Abstract: This invention relates to novel N-cyano amide compositions and adducts thereof of the formula ##STR1## wherein R is a simple organic moiety or a polymeric adduct with the valence of n and n is 2 or 3. The composition, per se, can be used as a curing agent for epoxy resins to form a thermoset material on heating.

Abstract: This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising(1) an ethylenically unsaturated member of the group consisting of(a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is at least 2,(b) a polythiol in combination with (a) supra,(c) a polythiol in combination with a liquid ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR2## wherein R.sub.2 is H or CH.sub.3, R.sub.3 is an organic moiety and n is at least 2, and(d) mixtures of (a), (b) and (c),(2) a thermal initiator, and(3) an electrically conductive material.Heating of the composition in a desired pattern on a substrate results in a printed electric circuit.

Abstract: This invention relates to novel hydrophilic, crosslinked, polyurea-urethane, solid, discrete particles formed by adding in droplet form a hydrophilic prepolymer comprising an isocyanate-capped polyol or mixtures thereof wherein said polyol or mixture of polyols has a reaction functionality greater than two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent, before capping to a large excess of a stirred aqueous reactant. The resultant solid particles can be molded into various shapes as desired or used for coating or adhesive applications.

Abstract: A prepolymer having a molecular weight of at least 3,000 is made from a polyether polyol where all the OH groups are capped with an aliphatic polyisocyanate. When mixed with water the prepolymer reacts to form an elastomeric cross-linked polyurethane gel adhesive which can be used to adhere fibers to from a nonwoven fabric. Examples of the aliphatic diisocyanate are IPDI (isophorone diisocyanate) and hydrogenated MDI. A catalyst can also be applied to the aqueous mixture to accelerate the adhesive binder formation.

Abstract: High molecular weight protonated latices stable typically up to pH of about 10 are cathodically electrodeposited onto electroconductive substrates, forming uniform, flexible coatings without the need of subsequent heat curing.

Abstract: This invention is directed to latent thermal curing agents for epoxy resins comprising cyanourea compounds of the formula: ##STR1## wherein R is the organic moiety of a mono- or poly-isocyanate remaining after reaction of the isocyanate group or groups to form cyanourea groups and n is 1 or more, preferably 1 to 2. The epoxy-curing agent system is stable at room temperature and cures at temperatures above 100.degree. C. to form a crosslinked, solid material suitable as an adhesive, sealant or coating. The polymeric form polymerized from dicyanourea compound can be dissolved in a solvent and admixed with an epoxy resin to form a thermoset adhesive, sealant or coating on heating above 100.degree. C. The polymeric form from the combination of cyanourea and dicyanourea or dicyanourea per se dissolving in epoxy resin also forms a thermosetting adhesive, sealant or coating on heating above 100.degree. C.

Abstract: An MDI based polyurethane foam having cellulose foam properties is produced by mixing together an aqueous phase which can optionally contain reinforcing fibers and surfactants and a resin phase comprising a prepolymer derived from a poly(oxy C.sub.2-4 alkylene)diol, an MDI containing isocyanate product having a functionality greater than 2.0 made of a mixture of MDI and isocyanate containing derivatives of MDI, and a monomeric polyol cross-linking agent having 3 or 4 hydroxyl equivalents per mole. The preferred polyol is trimethylolpropane and the preferred diol is Carbowax 1000. The diol and the polyol, such as trimethylolpropane, are present in a mole ratio in the range of 4:1 to 8:1 while the ratio of the isocyanate equivalents to the total hydroxyl equivalents is in the range of 3:1 to 4:1. The isocyanate containing product comprises more than 50% by weight of the prepolymer and Isonate 143L is the preferred isocyanate product. The foam has a minimal swell when wet and it does not curl upon drying.

Abstract: This invention relates to a heat curable composition comprising(a) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is at least 2,(b) an epoxy resin containing at least two ##STR2## groups, and (c) a thermal initiator member of the group consisting of(1) a substituted or unsubstituted diaryliodonium salt in combination with a free radical initiator,(2) a BF.sub.3 adduct,(3) a BF.sub.3 adduct in combination with a free radical initiator, and(4) dicyandiamide in combination with a free radical initiator.The system is stable at ordinary temperatures, but on heating the thermal initiator catalyzes the curing of the acrylate and the epoxy resin.

Abstract: Underground coal is mined by sinking a hole into the coal, passing a coal solvent to the coal, and recovering a coal solution and/or dispersion products from the resulting solution or suspension.

Abstract: A sound deadening material is obtained with a very high loading of sound damping materials such as barium sulfate, calcium carbonate or metal powders. These materials are mixed with water and are bound together by adding a water-miscible isocyanate-terminated prepolymer which reacts with the water to form a cross-linked binder.

Abstract: The Hill process for control of post-precipitation in wet process phosphoric acid can be made to work on low-iron phosphate rock, without the need of added perlite or other aluminum silicate.

Abstract: Flexible polyurethane foams are made from isocyanate containing prepolymers where the isocyanate is a mixture of diphenylmethane diisocyanate (MDI) and polymeric forms of MDI. The isocyanate mixture has a functionality greater than 2.0. The prepolymer is an isocyanate capped polyol or mixture of polyols where the polyols are diols or triols having at least 50% by weight oxyethylene groups. The foams are made by reacting water with the prepolymer and fire retardant materials can be added to the reaction mixture to produce fire retardant foams. The foams have improved physical properties and flammability resistance.

Abstract: A drying chamber for water laden foams supports the foam structure on a porous support and warm air is forced through the foam to dry it. An air impervious mask on the porous support around the object insures that all the air only flows through the object. Multiple objects can also be dried and loaded outside the drying chamber.

Abstract: A method of synthesizing mercaptoacetonitrile which comprises reacting chloroacetonitrile with aqueous sodium hydrosulfide.

Abstract: This invention is diected to dual UV and heat activated compositions comprising(1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is 2 to 4, hereinafter referred to as the ethylenically unsaturated compound,(2) a photoinitiator, and(3) a substituted or unsubstituted pinacol.The exposure to UV radiation and heat in seriatim or simultaneously results in a cured solid product which can be utilized as coatings, gaskets, sealants, resists and the like.

Abstract: A stream of gas, e.g., natural gas to e.g., a reforming operation, is divided, and the two streams are interacted so as to lower the pressure and raise the temperature of one while doing the reverse to the other.

Abstract: This invention relates to a heat curing process and to heat activated compositions comprising(1) an ethylenically unsaturated compound containing at least two carbon-to-carbon double bonds and(2) a thiuram.

Abstract: This invention relates to hydrophilic, odorant-containing foam compositions having improved release ability of the odorant abetted by incorporating the odorant into a non-volatile, water insoluble oil or wax medium which is added to an aqueous reactant prior to reacting the aqueous reactant with a hydrophilic, isocyanate-terminated prepolymer to form a polyurethane foam.

Abstract: The invention disclosed is for novel polyols and a method of making said polyols which comprises interconnecting polyols with epihalohydrin in the presence of substantially an equimolar amount of base based on the epihalohydrin thereby forming an extended polyol with terminal hydroxyl groups and at least one hydroxyl group attached directly to the backbone chain internally. These resultant polyols can be used to make polyurethane foams having high resiliency.

Abstract: This invention relates to control of particle size of solid, discrete, hydrophilic, crosslinked polyurethane particles formed from a composition which comprises(a) a water reactant;(b) a prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality of at least two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping;(c) a water-soluble solvent for (b) and(d) when the reaction functionality of (b) is two, a crosslinking agent containing at least three functional groups, the volume ratio of (a):(b) being at least 2:1.