83results about How to "Reduce yellowness" patented technology

In the invention, a polyester resin having dicarboxylic acid constitutional units and diol constitutional units wherein 5 to 60 mol % of the diol constitutional units has a cyclic acetal skeleton is produced by a process including an oligomerization step and a polymerization step. In the oligomerization step, an ester having a limited acid value is transesterified with a diol having a cyclic acetal skeleton in the presence of a titanium compound to obtain an oligomer. The oligomer is then polymerized in the subsequent polymerization step to increase the molecular weight.

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.

To provide a skin care composition having effects of anti-inflammation, moisturization, and whitening of skin yellowing.SOLUTION: The present invention discloses application of a fermentation product in preparing reagents for anti-inflammation, moisturization, or whitening of skin yellowing, the fermentation product is prepared from thermus thermophilus and yeast through fermentation co-culture, a thermus thermophilus and yeast co-fermentation method comprising the following steps: firstly, carrying out bacterium increase fermentation once or multiple times on yeast at low temperature under acidic condition after a logarithmic phase, increasing the temperature of a fermentation liquid to a high temperature from a low temperature, adding thermus thermophilus, and carrying out secondary fermentation under alkaline condition. The method includes the steps of: (1) performing one-time or multi-time fermentation to saccharomyces cerevisiae at low temperature under acidic condition, thus reproducing the yeast; and (2) when the yeast is in a later period of a logarithmic phase, increasing the temperature, inoculating the thermus thermophilus, and performing second fermentation under alkaline condition, thereby producing a fermentation product.SELECTED DRAWING: Figure 1

A polyvinyl acetal film as an intermediate film for a laminated glass, can provide a laminated glass that exhibits a low degree of yellowness and excellent surface appearance, and is useful as a sealing material or intermediate film that can prolong the life of a laminated glass provided with a solar cell or functional unit. The content of corrosion-causing substance in the polyvinyl acetal film is low, so that the polyvinyl acetal film permits high-temperature lamination and ensures excellent productivity. A solar cell module and a laminated glass are prepared using the polyvinyl acetal film. A plasticized polyvinyl acetal film which comprises 15 to 60 parts by mass of a plasticizer having a total number of 28 or more of carbon atoms and oxygen atoms constituting a molecule based on 100 parts by mass of a polyvinyl acetal resin, and which has an acid value of 5.0 meq / kg or less.

The invention provides a photosensitive polyimide resin composition, which comprises (a) photosensitive polyimide represented by a formula (1); (b) a filling agent, which is one or more of alumina, graphene, inorganic clay, silicon oxide, and zinc oxide and has a diameter of 10 nanometers to 1.0 micrometer; (c) a photo free radical initiator; (d) a free radical polymeric compound; and (e) a solvent, which is used to dissolve the photosensitive polyimide, wherein X is originated from tetracarboxylic dianhydride, Y is originated from diamine, and m is a positive integer selected from 1 to 5000.