Unsaturated halogen containing

The complex of physical-chemical properties enable to hold out the unsaturated halogen containing block-copolysulfonarilats as warm-, thermo- and fire-proof constructive and membranous materials. The accessibility of the feedstock for receiving monomers on the basis of chloral, and also the manufacturability acceptor-catalytic polycondensation mekes it possible to refer the new halogen containing unsaturated block-copolysulfonarilats to industrialy-perspective polymeric materials. 

AS A FLAME RETARDANT. The zinc borate is an efficient synergist of organic halogen sources. In certain halogen-containing systems such as unsaturated polyester, epoxy (3), and rigid PVC, the zinc borate alone can outperform antimony oxide as shown by the Oxygen Index and UL-94 tests (Fig. 3, 4, and 5). 

A very active elemental rhodium is obtained by reduction of rhodium chloride with sodium borohydride [27]. Supported rhodium catalysts, usually 5% on carbon or alumina, are especially suited for hydrogenation of aromatic systems [iTj. A mixture of rhodium oxide and platinum oxide was also used for this purpose and proved better than platinum oxide alone [i5, 39]. Unsaturated halides containing vinylic halogens are reduced at the double bond without hydrogenolysis of the halogen [40]. 

Dissociation of Halogen-Containing Compounds. Halogenated compounds, particularly those containing bromine or iodine, are likely to undergo photoelimination of the halogen atom. p-Bromobutyrophenone (7) yields butyrophenone, HBr, and butyrophenones with unsaturated alkyl side chains when irradiated in toluene.25,44 The quantum yield for butyrophenone... 

Halogen-containing borate ester such as tris(2,3-dibromopropyl)borate [B(OCH2CHBrCH2Br)3] is reportedly used in polyurethanes, unsaturated polyesters, and epoxy novolacs.89 More recently, it was also claimed to be used in cotton textiles.89... 

The present contribution reports the first results of a systematic approach to a study of the reaction and the products obtained in the liquid-phase ozonolysis of unsaturated substrates containing halogenated double bonds. As a model case the ozonolysis of trans-2,3-dibromo-2-butene was studied. Ozonolysis occurs at a slower rate than that of pure hydrocarbon olefins and less than equimolar amounts of ozone are sufficient for the quantitative conversion of the substrate. Double bond cleavage is not the overriding reaction, but the original double bond is to a large extent converted into C—C single bonds which are fairly stable towards further ozone attack. 

Polycarbobetaines may be synthesized via a number of reaction pathways by functionahzation of suitable monomers or polymers, most commonly by reaction of a tertiary amine with a strained lactone, an a, -unsaturated acid, a haloalkylcarboxylate, or a haloalkylcarboxyhc ester followed by hydrolysis of the ester. Alternatively, the quaternization of halogen-containing... 

Unsaturated nitriles prepared by the dehydration of amides include 1-cyano-1-alkynes, e.g. 1-cyano-l-heptyne (85%), and 1-cyano-l-alkenes, e.g. /3-isopropylacrylonitrile (80%). Some dehydrating agents such as phosphorus pentachloride may lead to the formation of halogen-containing products phosphorus pentoxide is preferred in these cases. In a comparison of methods for preparing olefinic nitriles, it has been shown that... 

The effect of variation in the alkyl group of diacyl peroxides upon the rate of decomposition has been extensively investigated. For convenience the data are divided into decompositions of alkyl and aryl alkyl diacyl peroxides including benzoyl and phthaloyl peroxide for reference (Table 78), halogen containing diacyl peroxides (Table 79), unsaturated diacyl peroxides (Table 80), cycloalkyl diacyl peroxides (Table 81) and unsymmetrical diacyl peroxides (Table 82). The data pertain to first-order decompositions and the rate coefficients are represented as... 

Addition reactions involve unsaturated compounds containing double or triple bonds, particularly C=C and C=C. Hydrogenation and reactions of hydrogen halides and halogens with alkenes and alkynes are examples of addition reactions. 

A large number of halogen-containing reactive diols, polyols, anhydrides, and other functional groups containing intermediates have been used to produce flame-resistant unsaturated polyester resins. Flame-retardant polyester resins have been made by using broraostyrene as partial replacement of styrene for cross-linking (21). 

G3 theory was designed to correct some of the dehciencies of G2 theory for systems such as halogen-containing molecules, unsaturated hydrocarbons, etc. It also contains... 

Skinner, G. A., Parker, L. E. and Marshall, P. J. Flame retardant synergism between molybdenum and halogen containing compounds in unsaturated polyesters. Fire and Materials, 1, No. 4, 154 (1976)... 

Borates Molybdenum compounds Zinc Borate, Barium Metaborates, Ammonium Fluoroborate, Boric Acid Flexible PVC, polyolefins, unsaturated polyesters, thermoplastic polyesters, epoxies, nylons, urethanes, and phenolics Used in comhination with other retardants for flexible PVC and reinforced polyesters. Behave as synergists with halogen containing compounds CSA Chemical Harwich Chemical Corp. US Borax Chemical Corp. Climax Performance Materials CSA Chemical Sherwin WUhams Chemicals... 

Flush the aqueous solution remaining in the distillation flask down the drain. Do the same with the aqueous steam distillate once you have completed the extraction. Pour the solution from the test for unsaturation into the container for halogen-containing liquids. Neutralize the solution for the chromic acid test and then pour it into the container for hazardous heavy metals. 

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