Abstract: A polymer suitable for use as a solder mask comprised of an acrylated or methacrylated polyurethane having terminal alkene unsaturation at each end has been synthesized. This polymer can be a liquid or a hot melt and when in a photopolymerizable composition it is suitable for roller coating or screen printing onto a printed circuit board substrate.

Abstract: Stable vermiculite dispersions which are substantially free of settling and a method of preparing same are provided. The dispersions are obtained by treating the vermiculite platelets of which the dispersion is comprised with citrate anion. The citrate anion functions as a swelling agent for the vermiculite and enhances the rate and extent of swelling in an aqueous medium. The swollen vermiculite is delaminated by shearing to provide the inventive dispersions, which comprise a suspension of the delaminated platelets and citrate anion.

Abstract: The present invention is directed to a foamed product having a substantially closed cellular configuration. The foamed product is formed from a blend of asphalt with a polyvalent metal salt of anionic group containing polymers. The resultant foam product exhibits low bulk densities and pore volumes of about 85 percent or greater.

Abstract: Pressure sensitive bitumen-based adhesive compositions are provided which comprise bitumen, oil, an ionomeric elastomer, and gilsonite. The adhesives are particularly useful as self adherent waterproofing layers in roofing. The presence of gilsonite can result in substantial increases in the shear strength of these adhesives at the relatively high temperatures encountered in roofing applications.Also provided are waterproofing membranes comprising the inventive adhesive compositions.

Abstract: Bitumen-based pressure sensitive adhesive compositions are provided which comprise bitumen, oil, and an ionomeric elastomer. The adhesive compositions are useful as self adherent waterproofing layers, particularly in roofing applications. The use of the ionomeric elastomer permits formulation of the adhesive to have improved tack at the lower temperatures encountered in such application while maintaining desired flexibility, shear strength, and flow resistance.Also provided are waterproofing membranes comprising the inventive adhesive compositions.

Abstract: Ionomeric polymer compositions are provided which comprise an ionomeric polymer and about 5 to about 125 parts by weight of gilsonite, per 100 parts by weight of the ionomeric polymer. The inventive compositions can be formulated as processable materials which can be fabricated into articles such as sheets, tubes, and films having improved tear propagation resistance and fire retardance and decreased levels of water absorption.

Abstract: Waterproofing membranes are disclosed comprising a shrinkable polymer film bonded to a foil layer by a layer of thermoplastic adhesive having sufficient bonding strength below the shrinkage onset temperature of the polymer film to inhibit relative movement between the film and the foil and having sufficient plasticity above the shrinkage onset temperature of the polymer film to permit relative movement between the film and the foil. In a preferred embodiment, the membrane is made self adhesive by including a layer of an adhesive material on that surface of the foil opposite the layer of the thermoplastic adhesive.

Abstract: An improved compressible printing plate in which a liquid photocurable material is bonded directly to a compressible material during exposure to ultraviolet radiation. The compressible printing plate is free of any dimensionally stable material between the liquid photocurable material and the compressible material.

Abstract: The present invention is directed to a foamed product having a substantially closed cellular configuration. The foamed product is formed from a blend of asphalt with a polyvalent metal salt of anionic group containing polymers. The resultant foam product exhibits low bulk densities and pore volumes of about 85 percent or greater.

Abstract: A method for accurate, on site heat flow measurement through a substrate surface using surface mounted heat flow sensors and an apparatus for on site calibration of surface mounted heat flow sensors are presented. The method comprises mounting on the substrate surface a heat flow sensor which is calibrated to establish the relationship between heat flow through the surface and the resultant induced voltage in the sensor under the convective and radiative heat transfer environmental conditions of the surface, measuring the voltage output induced in the sensor by heat flow through the surface, and converting the voltage output to a quantitative heat flow on the basis of the calibration of the sensor. The apparatus of the invention permits the calibration of the sensors under convective and radiative heat transfer environmental conditions which substantially duplicate those of the experimental substrate.

