Class 521/37 - Treated with sulfur-containing reactant

Subclass of Class 521 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein the solid polymer is chemically treated
No. of patents: 21
Last issue date: 05/06/2008

Number	Title	Issue Date
7368505	Graft copolymers This invention relates to methods of making graft copolymers, and articles having such graft copolymers. The methods may provide better control than in radicalization or photoinitiated polymerization techniques. For example, a graft copolymer can be prepared by reac...	05/06/2008
7276283	Plasma-enhanced functionalization of carbon-containing substrates Methods for producing plasma-treated, functionalized carbon-containing surfaces are provided. The methods include the steps of subjecting a carbon-containing substrate to a plasma to create surface active sites on the surface of the substrate and reacting the surfac...	10/02/2007
7182981	Cellulose ester film and production method of the same To provide a cellulose ester film formed by casting, which minimizes degradation of optical properties as well as exhibits sufficient mechanical strength generated by the enhancement of tear strength, and further to provide a production method of the same. A ...	02/27/2007
7098252	Preparation of macroreticular polymers The present invention relates to a method of preparing porous macroreticular polymers comprising polymerizing one or more monoethylenically unsaturated monomers in the presence of a silicone based porogen. ...	08/29/2006
7094469	Porous or non-porous substrate coated with an immobilized polymeric composition having sulfonyl groups and hydrophilic functional groups and process A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is formed from a monomer having formula: [T—SO2Y—SO2	08/22/2006
6919382	Preparation and uses of conjugated solid supports for boronic acids The invention provides novel solid supports comprising dihydroxyalkyl aminoalkyl and dihydroxyalkylaminobenzyl groups, and methods for making and using them. The supports are particularly useful for immobilizing and derivatizing functionalized boronic acids for use ...	07/19/2005
6756462	Method for preparation of anion exchange resins An improved process for preparing anion exchange resins based on the use of a non-agitated plug-flow quench procedure followed by recycle of a portion of the recovered chloromethylation reaction fluids into subsequent chloromethylation reactions is disclosed. The co...	06/29/2004
6632847	Polymer composition, membrane containing said composition, method for the production and uses thereof Polymer composition, membrane comprising the same, process for production thereof and use thereof The composition described comprises 30 to 99.5% by weight of a sulfonated aromatic polyether ketone which has an ion-exchange capacity of from 1.3 to 4.0 meq...	10/14/2003
6492431	Process of making a composite membrane The present invention relates to methods of fabricating composite membranes wherein at least one of the components is initially provided in the form of a precursor. The composite material comprising the precursor is processed to transform the precursor an...	12/10/2002
6399235	Polymer electrolyte membrane assembly for fuel cells An electrolyte membrane for use in a fuel cell can contain sulfonated polyphenylether sulfones. The membrane can contain a first sulfonated polyphenylether sulfone and a second sulfonated polyphenylether sulfone, wherein the first sulfonated polyphenyleth...	06/04/2002
5985942	଱, ଲ, ଲ-trifluorostyrene-based composite membranes A composite membrane is provided in which a porous substrate is impregnated with a polymeric composition comprising various combinations of ଱,ଲ,ଲ-trifluorostyrene, substituted ଱,ଲ,ଲ-trifluorostyrene and ethylene-based m...	11/16/1999
5869678	Oxidation of pyridine and derivatives A process for preparing an N-oxide of pyridine or a halopyridine, said process comprising reacting a reaction mixture of said pyridine, or said halopyridine, and hydrogen peroxide in a reaction conducted at an elevated temperature in the presence of a cat...	02/09/1999
5834523	Substituted ଱,ଲ,ଲ-trifluorostyrene-based composite membranes A composite membrane is provided in which a porous substrate is impregnated with a polymeric composition comprising various combinations of ଱,ଲ,ଲ-trifluorostyrene, substituted ଱,ଲ,ଲ-trifluorostyrene and ethylene-based m...	11/10/1998
5498639	Trifluorostyrene and substituted trifluorostyrene copolymeric ion-exchange membranes Polymeric compositions are derived from copolymers of ଱,ଲ, ଲ-trifluorostyrene with a variety of substituted ଱,ଲ,ଲ-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange mem...	03/12/1996
5438077	Ion exchange resins containing glycidyl ether spacer groups An ion exchanger comprising a particle of an insoluble crosslinked polymer having alcoholic hydroxyl groups, as a base material, and a glycidyl-adduct of polyol and/or its oligomer, as a spacer, wherein ion exchange groups are attached to the spacer....	08/01/1995
5302623	Method of stabilizing cation-exchange resins against oxidative degradation Cation-exchange resins are provided which have improved resistance to copolymer degradation caused by oxidizing agents like molecular oxygen. The resins are prepared by incorporating a para-substituted styrenic monomer having an oxidation-stabilizing moie...	04/12/1994
5141966	Metalchelating, hydrophilic polymer The invention concerns a polymer product for immobilizing of metal ions, adsorption, and the like, with the structure P--X--A--Q wherein P is a hydrophilic polymer with a molecular weight of more than 3 000 Daltons. X is a heteroatom, O, S or N, A is an atom s...	08/25/1992
4861803	Organic polymers reinforced with rigid rod micro fillers In one aspect, this invention is a polyurethane polymer having dispersed therein elongated particles of a high-melting, rigid polymer in an amount sufficient to measurably increase the tensile strength and/or elongation of the polyurethane relative to a l...	08/29/1989
4582859	Process for producing an expanded seed copolymer and product therefrom An improved process for the manufacture of crosslinked copolymer particles from seed particles by imbibing a monomer therein and polymerizing the same under controlled suspension conditions wherein said improvement comprises expanding the seed in staged o...	04/15/1986
4424284	Cationic adsorption agent A cationic adsorption agent which is obtained by reaction of (a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof, with (b) an aminoplast precondensate which doe...	01/03/1984
4284512	Iron selective resins prepared from a phenol, HCHO and a di-secondary amine Ferric ions may be removed very selectively from aqueous solutions by means of a metal-chelating resin consisting of the acid-quaternized form of a cross-linked polymer produced by the condensation of a phenolic component comprising one or more phenols, f...	08/18/1981

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Class 521/37 - Treated with sulfur-containing reactant