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97results about How to "Prevent photoaging" patented technology

Radiation-curable pressure-sensitive adhesive composition for optical members, and pressure-sensitive adhesion type optical members

Provided is a radiation-curable pressure-sensitive adhesive composition for optical members. When being cured (crosslinked), the radiation-curable pressure-sensitive adhesive composition can attain sufficient progression of crosslinking reaction, without suffering from the inhibition of reaction caused by excessive scavenging of free radicals. When used in bonding adherends, the radiation-curable pressure-sensitive adhesive composition exhibits excellent durability and light leak resistance even under high-temperature conditions or high-temperature and -humidity conditions, and further is inhibited from photoaging and thus prevents the occurrence of faults associated therewith. A radiation-curable pressure-sensitive adhesive composition for optical members, which comprises (A) a specific (meth)acrylic copolymer, (B) a radiation-curable acrylic compound having two (meth)acryloyl groups in the molecule, (C) a radiation-curable acrylic compound having 3 to 10 (meth)acryloyl groups in the molecule, (D) a hydrogen-abstraction type photopolymerization initiator, (E) an isocyanate-type crosslinking agent having two or more isocyanate groups in the molecule, and (F) a specific light stabilizer in specific amounts respectively.
Owner:SOKEN CHEM & ENG CO LTD

Anti-ultraviolet halogen-free flame-retardant PC/ABS (polycarbonate/acrylonitrile butadiene styrene) alloy and method for preparing same

The invention discloses anti-ultraviolet halogen-free flame-retardant PC / ABS (polycarbonate / acrylonitrile butadiene styrene) alloy and a method for preparing the same. The anti-ultraviolet halogen-free flame-retardant PC / ABS alloy comprises, by weight, 30-55 parts of polycarbonate, 20-45 parts of ABS resin, 1-15 parts of halogen-free flame retardants, 3-8 parts of toughening agents, 2-5 parts of compatibilizers, 0.3-2 parts of light stabilizers, 0.5-5 parts of nano-metal oxide, 0.3-1 part of antioxidants and 0.3-0.5 part of lubricants. The method includes 1), adding various raw materials intoa high-speed stirring machine and uniformly mixing the various raw materials with one another; 2), adding materials obtained at the step 1) into a twin-screw extruder and carrying out extruding, rinsing drawing, grain-sized dicing and drying. The anti-ultraviolet halogen-free flame-retardant PC / ABS alloy and the method have the advantages that the anti-ultraviolet halogen-free flame-retardant PC / ABS alloy is excellent in anti-ultraviolet ability, ageing resistance, flame-retardant property and comprehensive performance and high in impact strength, processes for preparing the anti-ultraviolet halogen-free flame-retardant PC / ABS alloy are simple, and large-scale industrial production can be facilitated.
Owner:GUANGDONG JUSHI CHEM CO LTD

Heating facial mask having moistening efficacy and preparation method of heating facial mask having moistening efficacy

The invention relates to a heating facial mask having moistening efficacy and a preparation method of the heating facial mask having moistening efficacy. The heating facial mask comprises the following components in parts by weight of 60-95 parts of glycerine, 5-35 parts of skin care fat, 1-5 parts of an emulsifying agent and 0.1-0.5 part of a thickening agent. The heating facial mask contains theglycerine, the skin care fat, the emulsifying agent and the thickening agent in a specific proportion by weight. The system of the facial mask is a nonaqueous phase system. When the heating facial mask is used for a face, alocholic hydroxyl groups of the glycerine are in contact with moisture at the surface layer of skin, hydration molecules are formed, heat quantity is immediately and quickly released, mild heating effects are provided for the skin, and active ingredients are promoted to enter deep layers of the skin to exert effects; besides, the glycerine is also an excellent hydrating agent, not only can maintain the shape of a product and prevent dry shrinkage but also can achieve moisturizing effects, and can bring delighted sense for the skin; and the skin care fat brings excellentmoistening effects for the facial mask, and the emulsifying agent and the thickening agent help to provide stability for the facial mask system.
Owner:GUANGZHOU HUANYA COSMETIC SCI & TECH CO LTD

Light-blocking PE (polyethylene) film for food packaging

The invention relates to a light-blocking PE (polyethylene) film for food packaging, which is used for packaging food. Through the addition of riboflavin as a photosensitizer to PE master batch, the blocking performance of the PE film to the illumination at a specific wave band, the contact between the illumination at a specific wave band and the PE film is blocked, and the illumination oxidation of the packed food is retarded. A preparation method of the light-blocking PE film comprises the following steps: (1) mixing the PE master batch and riboflavin, placing into a double-roll plastic mixing mill for plastication, wherein the extrusion temperature is 130-140 DEG C; (2) placing extruded stock in the middle of two independent press plates, placing the press plates into a press vulcanizer, prepressing at a hot pressing temperature of 155-165 DEG C under a hot pressing pressure of 0.4-0.6MPa for 3-4min to melt the extruded stock, and uniformly distributing the melted extruded stock into the press plates; and (3) setting the pressure of the press vulcanizer to 10-11MPa, keeping hot pressing for 3-4min, taking out the press plates, placing into a pressure forming machine, and pressing under a pressure of 4.5-5.5MPa at room temperature for 5-6min. Through the addition of the photosensitizer riboflavin to the PE master batch, the absorption performance of the PE film to illumination is improved, the contact between the illumination and the packed food is blocked, and the illumination oxidation of the food is retarded.
Owner:JIANGNAN UNIV

Skin care composition capable of dispelling wrinkles and resisting ageing, and purpose of skin care composition capable of dispelling wrinkles and resisting ageing

The invention provides a skin care composition capable of dispelling wrinkles and resisting ageing, and a purpose of the skin care composition capable of dispelling wrinkles and resisting ageing, andbelongs to the technical field of cosmetics. The composition comprises growth factors comprising recombinant human crust growth factors, hydrating agents comprising low molecular weight hyaluronic acid which exists in protective colloid and exists in the form of dispersoid, an active peptide composition comprising acetyl hexapeptide-3 and acetyl hexapeptide-8, and an antioxidant which exists in the form of lipid nanocapsules and comprises astaxanthin and lycopene. The composition provided by the invention can arouse cell activity, delay running off of protein, promote increase of protein content, repair skin injury, retain water, replenish water, reduce the dissipating quantity of skin moisture, controlling water-oil balance, increase skin elasticity and alleviate skin photoaging, is highin transdermal absorption efficiency and absorption rate, high in retention volume and effective utilization rate and good in storage stability, and can restrain the activity of matrix metalloproteinase-1; and the composition can be used for cosmetics, wound surface rehabilitation materials or / and scar reduction materials.
Owner:张传旋
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