Abstract: Polymer compositions which are highly absorbent to aqueous electrolyte solutions are prepared by copolymerization of an ampholytic monomer having the formula of ##STR1## where one and only one of the substituted groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 must be a vinyl group, the rest can be the same or different and can be hydrogen or a C.sub.1 -C.sub.3 alkyl group; R.sub.5 is a phenyl group; n is .gtoreq.1 and .ltoreq.6; and q is 0 or 1; and an olefin monomer having an ethylenic structure as well as by graft copolymerization of at least an olefin monomer having an ethylenic structure and an ampholytic monomer having the formula disclosed above onto a main polymer selected from the group consisting of polysacchardies and polyolefins. Also disclosed is a process for absorbing large quantity of aqueous electrolyte solution employing the polymer compositions.

Abstract: A composition of a superabsorbent polymer and a process for using the polymer to absorb an aqueous electrolyte solution are disclosed.

Abstract: The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: In the adhesion of metallic materials to polymers, new adhesive agents of nitrogen containing hetrocyclic polymers such as compositions of imidazole-pyrridine, pyrrolidone-pyridine, and imidazole-pyrrolidone solutions have been discovered as useful. These agents also exhibit anti-corrosion effects. Adhesion and/or reduction of anti-corrosion can be accomplished by pre-coating the metal material with at least one of these agents prior to applying the polymer, or by preblending the polymer with at least one of these agents followed by applying the blend to the metal, under suitable conditions.

Abstract: A process is provided comprising contacting a hydrocarbyl alkali metal compound with a nitrogen-containing compound in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin is present during said contacting.In another embodiment a process is provided comprising: (a) contacting a hydrocarbyl alkali metal compound with a nitrogen-containing compound in the presence of propylene; and thereafter (b) recovering an allyl/alkali metal/nitrogen complex; and thereafter (c) contacting said allyl/alkali metal/nitrogen complex with at least one alpha-olefin. Optionally, a catalytic support is present during steps a, b, and c.

Abstract: Polymer compositions which are highly absorbent to aqueous electrolyte solutions are prepared by copolymerization of an ampholytic monomer having the formula of ##STR1## where one and only one of the substituted groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 must be a vinyl group, the rest can be the same or different and can be hydrogen or a C.sub.1 -C.sub.3 alkyl group; R.sub.5 is a phenyl group; n is .gtoreq.1 and .ltoreq.6; and q is 0 or 1; and an olefin monomer having an ethylenic structure as well as by graft copolymerization of at least an olefin monomer having an ethylenic structure and an ampholytic monomer having the formula disclosed above onto a main polymer selected from the group consisting of polysacchardies and polyolefins. Also disclosed is a process for absorbing large quantity of aqueous electrolyte solution employing the polymer compositions.

Abstract: The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: A process is provided comprising contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin is present during said contacting.In another embodiment a process is provided comprising: (a) contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of propylene; and thereafter (b) recovering an allyl alkali metal compound; and thereafter (c) contacting said allyl alkali metal compound with at least one alpha-olefin. Optionally, a catalytic support is also used during steps a, b, and c.

Abstract: The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: Water-soluble polymers comprising N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or hydrophilic N-vinyl lactam for applications under hostile conditions.

Abstract: An olefin polymerization catalyst is prepared from titanium tetrachloride and an organolithium compound wherein the gram atom ratio of lithium to titanium is in the range of about 20/1 to about 50/1 or from a rare earth metal halide, an organolithium compound and a transition metal compound selected from dicyclopentadienyl zirconium dichloride and TiX4 wherein each X is individually selected from halogen, alkyl, alkoxy and aryl radicals.

Abstract: The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: The present invention provides an article of manufacture which contains a crosslinked ampolytic copolymer that is highly absorbent to aqueous electrolyte solutions.

Abstract: High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50. In another catalyst system the organo lithium compound is combined with a rare earth metal halide. For best results these catalyst systems are employed at pressures of at least about 100 psi. In ethylene polymerization an ethylene partial pressure of at least about 100 psi is preferred.

Abstract: A process for polymerizing olefins is disclosed which makes use of a catalyst comprising a cyclopentadienyl lanthanide halide alkali metal ether complex in combination with a cocatalyst comprising an alkali or alkaline earth metal alkyl. Preferred embodiments include the use of hydrogen during the polymerization or the use of an organoaluminum hydride as an additional cocatalyst.

Abstract: High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50. In another catalyst system the organo lithium compound is combined with a rare earth metal halide. For best results these catalyst systems are employed at pressures of at least about 100 psi. In ethylene polymerization an ethylene partial pressure of at least about 100 psi is preferred.

Abstract: The present invention provides crosslinked ampolytic copolymers that are highly absorbent to aqueous electrolyte solutions.