U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 525/269 - Transition metal is other than Group IVB, VB, or VIB metal atom


Subclass of Class 525 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein the transition metal atom is other
No. of patents: 68
Last issue date: 11/08/2011


1    
NumberTitleIssue Date
8053529Catalytic olefin block copolymers with controlled block sequence distribution
A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer products, said process comprising: 1) contacting an addition polymerizable monomer or mixture of monomers under addition polymerization conditions in a reactor ...
11/08/2011
7368508Functional norbornenes and polymeric derivatives and fabrication thereof
The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po...
05/06/2008
7368509Functional norbornenes and polymeric derivatives and fabrication thereof
The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po...
05/06/2008
7285597Radical polymerization processes for preparing halogenated polymers, and halogenated polymers
Radical polymerization process for the preparation of halogenated polymers employing one or more ethylenically unsaturated monomers, at least one of which is chosen from halogenated monomers, molecular iodine and one or more radical-generating agents chosen from dia...
10/23/2007
7247685Zero valent metal initiated gas-phase deposition polymerization
The present invention relates to a method for preparing polymers by gas-phase deposition polymerization, initiated by a zero valent metal and an initiator. ...
07/24/2007
7241837Vibration damper composition
The present invention has for its object to provide a damping material which, despite a high damping capacity at and around room temperature, has a small temperature dependence of rigidity at and around room temperature and a damping material having hot-melt process...
07/10/2007
7230053Golf ball
A golf ball, typically its core, is manufactured by molding and vulcanizing a rubber composition comprising a base rubber, an unsaturated carboxylic acid or a metal salt thereof, an inorganic filler, an organic peroxide, and an organosulfur compound. The base rubber...
06/12/2007
7214640Ionic material
The present invention relates to a material containing ionic groups, in particular, to the ionic materials that form an ionic pair with a free radical catalyst. Various applications of such materials are also described. Ionic materials can include magnetic particles...
05/08/2007
7205359Functional norbornenes as initiators for radical polymerization, their polymeric derivatives and a process for producing the same
The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis po...
04/17/2007
7183358Hydrophobically modified polymers
Hydrophobically modified polymer compositions contain at least one polymer based on one or more ethylenically unsaturated monomers, in the form of an aqueous polymer dispersions or water-redispersible polymer powder prepared therefrom, further containing, a) one or ...
02/27/2007
7169866Process for preparing homopolymers, copolymers and/or block copolymers by living polymerization with metallocenes having a donor-acceptor interaction
The present invention relates to a process for preparing homopolymers, copolymers and/or block copolymers of 1-olefins by living polymerization, to the use of the homopolymers, copolymers and/or block copolymers obtained for producing high-value materials and to the...
01/30/2007
7148290Rubber composition for golf ball
A rubber composition for a golf ball having excellent rebound characteristics and excellent durability, and showing good workability, which contains a base rubber, a co-crosslinking agent, an organic peroxide and an inorganic filler, wherein the base rubber includes...
12/12/2006
7112632Process for the preparation of low branch content polybutadiene
A process for the preparation of low branch content polybutadiene comprising: (a) a first butadiene polymerisation stage; (b) treatment of the polymer solution obtained upon completion of stage (a) with a coupling ...
09/26/2006
7087689Method for polymerizing styrene
A method of homogeneously polymerizing styrene comprising admixing an ethylenically unsaturated monomer and an initiation system that is soluble in the monomer. This system includes a metal; a peroxide, hydroperoxide or mixture thereof; and a reductant. Under approp...
08/08/2006
7074865Azaborolyl group 4 metal complexes, catalysts and olefin polymerization process
Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic ligand groups, especially 1,2-azaborolyl groups, are disclosed. ...
07/11/2006
6960631Catalyst composition and process for producing copolymer
A method for block copolymerization of a conjugated diene and an aromatic vinyl compound, which comprises the steps of carrying out homopolymerization of the conjugated diene in the presence of a catalyst composition comprising the following components: (A) a metall...
11/01/2005
6887944Modified polypropylene and process for producing same
A modified polypropylene which is a polypropylene having a value of racemic diad fraction [r] in a specific range and modified with a specific compound, e.g., (meth)acrylic acids, and their derivatives or styrene derivatives to have well-balanced properties of affin...
05/03/2005
6730744Method for copolymerization and resulting copolymers
The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earth...
