Abstract: This invention describes an ionizing radiation sensitive material having high contrast, high sensitivity and comprised of the mixture of the half-ester or half amide product of reaction of an N-hydroxy or N-aminoalkyl amide with an alkylvinyl ether-maleic anhydride copolymer and the products of reaction of a hydroxy alkyl terminally unsaturated compound with an alkylvinyl ether-maleic anhydride copolymer. A typical material is made by mixing the product of reaction of hydroxyethyl pyrrolidone and octadecylvinyl ether--maleic anhydride copolymer with the products of reaction of the mixture of hydroxyethyl acrylate with octadecylvinyl ether-maleic anhydride copolymer.

Abstract: This invention describes an ionizing radiation sensitive material having high contrast, high sensitivity and comprised of a mixed half-ester or half amide of the reaction of an N-hydroxy or N-aminoalkyl amide and a hydroxy alkyl terminally unsaturated compound with an alkylvinyl ether-maleic anhydride copolymer. A typical material is made by reacting hydroxyethyl pyrrolidone and hydroxyethyl acrylate with octadecylvinyl ether-maleic anhydride copolymer.

Abstract: An improvement in the apparatus for the production of air laid fiberglass mat is provided. Fiberglass strands from bobbins, rovings or other sources are fed into a chopper assembly for chopping into smaller in length strands. The smaller in length strands then drop by gravity from the chopper assembly and are picked up by an air stream created by a fan or blower located below the chopper assembly. This air stream directs these smaller in length strands into the inlet of the fan or blower. In an alternative, already chopped strands could be fed directly into the inlet of the fan or blower eliminating the need for the chopper assembly. Fan or blower blades then work on these smaller in length fiberglass strands as they pass from the inlet to the exit of the fan or blower to open or fluff said smaller in length fiberglass strands into partially opened strands. The partially opened strands are then directed by the air stream caused by the air stream caused by the fan or blower through an expanding duct.

Abstract: Double faced rigid polyurethane foam insulating board in which the first facing is adhered directly to the urethane foam and in which a second facing is intermittently adhered to and spaced from the first facing by areas of adhesive spaced so as to allow unrestricted lateral venting of gases from between the facings to the edges of the board.

Abstract: Acrylic polymer latex thickened with a latex containing a copolymer derived from (1) methacrylic acid or ethacrylic acid, and (2) methylacrylate.

Abstract: The pattern of a room to be covered by a sheet vinyl or other sheet material is determined by using a roll of paper, which has pressure sensitive adhesive bands on both sides, each covered with a release paper. The paper is placed around the periphery of the room with a portion of the paper projecting up the wall. The paper is then affixed to the floor by removing the release paper from the adhesive on the underside of the paper, pressed into the intersections of the wall and floor and cut with a knife to conform to the periphery dimensions of the floor thereby creating a floor dimension pattern or template. The sheet vinyl or other sheet flooring material is then placed over the paper pattern or template in such a manner that it projects slightly up the wall. After it is laid out in this manner, the release paper is removed from the adhesive on the upper side of the paper pattern or template by picking up the sheet flooring from the paper pattern or template and pulling off the release strip.

Abstract: A process for multi-color valley printing and embossing of thermoplastic sheets and the like is provided wherein the number of colors that may be printed on such sheets simultaneously with the embossing operation exceeds the number of different color inks utilized by printing such inks individually in certain area and by blending two or more of the different color inks to print additional colors in other areas. A plurality of such different color inks are applied to the surface of a rotatable embossing and printing roll in a manner such that certain discrete surface areas thereof receive individual layers of a single color ink and other discrete surface areas thereof receive overlapping layers of at least two different color inks.