Abstract: High quality, aqueous-based, heat-curable, primer coating compositions substantially free of organic solvents are disclosed. Said primer compositions include (a) from about 30% to about 75% by weight of a resinous binder which is a mixture of (i) from about 10% to about 60% by weight of finely divided epoxy resin, including blends thereof, having a weight average molecular weight of from about 900 to about 8000 and an epoxide equivalent weight of from about 450 to about 4000, and (ii) from about 5% to about 30% by weight of dispersible, methylated methoxymethyl urea resin which is a crosslinking agent having a formaldehyde:urea molar ratio of 2.2-2.8:1, methanol:urea molar ratio of 1.3-2.0:1, and toluene tolerance of at least 50 weight percent, (b) from about 25% to about 70% by weight of water, and, if desired, (c) up to about 30% by weight of pigment, including a combination of pigments.

Abstract: A porous bacteria filter medium of reduced binder content is provided in flexible fibrous sheet form comprised of micron-diameter glass fibers and less than about 30 percent by weight of a polyolefin heat sealable binder fiber randomly dispersed throughout the sheet and fused therein. This filter medium has a bacteria filtration efficiency of at least 96 percent and a porosity in excess of 25 cfm at only two thirds the weight resulting in breathability within comfortable limits over prolonged periods of time. The polyolefin fibers used in the sheet exhibit a surface area greater than 25 square meters per gram and are formed of polymeric material having a molecular weight of 500,000 and a melt index less than 0.5.

Abstract: A continuous, essentially closed recirculating papermaking process is provided by using a dispersing medium of adjustable viscosity. The process permits the continuous reuse of the medium under preferred operating conditions. It includes the steps of forming a dispersion of fibers within the adjustable medium containing a pH sensitive viscosity producing agent, reducing the fiber consistency and the viscosity within the dispersion while maintaining the concentration of the agent substantially unchanged, subsequently forming a fibrous web material on a papermaking screen from said dispersion of reduced fiber consistency while separating the dispersing media from the fibers forming the web and continuously collecting the separated media and recirculating it within the system to effect a subsequent fiber dispersion as well as a fiber consistency reduction and viscosity reduction without substantially changing the concentration of the viscosity producing agent.

Abstract: Aluminum and tinplate steel cookware is coated with a finely divided fluorocarbon polymer dispersed in a silanol-containing organopolysiloxane resin to provide a release coating which may be cured at temperatures which do not interfere with the metallurgical properties of the aluminum or the tinplate steel cookware.

Abstract: The present invention relates to a glass bottle coated with a multi-layer protective film comprising high polymer substances, and a method for producing such a coated glass bottle. More particularly, the invention is concerned with a glass bottle designed for containing carbonated beverages such as soft drinks or beer, wherein the beverages must be maintained under pressurized conditions, said bottle being coated on its outer wall by spraying or otherwise applying a plurality of protective films. Still more particularly, the present invention is directed to a "return-type" glass bottle for carbonated beverages such as soft drinks and beer, wherein the glass bottles are designed for repeated use, each cycle of which requires washing and sterilizing steps prior to filling.

Abstract: A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to removal from the element. The tufted nonwoven fibrous web exhibits inwardly turned, spirally consolidated and entangled individual tuft head portions and substantially aligned and untwisted root portions interconnecting the head portion to the undisturbed planar main body of the web material.

Abstract: A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber-collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to removal from the element. The apertured element is adapted not only to form the tufted nonwoven fibrous web but also to permit consolidation of individual tufts and facilitate the formation of tufted webs from 100 percent wood pulp. Additionally, webs having tufts on both planar surfaces also can be formed by this technique.