82results about How to "Reduce yellowness" patented technology

Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that provide one or more of the following advantages: improving the reheat properties of the compositions, improving the color of the compositions through reduced yellowness, and improving the UV-blocking properties of the compositions. Processes for making such compositions are also disclosed. The titanium nitride particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for use in packaging made from processes in which a reheat step is desirable, or decreased yellowness is desired, or increased resistance to the effects of ultraviolet light is desired, or any combination of the foregoing.

Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles and carbon-coated iron particles to improve the reheat properties of the compositions. The compositions may also exhibit reduced yellowness, and improved resistance to the effects of UV light. Processes for making such compositions are also disclosed. The particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for use in packaging made from processes in which a reheat step is desirable, or decreased yellowness is desired, or increased resistance to the effects of ultraviolet light is desired, or any combination of the foregoing.

The invention discloses application of a fermentation product in preparing reagents for eliminating inflammation, moistening skin or whitening skin, the fermentation product is prepared from thermus thermophilus and yeast through fermentation co-culture, and a thermus thermophilus and yeast co-fermentation method comprises the following steps: firstly, carrying out bacterium increase fermentationonce or for multiple times on yeast at a low temperature under an acid condition, keeping in an index growth period, increasing the temperature of a fermentation liquid to a high temperature from a low temperature, adding thermus thermophilus, and carrying out secondary fermentation under an alkali condition. By adopting the method, active components of the thermus thermophilus can be remarkably enriched, particularly the contents of active components used in skin caring preparations can be increased, or the activity of the active components can be improved, and particularly the fermentation product has remarkable effects of gentle inflammation elimination, skin moistening and skin whitening.

A resin composition for optical stereolithography including a cation-polymerizable organic compound (A), a radical polymerizable organic compound (B), a cationic polymerization initiator (C) and a radical polymerization initiator (D) which is characterized by including, as a cationic polymerization initiator (C), an aromatic sulfonium compound (C-1) represented by the following general formula (C-1):

(in the above general formula (C-1), R¹, R² and R³ represents a monovalent organic group, Rf represents a fluoroalkyl group, m is the same number as the cationic charge of the “cation [S⁺(R¹) (R²) (R³)]”, n is an integer in the range of 0 to 6) as well as an aromatic thiol compound (E) represented by the following general formula (E):

R⁴—(—SH)_p   (E)

(wherein, R⁴ represents a mono- or di-valent aromatic hydrocarbon which may optionally have a substituent, p is an integer of 1 or 2.)

Shown are: a photocurable inkjet ink containing 3 to 60 wt % of a compound (A2) that has a skeleton structure consisting of at least three benzene rings and at least one group selected from the following organic groups a, wherein all bonds between the benzene rings are formed through one of the groups, and that has at least one group selected from the following organic groups d that are bonded to the benzene rings, and 1 to 60 wt % of a compound (B) represented by the following formula (7) or (8); a microlens obtained by photocuring the photocurable inkjet ink; a laminate obtained by forming the microlens on a liquid-repellent cured film; an optical component having the laminate; and an image display device including the optical component.

Provided is a titanium dioxide pigment having minimal yellow color and minimal yellowing due to exposure, i.e., good yellowing resistance and high pigment performance such as brightness. Also provided is a titanium dioxide pigment which has a reduced amount of volatile moisture and which does not readily decompose when blended with a resin or the like. In the present invention, a compound including 0.05-20% by mass of phosphorus and an alkaline earth metal is present on surfaces of titanium dioxide particles having an average particle diameter of 0.15-1.0 μm. The titanium dioxide pigment is manufactured by mixing an alkaline earth metal compound, a phosphate compound, and titanium dioxide particles having an average particle diameter of 0.15-1.0 μm, and bonding the compound including phosphorus and an alkaline earth metal to the titanium dioxide particles.

The present invention provides a polyamic acid composition comprising (a) a diamine; (b) a dianhydride containing a fluorinated primary dianhydride and an alicyclic secondary dianhydride; and (c) an organic solvent, wherein the alicyclic second dianhydride is contained in an amount of a range of 10 to 80 mol% based on 100 mol% of the total dianhydride, and a transparent polyimide resin film produced from the polyamic acid composition. Since a polyamic acid composition of the present invention has a high glass transition temperature and a low yellow index, the composition can be applied as a flexible display material.

