A method for the production of peroxide, durable pastes with delayed, long permanent oxidation effect

摘要

1,163,309. Polyethylene oxide compositions. ELEKTROCHEMISCHE WERKE MœNCHEN A.G. 7 Dec., 1966 [15 Dec., 1965], No. 54773/66. Heading C3R. A peroxide-containing paste which may be used for curing unsaturated polyester or acrylic resins comprises; (a) a. solid organic peroxide, (b) water, and (c) a polyethylene oxide material which melts at a temperature below that at which the peroxide decomposes and which in admixture with (a) and (b) melts at below ambient temperature, such material being one or more polyethylene oxide compounds optionally admixed with up to 20% by weight of the entire composition of one or more organic compounds which are soluble therein and do not react with the components of the composition. Polyethylene glycols are preferred as the polyethylene oxide material. The organic peroxide may represent from 20-65% by weight of the composition and water from 2-30% by weight of the peroxide. Hydrophobic de-sensitizers for the peroxide, such as phthalic acid esters, and which are soluble in the polyethylene oxide, may be incorporated into the composition and the paste may also contain dispersing or emulsifying agents, e.g. alkyl phenyl polyglycol ethers.