Yeda Research and Develpment & Co. Ltd

Yael Allingham

David Vofsi

Saul A Gassner

The present invention relates to antifouling paints for marine use comprising a conventional paint base containing as active ingredient a compound of the formula ##STR1## wherein X is selected from chlorine and bromine,

Antifouling paints for marine use

The present invention relates to novel 2,5-dihalophenyl-.beta.-substituted sulfone compounds of the formula ##STR1## wherein Q is selected from ##STR2## and wherein: X designates chlorine or bromine,

Novel 2,5-dihalophenyl-.beta.-substituted sulfone fungicides

According to the invention there is provided a polymeric composition of matter substantially transparent to solar radiation and constituting an effective barrier to infra-red radiation, especially in the region of about 7.mu. to 15.mu., comprising polyethylene or a copolymer of mainly polyethylene, containing an effective quantity of a phosphate, having a preferred range of content of phosphate of from 1 to 20 percent by weight. There is also provided a tunnel-shaped or similar structure for the cultivation of agricultural crops comprising a cover of sheeting made of such polymer.

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Rehovot, Israel

Yael Allingham