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  2. Polymer stabilizer - Wikipedia

    en.wikipedia.org/wiki/Polymer_stabilizer

    Light stabilizer are used to inhibit polymer photo-oxidation, which is the combined result of the action of light and oxygen. Like autoxidation this is a free radical process, hence the antioxidants described above are effective inhibiting agents, however additional classes of additives are also beneficial, such as UV absorbers, quenchers of ...

  3. Stabilizer (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Stabilizer_(chemistry)

    ultraviolet stabilizers are used to protect polymers from effects of ultraviolet radiation and come to 2 main types. UV absorbers which essentially act the same way as sunscreens Quenchers, which dissipate the radiation energy as heat instead of letting it break chemical bonds; often organic nickel salts, e.g. nickel phenolates

  4. Hindered amine light stabilizers - Wikipedia

    en.wikipedia.org/wiki/Hindered_amine_light...

    Hindered amine light stabilizers (HALS) are chemical compounds containing an amine functional group that are used as stabilizers in plastics and polymers. [1] These compounds are typically derivatives of tetramethylpiperidine and are primarily used to protect the polymers from the effects of photo-oxidation; as opposed to other forms of polymer degradation such as ozonolysis.

  5. Emulsion stabilization using polyelectrolytes - Wikipedia

    en.wikipedia.org/wiki/Emulsion_stabilization...

    Polyelectrolytes are charged polymers capable of stabilizing (or destabilizing) colloidal emulsions through electrostatic interactions. Their effectiveness can be dependent on molecular weight, pH, solvent polarity, ionic strength, and the hydrophilic-lipophilic balance (HLB).

  6. Dispersion polymerization - Wikipedia

    en.wikipedia.org/wiki/Dispersion_polymerization

    In polymer science, dispersion polymerization is a heterogeneous polymerization process carried out in the presence of a polymeric stabilizer in the reaction medium. . Dispersion polymerization is a type of precipitation polymerization, meaning the solvent selected as the reaction medium is a good solvent for the monomer and the initiator, but is a non-solvent for the po

  7. Photo-oxidation of polymers - Wikipedia

    en.wikipedia.org/wiki/Photo-oxidation_of_polymers

    Dyes and pigments are used in polymer materials to provide colour, however they can also effect the rate of photo-oxidation. Many absorb UV rays and in so doing protect the polymer, however absorption can cause the dyes to enter an excited state where they may attack the polymer or transfer energy to O 2 to form damaging singlet oxygen.

  8. Tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate - Wikipedia

    en.wikipedia.org/wiki/Tris(3,5-di-tert-butyl-4...

    Tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate is a chemical compound used as a polymer stabilizer in plastics. Like other hindered phenols it acts as a primary antioxidant. More than 1000 tonnes per year are used in the EU.

  9. Stabilizer - Wikipedia

    en.wikipedia.org/wiki/Stabilizer

    Stabilizer (chemistry), a substance added to prevent unwanted change in state of another substance Polymer stabilizers are stabilizers used specifically is plastic or other polymers; Stabilizer (food), a type of food additive; Wood stabilization, a wood preservation process to prevent distortion caused by moisture; Clarification and ...