Abstract: An orientable frac ball for substantially sealing a subterranean formation. Desired orientation can be accomplished by altering the geometry of the ball with one or more features that can be molded with or added to the ball. A projection of any shape on a ball with a length plus ball diameter that is greater than the inner diameter of the well bore will prevent the ball from orienting in an undesired position on the seat. This projection can be made of various materials that break or disintegrate when desired to remove the ball from the well bore. During the pump back process in which the balls will need to move through the progressively larger sealing seats, the projection should not hinder the removal process. It will break away or off the ball during this process. Break up features can easily be added to these tail sections. These balls can be dropped with the tail down or tail up. Alternatively, a magnet placed in the frac ball can orient the ball on a metal seat by magnetic attraction.

Abstract: This invention relates to a process for making a thickened thermoset resin composition, comprising: mixing(A) a carboxylic acid containing thermoset resin composition; and(B) at least one compound represented by the formula ##STR1## wherein in Formula (B-I): R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or methyl; R.sup.5 is hydrogen, a hydrocarbon group or a substituted hydrocarbon group, the substituents on said substituted hydrocarbon group comprising oxygen and/or nitrogen; and n is at least 1.

Abstract: This invention relates to low pressure sheet molding compounds and, more particularly, to a composition that is moldable at pressures below about 100 psi, said composition being made by combining: (A) an unsaturated prepolymer resin; (B) a monomeric unsaturated polymerizable material containing a terminal ethylene group; (C) a hydroxy-terminated polyester having a molecular weight in the range of about 500 to about 3000; (D) a polyisocyanate; and (E) a polymerization initiator; the mole ratio of NCO groups from (D) to OH groups from (C) being in the range of about 0.1 to about 10.

Abstract: This invention relates to a process for making a thickened thermoset resin composition, comprising: mixing(A) a carboxylic acid containing thermoset resin composition; and(B) at least one compound represented by the formula ##STR1## wherein in Formula (B-I): R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or methyl; R.sup.5 is hydrogen, a hydrocarbon group or a substituted hydrocarbon group, the substituents on said substituted hydrocarbon group comprising oxygen and/or nitrogen; and n is at least 1.

Abstract: This invention relates to low pressure sheet molding compounds and, more particularly, to a composition that is moldable at pressures below about 100 psi, said composition being made by combining: (A) an unsaturated prepolymer resin; (B) a monomeric unsaturated polymerizable material containing a terminal ethylene group; (C) a hydroxy-terminated polyester having a molecular weight in the range of about 500 to about 3000; (D) a polyisocyanate; and (E) a polymerization initiator; the mole ratio of NCO groups from (D) to OH groups from (C) being in the range of about 0.1 to about 10.

Abstract: A method of preparing curable solid polyester resin pellets and powders comprising(a) preparing a liquid mixture consisting essentially of an unsaturated polyester resin, at least one monomeric unsaturated polymerizable material containing a terminal ethylene group, and an alkaline earth metal oxide or hydroxide in an amount effective to provide a desired increase in viscosity,(b) allowing the liquid mixture to stand until the alkaline earth metal oxide or hydroxide and the polyester co-react, and a desired increase in viscosity has been attained,(c) dispersing in the mixture obtained in (b), a polymerization initiator and a filler, fibrous reinforcing material, pigment or mold release agent, or mixtures thereof,(d) extruding the mixture obtained in (c) to form dry, free-flowing pellets or powdersis described. The pellets and powders prepared in this manner are specifically suitable for molding techniques such as injection, compression or transfer molding operations.

Abstract: An airfoil or deflector panel for being mounted ahead of the rearmost set of wheels of a vehicle such as a truck or tractor-drawn trailer to direct air flow in a manner which reduces the relatively negative air pressure normally occurring behind a moving vehicle. The surface of the deflector which is presented in the direction of vehicle motion has a bilateral or compound convex curve.