Abstract:
The present invention generally relates to the formation of organic gels by dissolving organic gelling agents in organic solvents. The aryl cyclohexanol gelling agents employed in this invention are not structurally related to previously known gellation agents and they exhibit potent gellation activity, for example, from 0.2 - 5 %, by weight, of gelling agent, which is able to immobilize a variety of organic solvents. The gels formed range from optically transparent to slightly translucent, and complete fluidity can be restored by either increasing the temperature (reversible) or by chemical treatment (irreversible).
Abstract:
A method of preparing a fountain solution, a system for blending two or more concentrate components of a fountain solution, concentrate compositions, and articles of manufacture or kits comprising the concentrate compositions are provided. The method comprises combining at least two fluid concentrates that comprise the components of the fountain solution at effective proportions with water to produce the fountain solution composition containing a predetermined concentration of ingredients. In one embodiment, the method comprises combining an acidic film-forming polymer concentrate and a surface tension reducing (wetting) concentrate with water to form the fountain solution. The method preferably utilizes a proportioning pump for metering amounts of the component concentrates of the fountain solution into a water flow.
Abstract:
The present invention also relates to chemical compositions comprising the neutralization product of at least one amine neutralization compound (preferably, a diamine) and a carboxylic acid (preferably, a dicarboxylic acid), said amine neutralization compound comprising about 1 % to about 100 % by weight (of the total amount of amine neutralization containing compound) of a first amine compound and 0 % to about 99 % by weight of a second amine compound different from said first amine compound, said first amine compound being a polyamine containing at least one tertiary amine group and at least one quaternary amine group, said tertiary amine group of said first amine reacting with said carboxylic acid group to produce a tertiary ammonium carboxylate salt, said second amine compound containing at least one primary, secondary or tertiary amine group with the proviso that when said second amine contains only primary and/or secondary amine groups, the amount of said second amine in said amine neutralization compound is no greater than about 20 % (preferably, no greater than about 10 %) by weight and said carboxylic acid comprises at least about 50 % by weight (more preferably at least about 75 % by weight, even more preferably about 90 % by weight and even more preferably about 100 % by weight of a polycarboxylic acid, more preferably a dicarboxylic acid.
Abstract:
The present invention relates to a method and compositions to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one fluorosurfactant to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one fluorosurfactant to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the bacteria fouling organisms. The fluorosurfactant used in the method of the invention is an anionic or nonionic fluorosurfactant selected from: RfCH2CH2SCH2CH2CO2Li, (RfCH2CH2O)P(O)(ONH4)2, (RfCH2CH2O)2P(O)(ONH4), (RfCH2CH2O)P(O)(OH)2, (RfCH2CH2O)2P(O)(OH), RfCH2CH2O(CH2CH2O)xH, RfCH2CH2O(CH2CH2O)yH, RfCH2CH2SO3H, or mixtures thereof. The group Rf is F(CF2CF2)3-8, X varies from 2-20, and y varies from 2-20.
Abstract:
The present invention is directed to an oil-free, water-soluble, liquid, polymer dispersion for use in thickening aqueous mediums, particularly completion and workover fluids used in the oil and gas drilling business. The dispersions of the present invention are comprised of hydroxyethyl cellulose and propylene glycol derivatives, preferably both propylene glycol polyether polyols and an aliphatic propylene glycol ether. Optionally these dispersions include water. Because of their low toxicity, these dispersions are particularly useful for drilling in offshore environments. These compositions rapidly disperse in and viscosify a variety of brines, including sea water and other light brines, with minimum shear and without fisheye formation.
Abstract:
An emulsifying composition containing 10-40 wt.% of an alkylpolyglycoside mixture and 90-60 wt.% of one or more fatty alcohols of formula R'OH, wherein R' is a saturated or unsaturated alkyl radical with 12-18 carbon atoms, the alkylpolyglycoside mixture including: (i) one or more alkylpolyglycosides of formula (I): R1O(G1)X1, wherein R1 is a saturated or unsaturated alkyl radical with 12-14 carbon atoms, G1 is a sugar residue, X1 is 1-5; (ii) an alkylpolyglycoside of formula (II): R2O(G2)X2, wherein R2 is a saturated or unsaturated alkyl radical with 16 carbon atoms, G2 is a sugar residue, X2 is 1-5; (iii) an alkylpolyglycoside of formula (III): R3O(G3)X3, wherein R3 is a saturated or unsaturated alkyl radical with 18 carbon atoms, G3 is a sugar residue and X3 is 1-5, the weight ratio of alkylpolyglycosides of formula (I) to alkylpolyglycosides of formulae (II) and (III) being in the range of 0.4-5. The use of said emulsifying composition as a self-emulsifiable agent for preparing an emulsion is further described.