05/04/2004
6716927Perovskite-type organic/inorganic lamellar polymer
Amines having an unsaturated bond can be introduced into the organic layer of organic-inorganic laminar perovskite compounds comprising a metal halide and an organic amine, and the organic layer can be polymerized by applying external energy such as by irradiating w...
04/06/2004
6713565Golf ball
It has been unexpectedly discovered that cis-1,4-polybutadiene that is synthesized utilizing Zeigler-Natta catalyst systems has superior characteristics for utilization in solid golf ball cores if the polymerization is terminated utilizing a carboxylic acid of the s...
03/30/2004
6602960Polymers and copolymers prepared or modified by using cobalt complexes
A polymerization process comprising the steps of admixing a halogen-containing compound, monomer, and a cobalt complex....
08/05/2003
6599996Method for (CO)polymerizing polar and non-polar monomers
In a process for the transition-metal-catalyzed preparation of polymers having a syndiotactic or predominantly syndiotactic structure from vinylaromatic monomers and a process for preparing block copolymers from vinylaromatic monomers and olefinically uns...
07/29/2003
6576722Acrylic-halogenated polyolefin copolymer adhesion promoters
The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an atom transfer radical polymerization process, in which po...
06/10/2003
6486279Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water
Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-methasis reactions is disclosed. The ruthenium catalyst compounds are ruthenium carbene co...
11/26/2002
6462114Microgels and process for their preparation
A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weig...
10/08/2002
6451958Radiation curable acrylate-terminated polymers having polycarbonate repeating units
Polymer having repeating polycarbonate moieties of the formula (I) (Acr)y (A)(Q)(PC)[(Q)(PC)]x (Q)(A)(Acr)y (I) wherein (Acr)y (A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moie...
09/17/2002
6391978Process for the synthesis of hydroxyl-end group functionalized polybutadienes
This invention relates to a process for the synthesis and purification of hydroxyl-end group functionalized, linear, non-crosslinked polyolefins without pendant chain branched groups, and specifically to hydroxyl-end group functionalized polybutadienes. T...
05/21/2002
6284852Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water
Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-metathesis reactions is disclosed. The ruthenium catalyst compounds are ruthenium carbene ...
09/04/2001
6225414Propylene block copolymer
A polypropylene block copolymer obtained by producing an ethylene-propylene copolymer moiety as a component A having an ethylene content of 1.5 to 6.0% by weight in an amount of 40 to 85% by weight based on the total weight of components A and B in the ab...
05/01/2001
6162882Preparation of novel homo- and copolymers using atom transfer radical polymerization
The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur...
12/19/2000
6124411Preparation of novel Homo- and copolymers using atom transfer radical polymerization
The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur...
09/26/2000
5945491Preparation of novel homo- and copolymers using atom transfer radical polymerization
The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur...
08/31/1999
5919866Liquid toners with hydrocarbon solvents
The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release pr...
07/06/1999
5919867Block copolymer and a preparation process thereof
An A-B-A type of block copolymer consisting of polymer block A of (meth)acrylate and polymer block B of olefin, having a Mw/Mn of 1.0 to 2.5, is disclosed. This block copolymer can be produced by polymerizing an olefin using a particular rare earth compou...
07/06/1999
5866663Processes of polymerizing olefins
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal comp...
02/02/1999
5852145Polymerization processes for olefins
Certain olefins such as ethylene, ଱-olefins and cyclopentene can be polymerized by using catalyst system containing a nickel or palladium ଱-diimine complex, a metal containing hydrocarbylation compound, and a selected Lewis acid, or a catalyst...
12/22/1998
5789487Preparation of novel homo- and copolymers using atom transfer radical polymerization
The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architectur...
08/04/1998
5753763Process for preparing liquid toners with hydrocarbon solvents
The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release pr...
05/19/1998
5698634Process for preparing block copolymer of monoolefin
A process for preparing a block copolymer of an ଱-olefin and a vinyl compound is here disclosed which comprises the steps of polymerizing an olefin selected from ethylene and the ଱-olefin having 3 or more carbon atoms by the use of a divalent ...
12/16/1997
5621047Process for preparing linear monofunctional and telechelic difunctional polymers and compositions obtained thereby
This invention relates to a process for preparation of non-crosslinked linear monofunctional and telechelic difunctional unsaturated polymers wherein the functional groups are acrylate or methacrylate groups. The average functionality number of the monofu...
04/15/1997
1    
 
Sign InRegister
Username  
Password   
forgot password?