Abstract: The present invention is a nucleated, metallocene catalyzed polypropylene homopolymer with an MFR less than 100 g/10 min, or desirably less than 21 g/10 min, the polypropylene useful in making casting cups and other such articles where a high degree of precision and accuracy in the casting is desirable, such as in contact lens casting cups.

Abstract: Provided are articles such as packaging materials and medical devices having enhanced tolerance to radiation and heat, produced from a blend of from about 99% to about 50% by weight homo or copolymerized polypropylene and about 1% to about 50% by weight polyethylene produced by single-site catalysis, such polyethylene having a MWD between about 1 and about 4, and a CDBI greater than about 45%. Optionally, other blend components may be added, such as hindered amine stabilizers, secondary antioxidants, clarifying nucleators and secondary antioxidants. Also provided are processes for producing such articles.

Abstract: Low molecular weight copolymers of acrylic acid and salts of vinylsulfonic acid are superior dispersants and high temperature deflocculants for the stabilization of the rheological properties of aqueous claybased drilling fluids subjected to high levels of calcium ion contamination.

Abstract: An aqueous slurry which comprises (a) a cement; (b) about 0.05 to 5.0 wt. % of a copolymer of N-vinylpyrrolidone and a salt of styrenesulfonic acid based on the dry weight of said cement; (c) about 0.05 to 5.0 wt. % of a formaldehyde condensed naphthalene-sulfonic acid salt based on the dry weight of said cement; and (d) water, said cement, said copolymer and said dispersant being dispersed in said water to form said aqueous slurry.

Abstract: A formulation suitable for preparation of a spotting pill effective in the release of stuck pipe in a borehole during a drilling operation which formulation contains a mono and/or poly alkylene glycol ether and viscosified sufficiently to make the formulation compatible with a solids weighting material such as barite.

Abstract: Thiadiazinones, such as 3-chloro-5-phenylthio-4H-1,2,6-thiadiazin-4-one, useful for control of certain fungus plant diseases such as scab of apple, late blight of tomato and downy mildew of grape.

Abstract: The present invention relates to materials which reduce the filtration of fluid into permeable earth formations during cementing processes in the drilling and completing of subterranean wells, particularly wells for the recovery of petroleum resources.Petroleum well cementing is the process of mixing a slurry of cement, water, and other additives and pumping it down through steel casing to critical points in the oil well annulus around the casing or in the open hole below the casing string. The primary functions of the cementing process are to restrict fluid movement between geological formations and to bond and support the casing. In addition the cement aids in protecting the casing from corrosion, preventing blowouts by quickly sealing formations, protecting the casing from shock loads in drilling deeper wells, and sealing off lost circulation or thief zones.A common problem in petroleum well cementing is the flow of liquid from the cement slurry into porous earth formations in contact with the cement.

Abstract: A bis-oxazoline of the formula: ##STR1## wherein R represents an alkyl group of 6 to 50 carbons and X is selected from the group containing of an alkyl or hydroxyalkyl group and at least one of the X substituents being a hydroxy alkyl group of the structure --(CH.sub.2).sub.n OH where n is 1 to 3, which is useful in improving the lubricity of aqueous drilling muds.

Abstract: Aqueous drilling muds are improved in lubricity by the presence of at least an effective amount of an oxazoline of a C.sub.6 to C.sub.50 2-(alkylthio)succinic acid or anhydride.

Abstract: A method for inhibiting acid corrosion of metal well equipment which comprises introducing into an aqueous acid solution an inhibiting amount of a quaternary compound prepared by reacting a tertiary aromatic heterocyclic amine with a (halo-substituted-aryl) alkyl halide, and contacting the well equipment with the inhibited aqueous acid solution.