Abstract: Admixture compositions for hydraulic cement compositions are disclosed which comprise a borate ester of a polyhydroxy compound. The admixtures are effective water-reducing agents at relatively low dosages in hydraulic cements. They generally provide water reduction levels equal to or greater than those provided by the corresponding non-esterified polyhydroxy compound with a lesser degree of set retardation.

Abstract: A method of providing cured latex-based compositions is disclosed which permits in situ curing of latexes disposed in plastic container closures or other heat sensitive receptacles without adverse effect on the closure or receptacle. The method comprises heating a fluid latex composition to gel the latex and effect removal of at least a portion of the water initially contained therein and subjecting the resultant composition to modulated microwave energy to effect curing thereof. Modulation of the microwave energy is achieved by applying same in an intermittent or pulsed fashion. The method is of particular interest for the in situ formation of cured latex-based gaskets in polyalkylene container closures.

Abstract: The present invention is directed to improved fasteners for securing insulation to a supporting structure, to a method of using the fasteners, and to combination wall structures obtained by such use. The fasteners are adapted to facilitate the securement of relatively thick insulation to a supporting structure, particularly where the supporting structure consists of a relatively hard material, such as aged concrete of high compressive strength.

Abstract: An insulating material in the form of a body comprising expanded plastics beads which are each encapsulated in bitumen or a bituminous compound which is free from solvents, light oils, emulsifiers or other liquifying agents, such encapsulation having been formed by a hot process, the encapsulated beads having been subsequently pressed together and distorted to form a body with voids between the beads substantially eliminated.

Abstract: The present invention is directed to a foamed product having a substantially closed cellular configuration. The foamed product is formed from a blend of asphalt with a polyvalent metal salt of anionic group containing polymers. The resultant foam product exhibits low bulk densities and pore volumes of about 85 percent or greater.

Abstract: A method of providing cured latex-based compositions is disclosed which permits in situ curing of latexes disposed in plastic container closures or other heat sensitive receptacles without adverse effect on the closure or receptacle. The method comprises heating a fluid latex composition to gel the latex and effect removal of at least a portion of the water initially contained therein and subjecting the resultant composition to modulated microwave energy to effect curing thereof. Modulation of the microwave energy is achieved by applying same in an intermittent or pulsed fashion. The method is of particular interest for the in situ formation of cured latex-based gaskets in polyalkylene container closures.

Abstract: Grinding aid for grinding pretreated or untreated minerals and mixtures of minerals, such as cement, characterized in that it consists of 1,1-dimethylol propane. Distillation first runnings from trimethylol propane production containing 1,1-dimethylol propane as the main constituent are particularly suitable. The grinding aid according to the invention leads to a considerable improvement to the flowability or fluidity of the ground material, i.e. pack-setting or compaction thereof is prevented.

Abstract: Additive compositions for Portland cement compositions are disclosed which provide the corrosion inhibition of calcium nitrite without the corresponding set acceleration. The additive compositions are stable, single phase aqueous solutions consisting essentially of water and, as solutes, a major amount by weight of calcium nitrite and a minor amount by weight of corn syrup, a hydroxycarboxylic acid, or an alkali metal or alkaline earth metal salt of a hydroxycarboxylic acid.

Abstract: A dispensing device for mixing and dispensing multi-component liquid mixtures is described. The dispensing device comprises valve assemblies including a tapered valve plug and a correspondingly tapered valve seat and, downstream from the valve assemblies, respective orifices which provide access to a mixing and dispensing nozzle. The cross-sectional area of the orifices is about 1.7.times.10.sup.-4 to 2.0.times.10.sup.-3 sq. in. and the ratio of the cross-sectional area of the valve opening at any level of operation to the cross-sectional area of its respective downstream orifice is less than about 3.0. The device generally is configured as a dispensing "gun" and provides a capability for controlled variation in the flow rate of the liquid components and mixing of the components at a consistent volume ratio.

Abstract: A method is disclosed for increasing the volume yield of expanded vermiculite obtained by exfoliation of vermiculite ore particles. The method comprises the sequential steps of applying vegetable oil to the vermiculite ore particles and thermally exfoliating the vermiculite ore particles.