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After an extended burial period of 13 weeks, the fabric lost only 31% of its strength. Under similar conditions of burial, the control lost 73 and 100%, respectively, of its initial strength.Results of the tests show that copper 8-quinolinolate-treated fabric gave excellent field performance in every respect.

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Vol. 67 droxide according to the method indicated, but not described by Claisen.4 To 125 g. of potassium hydroxide in 400 cc. of absolute alcohol was added 198 g. of a-bromo-/Sethoxypropionaldehydediethylacetal and the mixture refluxed in an atmosphere of nitrogen for two hours. Insoluble solids were filtered off and the filtrate distilled under vacuum.The residue from the distillation was extracted with ether and the extract concentrated and combined with the first distillate. Redistillation yielded 110 g. (80%) of the desired product, b. p. 94-96°( 20 mm.

In connection with projects (1) concerned with the production and subsequent cross-linkage of unsaturated acrylic resins, various monomers containing two or more olefinic linkages were required. This paper describes the preparation of

Rubberlike materials, designated as Lactoprene, were prepared In earlier investigations by copolymerizing ethyl acrylate with small proportions of butadiene, Isoprene, or allyl maleate, compounding the resulting copolymers (assumed to have olefinic unsaturation) with sulfur and accelerators, and then curing the compounded products.

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