Abstract: The invention provides methods and compositions for increasing the strength of a paper sheet. The method involves adding to the paper sheet an amine containing polymer. The amine containing polymer interacts with materials such as GPAM or starch to make the paper stronger in terms including tensile strength, surface strength and bulk strength.

Abstract: The invention provides methods and compositions for increasing the strength of a paper sheet. The method involves adding to the paper sheet an amine containing polymer. The amine containing polymer interacts with materials such as GPAM or starch to make the paper stronger in terms including tensile strength, surface strength and bulk strength.

Abstract: Described herein are methods of reducing the deposition of organic contaminants, such as pitch and stickies, in papermaking processes.

Abstract: Described herein are methods of reducing the deposition of organic contaminants, such as pitch and stickies, in papermaking processes.

Abstract: Disclosed are efficient and scalable processes for preparing 1,2,4- and 1,3,4-oxadiazole carboxylates from readily available starting materials.

Abstract: Disclosed are 4-(difluoromethylene)phosphonate cinnamic acid derivatives as a molecular scaffold for the preparation of protein tyrosine phosphatase inhibitors. The invention also relates to a process for the combinatorial preparation of protein tyrosine phospatase inhibitors possessing a 4-(difluoromethylene)phosphonate cinnamic acid/ester molecular scaffold.

Abstract: Disclosed is a safe, efficient and environmentally friendly method for preparing imidoesters.

Abstract: Disclosed are efficient and scalable processes for preparing 1,2,4- and 1,3,4-oxadiazole carboxylates from readily available starting materials.

Abstract: Disclosed is a one step method for preparing a 1,2,3-triazole carboxylic acid by treating an azide with a &bgr;-ketoester in the presence of a base.

Abstract: Disclosed is a safe, efficient and environmentally friendly method for preparing imidoesters.

Abstract: Disclosed is an efficient, inexpensive method for the preparation of chiral aziridines on a large scale.

Abstract: Disclosed is a one step method for preparing a 1,2,3-triazole carboxylic acid by treating an azide with a &bgr;-ketoester in the presence of a base.

Abstract: An antimicrobial composition comprising the formula ##STR1## wherein R is an alkyl group having a distribution of carbon atoms from about eight to eighteen carbon atoms and wherein from about 40 to 60 weight % of the alkyl group having about twelve carbon atoms and wherein X is hydrogen or a halide is disclosed. The antimicrobial composition is storage stable below about 5.degree. C. and, further, preferably, also has a flash point above about 38.degree. C. A process for making this antimicrobial composition is disclosed resulting in an antimicrobial composition comprising from about 25 to 35 weight % of the alkyl guanidine halide salt of the above formula, from about 10 to 60 weight % of a solvent and from about 10 to 65 weight % water.

Abstract: A method for controlling, inhibiting the deposition of and/or for removing stickies from the surfaces of pulping and papermaking machinery in secondary fiber operations by adding an effective amount of a melamine formaldehyde-type polymer to a pulp slurry or furnish containing secondary fiber that is in contact with said machinery. Improved paper end products resulting from this method are also disclosed.

Abstract: A method for inhibiting the deposition of pitch on and/or for removing pitch from the surfaces of pulping and papermaking machinery by adding an effective amount of a melamine formaldehyde-type polymer to a pulp slurry or furnish in contact with said machinery.

Abstract: An aqueous slurry of comprising a plurality of synthetic fibers and from 0.1-10 percent by weight based on the weight of the fibers of a water-soluble acrylamide polymer dispersant containg at least 5 percent by weight of 2-acrylamido-2-methylpropanesulfonic acid units, said polymer having an RSV of at least 10.

Abstract: A process of flocculating suspended solids which comprises treating such suspension with an effective amount of a flocculant comprising a water-soluble terpolymer which contains sulfonate groups and has an RSV of at least 15.

Abstract: An improved method of dewatering mineral slurries which comprises treating said slurries with a dewatering amount of a copolymer of acrylamide and DADMAC, which polymers are characterized as containing from 3-50 mole percent of acrylamide and having a Reduced Specific Viscosity of at least 2.