The production of dibromobutendiol (DBBD) was developed in a wasteless and environmentally friendly way. DBBD is effective as a fire retardant because of the amount of bromine. New unsaturated polyester resin with decreasing flammability was presented. The main monomers were dibromobutendiol and diallylic ether of dibromoneopentylglycol (DAP). Both monomers act effectively against oxygen inhibition, and bromine in their molecules decreased the flammability of obtained products. DAP has been obtained in direct allylation by the use of ally1 bromide on the interphase in the presence of proper catalysts-triethylallylammonium chloride. The obtained resins were UV curable. A photocuring system consisting of monoazide or diazide and hydroksyalkylphenone has been applied. The obtaining of new polyurethane foams via reaction of reactive oligomers with DBBD was studied. Well-known difficulties with the solubility of DBBD in polyol systems were solved.It was found that DBBD can be dissolved in polyol systems produced in Poland. The application of DBBD as an effective fire retardant was checked. The investigation of polyurethane foams was carried out and new fire-retardant foams were formulated. The structure of the monomer and the polymer were confirmed by Fouries transform infrared measurements. Our idea can be implemented to industrial practice.
ABSTRACT:The effect of the structure of allyl ethers used as built-in monomers of unsaturated polyester resins on the properties of the coatings obtained have been studied. It was found that high hardness of the coatings cured in air using photoinitiators was achieved for the resins with polyfunctional allyl ether monomers incorporated into polyester molecules as the end groups or as the pendant geminal groups. The influence of the presence of a cobalt organic salt on the hardness of the coating from unsaturated resins has also been studied. The extent of crosslinking for the copolymerization of fumaric esters with allyl ethers in air increases, and a smaller amount of photoinitiator may be used when cobalt (II) naphthenate is present in the resin. The results are discussed in terms of the oxidation of allyl ethers and redox cleavage of peroxides formed, leading to an increase in the rate of copolymerization of allyl ethers with fumarate esters.
The effect of the structure of allyl ethers used as built-in monomers of unsaturated polyester resins on the properties of the coatings obtained have been studied. It was found that high hardness of the coatings cured in air using photoinitiators was achieved for the resins with polyfunctional allyl ether monomers incorporated into polyester molecules as the end groups or as the pendant geminal groups. The influence of the presence of a cobalt organic salt on the hardness of the coating from unsaturated resins has also been studied. The extent of crosslinking for the copolymerization of fumaric esters with allyl ethers in air increases, and a smaller amount of photoinitiator may be used when cobalt (II) naphthenate is present in the resin. The results are discussed in terms of the oxidation of allyl ethers and redox cleavage of peroxides formed, leading to an increase in the rate of copolymerization of allyl ethers with fumarate esters.
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