The invention provides a polyamic acid solution, and a transparent polyimide resin film and a transparent substrate using the same. The polyamic acid solution comprises (a) an aromatic diamine mixturecontaining (a-1) fluorinated aromatic diamine and (a-2) non-fluorinated aromatic diamine; and (b) a dianhydride mixture containing (b-1) fluorinated aromatic dianhydride and (b-2) non-fluorinated dianhydride containing ab amido group; and (c) an organic solvent. The transparent polyimide resin film and the transparent substrate produced by imidizing such a polyamic acid solution are excellent inoptical characteristics and mechanical properties, and thus can be applied to a substrate for a flexible display device.

The invention discloses a low yellowness styrene-acrylonitrile-maleic anhydride copolymer and a preparation method thereof. The copolymer comprises the following components: 35-80 parts of styrene, 10-30 parts of acrylonitrile, 1-30 parts of maleic anhydride, and 1-20 parts of a fourth monomer. The bulk polymerization process is employed for production, and solves the problems of too yellow appearance, affected product appearance and the like in styrene-acrylonitrile-maleic anhydride copolymers produced by previous technologies. According to the invention, an oil-soluble initiator is employedto produce free radicals, and reaction is carried out under a low temperature condition so as to obtain the low yellowness terpolymer with low molecular weight distribution coefficient, the terpolymeris suitable for use as a compatibilizer of plastic alloys (PC/ABS, ABS/PET, PA/ABS, etc.), and does not affect the appearance of downstream modified products.

The invention discloses a gamma ray irradiation-resistant polypropylene material. The polypropylene material comprises PP (propene polymer), a stabilizer and an antioxidant. The invention also discloses a preparation method of the gamma ray irradiation-resistant polypropylene material. The preparation method comprises the following steps of: 1) drying raw materials; 2) putting the dried PP into boiling xylene, adding the dried stabilizer and antioxidant, fully dispersing, cooling to room temperature, leaching, drying so as to prepare a parent stock, putting the parent stock into an extruder, then melting, extruding, drawing, cooling, drying and granulating so as to prepare the polypropylene material. The polypropylene material prepared by the method has the advantages of better mechanical property, lower yellowness index, and gamma ray irradiation-resistant performance.

A method of purifying flue gas desulfurization (FGD) gypsum. The method includes the steps of a) providing an aqueous slurry containing said FGD gypsum, b) passing the aqueous slurry to a magnetic separator, and c) contacting the FGD gypsum to be purified with a solution containing an acid and having pH below 5 in an acid washing step. Also, a purified FGD gypsum obtained by the inventive method and the use thereof as coating or filler pigment for paper or board.

The invention relates to the technical field of high polymer materials, and discloses polylactic acid and a device and method for preparing polylactic acid. The device comprises a lactide melting tank, a first polymerization reactor, a second polymerization reactor and a monomer removal reactor which are connected in sequence, the monomer removal reactor comprises an electromagnetic vibration exciter, a stirring driving motor and a stirring driving device, the stirring driving motor is connected with the stirring driving device so as to regulate and control the stirring frequency of the stirring shaft, and the electromagnetic vibration exciter is connected with the stirring driving motor through a vibration transmission disc so as to enable the stirring driving motor to vibrate in the axial direction. The content of residual lactide in the polylactic acid prepared by the device is 0.08%, in addition, the conversion rate of polylactic acid is high, and industrial production can be realized.

A polyarylethersulfone polymer composition comprising a polyarylethersulfone having reduced yellowness and high light transmittance is provided. The composition includes an organic phosphorous-containing compound and at least one of the following two additives: a colorant, and an optical brightener. The polyarylethersulfone composition of the present invention is used to form molded articles suitable for food and beverage service, medical components, and lighting components.

The invention discloses quick-frozen dumpling wrappers with a red wine flavor and a preparation method thereof. The quick-frozen dumpling wrappers are prepared from the following raw materials in parts by weight: 100-120 parts of wheat flour, 1-2 parts of table salt, 5-7 parts of corn acetate starch, 1-2 parts of purple perilla meal, 2-3 parts of aloe juice, 15-20 parts of red wine, 2-4 parts of baby cabbage, 1-3 parts of auricularia auricula, 3-6 parts of broccoli and the balance of water. In the process, the red wine, broccoli and the like are processed and then prepared into powder to be added into wheat flour, so that the prepared dumpling wrappers has the unique flavor of the red wine.