Aristech Chemical Corporation

Virginia Piermattie

George L Brownell

Sharon Jones Elliott

Theodore R Wessendorf

Sharon J Elliot

Stanley A Rice

Richard P Herrle

Settlement of barnacles on surfaces in a marine environment is inhibited by employing as a construction material for said surface of polymers including methyl methacrylate and an effective amount (preferably about 2% to about 10%) of a copolymerizable N-substituted maleimide.

Inhibiting the settling of barnacles

Growth of zebra mussels on a surface is inhibited by making the surface from an unsaturated polyester having copolymerized therein about 1-40% N-phenyl maleimide.

Inhibiting the growth of zebra mussels

Polymer dispersed liquid crystals are made by mixing liquid crystals into a syrup of polymethylmethacrylate dissolved in polymerizable monomers comprising methyl methacrylate, and polymerizing to monomers, to obtain finely dispersed micelles of liquid crystals which change refractive index in response to an electric field.

Polymethylmethacrylate syrup as medium for liquid crystals

Thermosetting compositions comprise, (a) about 10% to about 60% of a polymerizable olefinic monomer such as styrene or vinyl toluene (b) from about 1 to about 40% of a maleimide of the formula: ##STR1## where R.sup.1 and R.sup.2 are independently selected from hydrogen or C.sub.1-3 alkyl groups, and in which the phenyl group may be substituted with aliphatic, alicyclic, and aromatic groups and up to three halogen or hydroxyl groups, and (c) about 5% to about 89% unsaturated polyester. The compositions are useful for their electrical and heat resistant properties as molding compositions, for the impregnation of electrical coils and for encasing electrical components.

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Pittsburgh, PA, United States of America

Virginia Piermattie