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2 results about "Free Radical Suppression" patented technology
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Free Radical Suppression involves interference with, or restraint of, production in normal or pathological processes of chemically unstable, short half-life and highly reactive molecules carrying at least one unpaired or 'free' electron in the outermost electron shell. Appropriating electron(s) from a nearby molecule and damaging that molecule by altering the electron number in its outermost electron shell, Free Radicals produce tissue damage.
An ultraviolet aging resistant polycarbonate modified material and application thereof
The application discloses an anti-ultraviolet aging polycarbonate modified material and application thereof, and belongs to the technical field of polymer material modification. The material comprises synergistically modified polycarbonate, an organic small-molecule functional regulator, an antioxidant, a light stabilizer, a lubricating dispersant and an inorganic filler, wherein the synergistically modified polycarbonate is constructed into a multiple synergistic network by introducing a borate dynamic covalent structure, a Schiff base structure and a rare earth coordination structure, and the organic small-molecule functional regulator is p-hydroxybenzophenone. The preparation method comprises preparation of the synergistically modified polycarbonate and a subsequent melt blending and extrusion process. Through the technical scheme, the synergistic effect of ultraviolet absorption, energy transfer and free radical inhibition is realized, the yellowing degree of the material is significantly reduced, the mechanical property retention rate and the optical stability are improved, and the material is suitable for the fields of automobile transparent parts, outdoor optical materials and electronic and electrical shell.
Owner:ZHEJIANG JINMAO PLASTIC IND CO LTD
Composition for inhibiting color change of whitening agent as well as preparation method and application of composition
ActiveCN119587390Aprevent discolorationCosmetic preparationsToilet preparationsWhitening AgentsAstaxanthin
The invention belongs to the technical field of cosmetics, and discloses a composition for inhibiting color change of a whitening agent as well as a preparation method and application of the composition. The composition disclosed by the invention comprises the following components: pentaerythritol tetra (bis-tert-butyl hydroxy hydrocinnamic acid) ester, sodium pyrosulfite and astaxanthin. According to the invention, pentaerythritol tetra (bis-tert-butylhydroxyhydrocinnamate) ester, sodium pyrosulfite and astaxanthin are reasonably compounded, the three components play a synergistic role, and discoloration of the whitening agent is inhibited by interrupting free radicals, inhibiting electron transition, absorbing ultraviolet rays, inhibiting free radical reaction and the like.
Owner:GUANGZHOU HUANYA COSMETIC SCI & TECH CO LTD