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Class 422/901 - POLYMER DISSOLVER


Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: A cross-reference art collection of apparatus specifically
No. of patents: 27
Last issue date: 10/19/2004


NumberTitleIssue Date
6805803Process for flocculating suspensions
A process of flocculating and dewatering an aqueous suspension of suspended solids comprising, introducing into the suspension, (a) a concentrated polymer solution and, (b) a dilute polymer solution, characterised in that the concentrated and dilute polymer solution...
10/19/2004
6683153Thermal separation method for mixed polymers
A method for separating technical and biological polymers by generating two liquid phases using an added gas or an adjusted temperature. The separated polymers are obtained in solution with a high degree of purity. Complete separation can be achieved by s...
01/27/2004
6214926Silicone membranes formed without the use of 1-1-1 trichloroethane
A solvent mixture to disperse or dissolve a copolymer of methyl-trifluoropropyl siloxane and dimethylsiloxane, the solvent mixture comprising perchlorethylene, a selected acid ester, and a selected ketone. The invention also comprehends the combination of...
04/10/2001
5935536Recovery of recycled plastics in granular form
Apparatus and method for reclaiming expanded synthetic resin wastes in a form suitable for subsequent injection molding. The apparatus includes a tank containing a solvent having a pump for pumping dissolved resin wastes to an evaporator. The evaporator c...
08/10/1999
5891403Apparatus and method for disposal of expanded polystyrene waste
The present invention features a portable waste disposal unit designed to receive expanded polystyrene or similar polymeric waste. Waste is loaded into a waste reception chamber via a loading door. Once the loading door is closed and locked, a mechanical ...
04/06/1999
5814674Method for processing residue-containing packages
A method is disclosed for processing residue-containing packages so as to receive valuable materials, in particular pressure containers for dispensing foams with propellant gases. For that purpose, extraction with a solvent is carried out essentially in a...
09/29/1998
5749376Medical treatment and waste disposal method
A medical method utilizes a medical instrument such as a suturing needle made of biocompatible material. In addition, a medical operating room is provided with a container of a solvent fluidic material. During a medical procedure, the instrument is used t...
05/12/1998
5674914Method and apparatus for reclamation of waste polyvinyl chloride
A method of reclaiming waste polyvinyl chloride according to the present invention includes the steps of bringing industrial waste containing polyvinyl chloride into contact with a solvent in which polyvinyl chloride can be dissolved, to remove polyvinyl ...
10/07/1997
5672631Method for processing packaging remnants with recovery of materials
The invention concerns the method and apparatus for processing remnant-holding packagings while recovering substances of value, said method including the following steps: The packagings are inserted into an operational vessel 13, and the residues are extr...
09/30/1997
5584305Performance meter taking into account trip parameters
A meter measuring the speed of a person moving using his muscular energy includes apparatus for providing speed data; meters for measuring, directly or indirectly, at least one parameter affecting the effort to make to obtain motion; and processors, takin...
12/17/1996
5561215Pyrrolidones for cleanup of sulfur-containing polymers
A method for removing cured sulfur-containing polymer sealants from surfaces is disclosed. The method comprises applying to the surface a sealant remover comprising at least about 50 wt. % of a pyrrolidone, especially N-methyl-2-pyrrolidone, and allowing ...
10/01/1996
5426137Method for continuously mixing fluids
Apparatus and method of hydrating a particulated polymer and producing a well treatment gel includes a mixer for spraying the polymer with water at a substantially constant water velocity and at a substantially constant water spray pattern at all flow rat...
06/20/1995
5338779Dry polymer activation apparatus and method
Polymer activation apparatus for activating a batch of dry polymer in dilution water includes a tank which contains the dilution water in a mixing vessel and a mixing assembly within the mixing vessel. The dilution water is circulated at a high rate throu...
08/16/1994
5284626Polymer activation apparatus
A polymer activation apparatus for activating and diluting a liquid polymer with water includes, a vessel defining a cylindrical chamber divided into first and second processing zones, the polymer and water being supplied to the first processing zone, an ...
02/08/1994
5284627Polymer activation apparatus
Polymer activation apparatus for activating a liquid polymer emulsion in dilution water includes a first processing zone in which the polymer solution is subjected to a high mean shear rate for a predetermined period of time, and a second processing zone ...
02/08/1994
5223221Method to prevent tampering with urine specimens and the means relating thereto
This invention is a method and means to prevent tampering when urine specimens are donated for testing and to do so without violating privacy. The method is to require that the hands of the donor subject be continuously engaged while the specimen containe...
06/29/1993
5061456Polymer activation apparatus
A polymer activation apparatus for activating and diluting a liquid polymer with water includes, a vessel defining a cylindrical chamber divided into first and second processing zones, the polymer and water being supplied to the first processing zone, an ...
10/29/1991
4846582Polymer dissolver
The present invention relates to a method for dissolving a solid polymer in a solvent, in which the polymer in a fine-particulate state is introduced into a jet of solvent at substantially right angles thereto, such that the polymer particles are captured...
07/11/1989
4537513Process for dissolving polymeric material
A dispersion of polymeric particles in a non-aqueous liquid is mixed with water with sufficient agitation to initiate substantial dissolution of the particles into water and is substantially homogeneously dispersed into the water substantially immediately...
08/27/1985
4517097Process for diluting aqueous polymer solutions
A process for preventing, or at least substantially reducing, scaling in an aqueous polymer dilution apparatus by injecting carbon dioxide gas into the solution to maintain the pH of the solution in a range which tends to hold scale forming substances in ...
05/14/1985
4468257Washing and removal method of high molecular substances
Method of adding water and a hydroxide of an alkali metal or alkaline earth metal to a washing solvent such as an alkylamide and/or alkylsulfoxide when washing and removing high molecular substances stuck on the interior of a production apparatus or moldi...
08/28/1984
4420572Continuous process for the production of highly concentrated spinning solutions of acrylonitrile polymers and a suitable device for this purpose
The invention relates to a process and device for the production of highly concentrated spinning solutions from acrylonitrile polymers, where the dissolving is carried out in one step in a stirred mixing vessel, which has a disc-shaped stirrer rotating in...
12/13/1983
4402916Dilution apparatus and method
Apparatus, and method, for diluting polymer solutions of a known concentration to a preselected lower concentration without any concomitant degradation or thinning of the polymer comprising the solution. The apparatus comprises an elongated chamber desira...
09/06/1983
4340076Dissolving polymers in compatible liquids and uses thereof
This invention provides a technique for extremely rapid dissolution, or dispersion on essentially the molecular level, of certain polymeric materials in compatible liquid vehicles. The polymeric materials are comminuted at cryogenic temperatures and are t...
07/20/1982
4212848Apparatus and process for the manufacture of fibrils
The invention is directed to an apparatus useful for dissolving high molecular weight olefin polymers in a hot hydrocarbon solvent. The apparatus includes: (a) A plurality of interconnected fluid chambers, each of which has a fluid inlet and a fluid outle...
07/15/1980
4144307Internally coated reaction vessel for use in olefinic polymerization
This invention relates to a polymerization reaction vessel having an approximate monolayer coating on the inner surfaces thereof which is obtained by applying thereto an aqueous coating solution containing a tannin, such as, for example, tannic acid. When...
03/13/1979
3957448Divided horizontal reactor for the vapor phase polymerization of monomers at different hydrogen levels
Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising: (a) a horizontal reactor of substantially circular cross-section containing a centrally-located drive shaft extending longitudinally through said reactor to whi...
05/18/1976
 
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