one substituent containing an amino group, a diamine containing xylylenediamine (wherein, not Including the step of introducing (diamine) corresponding to the aforementioned pyridine compound (A) and dicarboxylic acid into the reaction system to carry out polycondensation reaction, the introduction amount of the pyridine compound (A) is 0.001 to 100 parts by mass of xylylenediamine 0.1 parts by mass.

The invention discloses a preparation method of an attapulgite modified bio-based polyurethane foam insulation material. The preparation method comprises the steps of compounding propanediol obtained by liquefying cellulosic biomass and attapulgite to obtain compound propanediol, and compounding modified attapulgite obtained through acid modification and organic modification and isocyanate to obtain compound isocyanate; mixing propanediol or compound propanediol, a foam stabilizer, a foaming agent and a catalyst uniformly to obtain a viscous mixture; quickly adding isocyanate or compound isocyanate to the viscous mixture in a stirring state, and aging the product at a certain temperature for a while after complete foaming and curing, thus obtaining a rigid polyurethane foam insulation material with a flame retardant function. The preparation method has the characteristics of simple process, low production cost, no need for special equipment, easiness in implementation of industrialization and the like. The polyurethane foam insulation material is a rigid foamed plastic with good flame retardance.