Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUST896051 I4
Publication typeGrant
Publication dateMar 28, 1972
Filing dateNov 12, 1970
Priority dateNov 12, 1970
Publication numberUS T896051 I4, US T896051I4, US-I4-T896051, UST896051 I4, UST896051I4
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Zjl fxx mss mss^h disperstbzg,osi for making microporous materials
US T896051 I4
Previous page
Next page
Description  (OCR text may contain errors)

DEFENSIVE PUBLICATION Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts t Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofllce makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 28, 1972 A process for forming a colloidal polymeric dispersion used in making microporous sheet material having a secant tensile modulus at elongation of about 600 p.s.i. by microblending a solution of a polymeric component and a solution of a solvent and a non-solvent for the polymeric component. The microblending being achieved in about 0.5-5 seconds in a high shear mixing zone having a shear rate of 1,000l50,000 reciprocal seconds and of a stream of a solution of a polymeric component, and particularly a linear polyurethane or a blend of a linear polyurethane and poly (vinyl chloride), at about -60 C. and of a stream of an organic solvent and non-solvent, particularly water, at about -50" C. The quantity of organic solvent being about -25% and the quantity of non-solvent being about 5-75 The temperature of the blend being thereafter reduced about 2-50 C. to form a colloidal polymeric dispersion having a non-solvent content of about 35% by weight.

' March 28, 1972 HAMLlN ETAL T896,051


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5164429 *Jun 22, 1989Nov 17, 1992Stranco, Inc.Untangling polyelectrolytes, flocculants
US5284626 *Jul 9, 1992Feb 8, 1994Stranco, Inc.Mixing polymer and water uniformly at selected concentration at reduced cost
US5284627 *Aug 19, 1992Feb 8, 1994Stranco, Inc.Receptacle with impeller for agitating and shearing aqueous polymeric mixtures to efficiently dissolve and age to maximum viscosity, for waste water flocculation
US5338779 *Sep 18, 1992Aug 16, 1994Stranco, IncCirculating dilution water at high rate; forming slurry without agglomeration
US6409926Nov 6, 2000Jun 25, 2002United States Filter CorporationAir and water purification using continuous breakpoint halogenation and peroxygenation
US6419817Jun 22, 2000Jul 16, 2002United States Filter CorporationDynamic optimization of chemical additives in a water treatment system
US6423234Nov 6, 2000Jul 23, 2002United States Filter CorporationControlling the feed rate of a halogen donor to maintain desired oxidation reduction potential by adding a coagulating agent
US6620315Feb 9, 2001Sep 16, 2003United States Filter CorporationSystem for optimized control of multiple oxidizer feedstreams
US6623647Mar 15, 2002Sep 23, 2003United States Filter CorporationUsed in water treatment procedures
US6645400Dec 10, 2001Nov 11, 2003United States Filter CorporationOf metals which experience active-passive transition in contact with an electrolyte
US6716359Aug 29, 2000Apr 6, 2004United States Filter CorporationEnhanced time-based proportional control
US6776926Aug 9, 2001Aug 17, 2004United States Filter CorporationCalcium hypochlorite of reduced reactivity
US6991735Feb 26, 2002Jan 31, 2006Usfilter CorporationFree radical generator and method
US7108781Feb 26, 2002Sep 19, 2006Usfilter CorporationEnhanced air and water purification using continuous breakpoint halogenation with free oxygen radicals
US7285223Oct 22, 2004Oct 23, 2007Siemens Water Technologies Holding Corp.Continuous measurement halogenation of hydroxy free radicals; oxidation of sports equipment; process control
US8591730Jul 28, 2010Nov 26, 2013Siemens Pte. Ltd.Baffle plates for an ultraviolet reactor
US8652336Jun 5, 2007Feb 18, 2014Siemens Water Technologies LlcUltraviolet light activated oxidation process for the reduction of organic carbon in semiconductor process water
US8741155Jan 17, 2011Jun 3, 2014Evoqua Water Technologies LlcMethod and system for providing ultrapure water
US8753522Jan 17, 2011Jun 17, 2014Evoqua Water Technologies LlcSystem for controlling introduction of a reducing agent to a liquid stream
U.S. Classification523/319, 521/62, 524/507
International ClassificationC08J3/07, C08J3/02
Cooperative ClassificationC08J3/07
European ClassificationC08J3/07