1
Brian Dymond: Polymers for drilling and reservoir fluids and their use. Ciba Specialty Chemicals Water Treatments, David R Crichton, February 1, 2000: US06020289 (45 worldwide citation)

Aqueous drilling and reservoir fluids are provided comprising polymers with shale and clay inhibition characteristics. These polymers are dissolved in the fluid and are formed from 50 to 100 mo % monomers of formula (I), wherein R.sup.1 is selected from H and C.sub.1 to C.sub.4 alkyl groups; R.sup.2 ...


2
Mads Lykke, Kishor Kumar Mistry, Ole Simonsen, Kenneth Charles Symes: Particles having a polymeric shell and their production. Ciba Specialty Chemicals Water Treatments, Sughrue Mion PLLC, March 19, 2002: US06359031 (45 worldwide citation)

Particles have a hydrophilic core, for instance including an enzyme and a polymer, surrounded by a shell formed by interfacial condensation polymerisation in the presence of a polymeric stabilizer. Preferably the polymeric stabilizer is a random copolymer which will concentrate at the interface betw ...


3
Howard Roger Dungworth, Bryan David Grey, John Robert Stockwell: Particles having surface properties and methods of making them. CIBA Specialty Chemicals Water Treatments, David R Crichton, December 11, 2001: US06329057 (44 worldwide citation)

Polymer particles comprising a hydrophobic organic matrix and located at the exterior free cationic groups and a further polymer which comprises free hydroxy groups. The particles are produced by an aqueous suspension polymerization process wherein the continuous aqueous phase contains a polymerizat ...


4
Zhiqiang Song, George W Schriver, Dennis M Mahoney, Louis E Trapasso: Preparation of water-soluble cross-linked cationic polymers. Ciba Specialty Chemicals Water Treatments, David R Crichton, November 27, 2001: US06323306 (33 worldwide citation)

High molecular weight, water-soluble, cross-linked cationic polymers are prepared by reacting amine-functionalized cationic base polymers, in which the monomer units of the base polymer contain from about 0.05 to about 5.0% amine functionalized monomer units and from about 95 to about 99.95% additio ...


5
Graham Greenwood: Manufacture of paper. Ciba Specialty Chemicals Water Treatments, David R Crichton, May 29, 2001: US06238520 (28 worldwide citation)

Starch is added to the thinstock in a papermaking process in the form of a coagulated slurry containing undissolved starch particles, cationic polymeric flocculant and anionic microparticulate network agglomeration aid, such as bentonite. The flocculant and agglomeration aid interact to give network ...


6
Philip McColl, Stephen Scammell: Treatment of aqueous suspensions. Ciba Specialty Chemicals Water Treatments, Shiela A Loggins, March 8, 2011: US07901583 (27 worldwide citation)

A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved while retaining the fluidity of the material during transfer, by combining with the m ...


7
Mark Sirfaraz Ghafoor, Malcolm Skinner, Ian Michael Johnson: Polymeric compositions and their production and uses. Ciba Specialty Chemicals Water Treatments, David R Crichton, February 29, 2000: US06031037 (26 worldwide citation)

A stable, pourable, liquid composition contains 20 to 60% by weight of a blend of a water soluble high IV polymer and a water soluble low IV cationic coagulant polymer, is selected from polyamines, cationic dicyandiamide polymers and polymers of 70 to 100% ethylenically unsaturated cationic monomer ...


8
Gordon Cheng I Chen, Gary Peter Richardson: Manufacture of paper and paperboard. Ciba Specialty Chemicals Water Treatments, David R Crichton, February 25, 2003: US06524439 (25 worldwide citation)

According to the present invention a process is provided for making paper or paper board comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a screen to form a sheet and then drying the sheet, characterised in that the suspension is flocculated using a ...


9
Gordon Cheng I Chen: Manufacture of paper and paperboard. Ciba Specialty Chemicals Water Treatments, David R Crichton, September 24, 2002: US06454902 (24 worldwide citation)

A process for making paper comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a screen to form a sheet and then drying the sheet, wherein the cellulosic suspension is flocculated by addition of a water soluble polymer which is selected from


10
Steven Weir, Michael Green, John Stephen Robinson, Tony Whittaker, Malcolm Skinner: Process for flocculating suspensions. Ciba Specialty Chemicals Water Treatments, Shiela A Loggins, July 4, 2006: US07070696 (23 worldwide citation)

A process of flocculating and dewatering an aqueous suspension of suspended solids comprising, introducing into the suspension, (a) substantially linear polymer, (b) structured polymer, characterised in that the polymers are introduced into the substrate sequentially. The process brings about improv ...