7results about How to "Improve initial whiteness" patented technology

This invention relates to the field of polymer materials, specifically to an automotive interior material and its preparation method, comprising PVC resin and a composite heat stabilizer; the composite heat stabilizer comprises a calcium-zinc heat stabilizer, a polyol phosphate ester, and amino POSS, wherein the mass ratio of the PVC resin to the composite heat stabilizer is 20-40:1, and the mass ratio of the calcium-zinc heat stabilizer, the polyol phosphate ester, and the amino POSS is 1-5:1-5:1-5. The automotive interior material prepared by this invention has good thermal stability and mechanical properties, and excellent heat aging resistance.

The invention relates to the technical field of heat stabilizers, in particular to the field of IPC C08K5, and more particularly relates to a PVC heat stabilizer and application thereof. The invention relates to a high-temperature-resistant flame retardant, which is prepared from the following components in percentage by weight: 5 to 20 percent of organic acid zinc salt, 2 to 15 percent of beta-diketone, 1 to 5 percent of polyhydric alcohol, 0.5 to 2 percent of nucleating agent, 1 to 10 percent of fatty acid lubricant and the balance of ternary hydrotalcite. When the modified PVC crystal plate is applied to the PVC crystal plate, the initial whiteness is considered, the long-term heat resistance and color fastness are prolonged, and meanwhile, the lasting heat resistance can be increased.

The invention discloses a guanine PVC heat stabilizer and application thereof, and belongs to the technical field of heat stabilizers. The heat stabilizer is guanine or guanosine or a compound of a main stabilizer and an auxiliary stabilizer, the main stabilizer is guanine or guanosine, and the auxiliary stabilizer is at least one of a calcium salt stabilizer, a zinc salt stabilizer and a polyol stabilizer. The guanine heat stabilizer can improve the initial whiteness of PVC, endows the PVC with good long-term stability, can be used for preparing PVC composite materials, improves the heat stability and mechanical properties of the PVC composite materials, and meets the use requirements of the PVC composite materials in most scenes.

The invention belongs to the technical field of polymer materials, and specifically relates to an environmentally friendly stabilizer for low-calcium PVC products and a preparation method thereof. The main stabilizer, pentaerythritol, uracil, monoglycerol stearate, and PE wax are mixed in a mass ratio of 10:3:2:1:1 to prepare the environmentally friendly stabilizer for low-calcium PVC products. The heat stabilizer for low-calcium PVC products prepared by the invention is green and environmentally friendly, and makes PVC have better thermal stability, and at the same time, the anti-ultraviolet performance is significantly improved.

This invention discloses an adenine-based heat stabilizer and its application in PVC composites, belonging to the field of heat stabilizer technology. The heat stabilizer is an adenine-based substance or a compound of an adenine-based substance and an auxiliary stabilizer. The adenine-based substance is adenine or adenine nucleoside, and the auxiliary stabilizer is at least one of calcium salt stabilizers, zinc salt stabilizers, and polyol stabilizers. This adenine-based heat stabilizer can improve the initial whiteness of PVC and impart better long-term stability to PVC. Its application in PVC composites can effectively improve the thermal stability and mechanical properties of PVC composites, possessing practical application value.

The invention belongs to the technical field of high polymer materials, and particularly relates to an environment-friendly stabilizer for a low-calcium PVC (polyvinyl chloride) product and a preparation method of the environment-friendly stabilizer, and the environment-friendly stabilizer for the low-calcium PVC product is prepared by mixing a main stabilizer, pentaerythritol, uracil, monoglyceryl stearate and PE (polyethylene) wax according to the mass ratio of 10: 3: 2: 1: 1. The heat stabilizer for the low-calcium PVC product prepared by the invention is green and environment-friendly, so that PVC has better heat stability, and meanwhile, the ultraviolet resistance is obviously improved.

The present application relates to the technical field of LED packaging material, and particularly relates to a white resin composition for LED packaging, a preparation method and application thereof. According to weight parts, the raw materials for preparing the resin composition include: 100 parts of epoxy resin, 0.1-5 parts of first antioxidant, 0.1-5 parts of second antioxidant, 120-170 parts of curing agent, 0.1-5 parts of catalyst, 600-1300 parts of inorganic filler, 150-600 parts of white pigment, 1-10 parts of release agent, and 0.1-2 parts of whitening agent; the first antioxidant includes hindered phenolic antioxidant; the second antioxidant includes phosphorus-hydrogen bond-containing phosphinate antioxidant; and the release agent includes polyether-modified dimethylsiloxane. The obtained composition has high reflectivity, heat discoloration resistance and good de-runner workability, and can meet the packaging requirements of LED support.