Disclosed is a micro-surfacing sealing coat mixture, comprising the following raw materials in parts by weight: 10-20 parts of a cationic emulsified asphalt, 5-7 parts of an ethylene-1-octene copolymer, 3-6 parts of an organic silicone resin, 8-12 parts of a filler, 80-90 parts of an aggregate, 2-4 parts of a ditertiarybutyl peroxide, 20-30 parts of water, and 0.5-2 parts of an accelerator. The method for preparing the micro-surfacing sealing coat mixture comprises: weighing raw materials other than the filler, aggregate and water, adding to a high-speed shear emulsifier and mixing at a temperature of 170-175? C. for 20-35 min, then continuously shearing at 3000-3500 r/min for 60 min to obtain a modified emulsified asphalt; cooling the modified emulsified asphalt to 20-30? C., adding the filler, aggregate and water thereto, and adding the resulting mixture to a mixer to mix evenly to obtain the micro-surfacing sealing coat mixture.

Disclosed is a micro-surfacing sealing coat mixture, comprising the following raw materials in parts by weight: 10-20 parts of a cationic emulsified asphalt, 5-7 parts of an ethylene-1-octene copolymer, 3-6 parts of an organic silicone resin, 8-12 parts of a filler, 80-90 parts of an aggregate, 2-4 parts of a ditertiarybutyl peroxide, 20-30 parts of water, and 0.5-2 parts of an accelerator. The method for preparing the micro-surfacing sealing coat mixture comprises: weighing raw materials other than the filler, aggregate and water, adding to a high-speed shear emulsifier and mixing at a temperature of 170-175? C. for 20-35 min, then continuously shearing at 3000-3500 r/min for 60 min to obtain a modified emulsified asphalt; cooling the modified emulsified asphalt to 20-30? C., adding the filler, aggregate and water thereto, and adding the resulting mixture to a mixer to mix evenly to obtain the micro-surfacing sealing coat mixture.

The invention also concerns a binder for an injection molding composition including: from 35 to 54% by volume of a polymeric base, from 40 to 55% by volume of a mixture of waxes, and approximately 10% by volume of a surfactant, wherein the polymeric base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene and vinyl acetate, or copolymers of ethylene including maleic anhydride or a mixture of these copolymers, as well as polyethylene, polypropylene and acrylic resin.

The invention also concerns a binder for an injection molding composition including: from 35 to 54% by volume of a polymeric base, from 40 to 55% by volume of a mixture of waxes, and approximately 10% by volume of a surfactant, wherein the polymeric base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene and vinyl acetate, or copolymers of ethylene including maleic anhydride or a mixture of these copolymers, as well as polyethylene, polypropylene and acrylic resin.

A light-shielding film for optical element includes at least a resin and a colorant. The light-shielding film for optical element has an average extinction coefficient of 0.03 or more and 0.15 or less as an average of extinction coefficients of the whole light-shielding film for light having wavelengths ranging from 400 to 700 nm.

A coating and devices using the coating are provided. The coating is applied in liquid form and dried or otherwise cured to form a durable adherent coating resistant to high temperatures and having optional hydrophobic properties. The coating formulation contains an aqueous formulation of silica, one or more fillers, and sufficient base, (e.g., potassium hydroxide), to have a pH exceeding about 10.5 during at least part of the formulation process. The formulation may contain a compound(s) that affects surface free energy, energy to make the cured coating hydrophobic. Such compounds include silanes containing halogens (e.g., fluorine or chlorine) and in particular silanes containing one or more hydrolyzable groups attached to at least one silicon atom and a group containing one or more halogens (e.g., chlorine or fluorine). A medical instrument (e.g., electrosurgical instrument) may be at least partially covered by a coating using the formulation.

A coating and devices using the coating are provided. The coating is applied in liquid form and dried or otherwise cured to form a durable adherent coating resistant to high temperatures and having optional hydrophobic properties. The coating formulation contains an aqueous formulation of silica, one or more fillers, and sufficient base, (e.g., potassium hydroxide), to have a pH exceeding about 10.5 during at least part of the formulation process. The formulation may contain a compound(s) that affects surface free energy, energy to make the cured coating hydrophobic. Such compounds include silanes containing halogens (e.g., fluorine or chlorine) and in particular silanes containing one or more hydrolyzable groups attached to at least one silicon atom and a group containing one or more halogens (e.g., chlorine or fluorine). A medical instrument (e.g., electrosurgical instrument) may be at least partially covered by a coating using the formulation.