摘要:
An improved thickening composition for organic systems, including paints and coatings, is described. The additive provides paints and coatings more than adequate viscosity improvement without affecting intercoat adhesion characteristics.REEXAMINATION RESULTSThe questions raised in reexamination request no. 90/007130, filed Jul. 21, 2004, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U. S. C. 307 as provided in 37 CFR 1.570(e), for ex parte reexamination, or the reexamination certificate required by 35 U. S. C. 316 as provided in 37 CFR 1.997(e) for inter partes reexamination.
摘要:
An improved thickening composition for organic systems, including paints and coatings, is described. The additive provides paints and coatings more than adequate viscosity improvement without affecting intercoat adhesion characteristics.
摘要:
Printing inks have their performance improved by use of additives derived from rubber polyisoprenes “built-up” from rubber precursors or degraded using known techniques. A weight average molecular weight for the additives between 10,000-40,000 daltons has been found particularly effective and a loading between 1 and 10% optimum.
摘要:
A liquid, pourable rheological additive especially useful for thickening organic and solvent-based compositions which in one aspect comprises an alkoxylated nitrogen-containing compound, polycarboxylic acid, and a functional chain ending unit. The additive, which exists in a pourable, pumpable form at up to a 100% rheologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive operates by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems.
摘要:
A liquid, pourable 100% active rheological additive especially useful for thickening non-aqueous compositions is described. The additive, which exists in a pourable form at up to a 100% as a rheologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive may operate by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems.One important aspect of the present invention relates to a liquid rheological additive composition comprising a reaction product obtained from the reaction of:a) One or more active hydrogen compounds, wherein the active hydrogen compound contains at least two active hydrogen moieties; andb) One or more compounds containing at least two moieties which are capable of reacting with the active hydrogen moieties of (a), wherein the active hydrogen moieties of compound a) are in stoichiometric excess of the reactive moieties of compound b);and the reaction product has at least two active hydrogen moieties at its termini.
摘要:
This invention is of a drilling fluid composition containing a liquid thixotrope, which thixotrope is free of solvents or any other diluent, and is in easily usable, liquid form, pourable at ambient temperatures, and which provides effective and efficient rheological properties when used at low levels in such compositions. In a specific aspect, the invention provides an oil or oil invert emulsion drilling fluid composition containing one or more organoclays, and in addition contains a additive which comprises the reaction product of an alkoxylated nitrogen containing compound or a diamine, and one or more polycarboxylic acids in a specified equivalent ratio.
摘要:
A liquid, pourable 100% active rheological additive especially useful for thickening organic compositions which in one aspect comprises an active hydrogen containing compound such as a polyol, one or more polycarboxylic acids or isocynanates, and a functional chain ending unit. The additive, which exists in a pourable, pumpable form at up to a 100% as a rheologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive may operate by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems.
摘要:
A liquid, pourable rheological additive expecially useful for thickening liquid organic compositions which comprises the reaction product of a defined polyalkoxylated nitrogen-containing compound, polycarboxylic acid and a liquid diamine. The additive, which exists in a pourable, pumpable form at up to a 100% rheologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive operates by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems.