Chapter 4. ADDITIVES IN POLYMERS
Traditional additives are added in powder form, ... polymer/additive formulation, typically fatty alcohols or phosphoric esters. ... Antioxidants (AO) are chemical compounds which protect polymers
Phenolic Antioxidant - an overview | ScienceDirect Topics
In food contact and medical grade PVC, good stabilization was obtained by a combination of zinc carboxylate, alkyl ester of thiodipropionic acid, and phenolic antioxidant. 312. A halogen containing polymer in the form of an aqueous suspension or emulsion contains a partially hindered phenolic antioxidant and selected sulfur containing
(PDF) Additives in Polymers - Share and discover research
Additives are ubiquitously used in plastics to improve their functionality. However, they are not always desirable in their 'second life' and are a major bottleneck for chemical recycling.
Antioxidants. Antioxidants decelerate undesired oxidative degradation processes in plastics in a targeted manner which can lead to discolourations until the loss of serviceability. Furthermore antioxidants also protect against thermally induced ageing and thus serve as process stabilisers during the plastics processing.
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Research and Development | Additives for polymers | ADEKA Polymer
The ADEKA Corporation is committed to the plastics industry, plastics stabilization and plastics quality improvement by developing highly sophisticated products in accordance with market trends and needs and in accordance with environmental requirements. ADEKA has a dedicated Research & Development group equipped with latest and modern facilities for testing and evaluation of additives
Introduction of Polymer additives | Chemical Products｜ADEKA
Classification of Polymer Additives. Polymer additives can broadly be classified as polymer stabilizers or functional agents. Polymer stabilizers are essential to practical use, since they maintain the inherent properties, color, and other characteristics of plastics by preventing the oxidative degradation caused by high temperature during processing, and ultraviolet exposure during use.
Additives & Modifiers - Mitsubishi Chemical Corporation
Additives & Modifiers of Mitsubishi Chemical Corporation. METABLEN P type is an acrylic processing aid that offers significant benefits to processors of PVC, ABS, polycarbonate and other thermoplastics.
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 excited states and HALS.
Solutions to Breakthrough | Addivant
Our broad range of antioxidants, light stabilizers, polymerization inhibitors, polymer modifiers, antiozonants & curing agents are employed to either aid processing, to chemically modify the polymer or to combat degradation, thereby extending a product’s life, appearance & performance by maintaining its strength, stiffness or flexibility.