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...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.

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Class 521/135 - At least one polymer is derived from reactant containing two or more three membered heterocyclic rings having two carbon atoms and one chalcogen atom or polymer-forming system contains the same type of reactant


Subclass of Class 521 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein at least one of the polymers in the
No. of patents: 130
Last issue date: 03/13/2012


1        
NumberTitleIssue Date
8133929Method for incorporating long glass fibers into epoxy-based reinforcing resins
A structural reinforcing material and method of making the same is disclosed and described. The material is prepared by coating glass reinforcing fibers with a molten epoxy-based composition. The glass fiber reinforced material can then be formed into a preform suit...
03/13/2012
7473717Expandable epoxy resin-based systems modified with thermoplastic polymers
Expandable thermosettable compositions containing at least one epoxy resin, at least one finely divided thermoplastic polymer powder, at least one blowing agent, at least one curing agent, and at least one filler are suitable for the production of thermosetting lami...
01/06/2009
7250124Structural reinforcement article and process for preparation thereof
The invention is a process for the preparation of article comprising placing a film on each inner surface of each part of a two part mold; placing an article in the mold with film located between the surface of the mold and the article such that there is a small spa...
07/31/2007
7238407Multi-layer reinforcing laminate
Multi-layer laminates are provided which contain at least two binder layers and at least two textile-containing layers. One binder layer faces a substrate to be reinforced, with a second binder layer between two textile-containing layers wherein one of the textile-c...
07/03/2007
7199165Expandable material
An expandable material and articles incorporating the same are disclosed. The material includes a polymeric admixture; a blowing agent; a curing agent; a tackifier; and optionally, a filler or fiber. ...
04/03/2007
7119149High expansion two-component structural foam
The present invention is directed to a high expansion two-component structural foam that expands to about twice its original volume while maintaining good cell structure. The foam of the present invention is based on epoxy resins. Each component of the foam system e...
10/10/2006
7115673Photosensitive resin composition, porous resin, circuit board, and wireless suspension board
The present photosensitive resin composition 2 comprises a polyamic acid resin 4, a photosensitive agent, a dispersible compound 3 dispersible in the polyamic acid resin 4, and a solvent. The porous resin is obtained by removing the solve...
10/03/2006
7097794Vehicular structural members and method of making the members
The present invention is an article comprising a shaped rigid foam part; a heat activated foamable adhesive applied directly to at least a portion of the outer surface of the shaped foam part and an integral locating means. A second aspect of the invention is a meth...
08/29/2006
7084210Heat activated epoxy adhesive and use in a structural foam insert
An expandable adhesive for a structural foam insert useful for vehicular reinforcement is described. The adhesive is characterized by containing a viscosity enhancing agent such as a polymethylmethacrylate, which results in a cured adhesive having unusually small vo...
08/01/2006
7049349Thermosetting composition and alveolar material formed from such a composition
A thermosetting composition comprising: at least one epoxy resin modified by at least one aromatic polyamine, said resin being formed from at least one polyepoxide containing at least two primary amine groups in its molecule, the m...
05/23/2006
7041355Structural reinforcement parts for automotive assembly
The present invention is a structural reinforcement part for use in automobile assembly comprising a molded shell substantially filled with a structural filler material and an expandable adhesive in contact with the exterior of the molded shell; wherein the structur...
05/09/2006
6998011Epoxy adhesive having improved impact resistance
In the preparation of an improved adhesive composition, an epoxy-based prepolymer is obtained by the reaction of one or more epoxy resins with amino-terminated polyethers and/or carboxyl-terminated butadiene-nitrile rubbers. In one embodiment of the invention, both ...
02/14/2006
6890964Homopolymerized epoxy-based form-in-place material
A two-component foam-in-place structural material for producing a foamed product. The first component of the system includes an epoxy-based resin preferably formulated with a physical blowing agent particulate material. The physical blowing agent core is encapsulate...
05/10/2005
6846559Activatable material
An activatable (e.g., heat expandable) material and articles incorporating the same is disclosed. The material includes an epoxy resin; an epoxy/elastomer hybrid or reaction product; a blowing agent; a curing agent; and optionally, a filler. In preferred embodiments...
01/25/2005
6830799Expandable compositions and methods of making and using the compositions
A novel expandable composition and method for using the same are disclosed. The disclosed method relates to using the composition, for example, as an automotive cavity sealant. The inventive composition normally is a combination of at least one base polymer, at leas...
12/14/2004
6825315Method of making thermally removable adhesives
A method of making a thermally-removable adhesive is provided where a bismaleimide compound, a monomeric furan compound, containing an oxirane group an amine curative are mixed together at an elevated temperature of greater than approximately 90° C. to form a homog...
11/30/2004
6797737Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer
This invention relates to crosslinked polymer foam compositions of an ethylene vinyl acetate copolymer, an acid copolymer or ionomer, and a crosslinking agent. Such compositions exhibit enhanced melt strength, as well as lower density and compression set. They are e...
09/28/2004
6790870Methods of making foamed materials of blended thermoplastic polymers using carbon dioxide
A method of producing a foamed material comprises contacting a mixture comprising a first thermoplastic polymer and a second thermoplastic polymer with a blowing agent, wherein the first thermoplastic polymer has a higher percent crystallinity that the second thermo...
09/14/2004
6787579Two-component (epoxy/amine) structural foam-in-place material
The present invention relates to methods, materials, and products for forming a foamed product, comprising the steps of combining an epoxy-based component with an amine-based component. The epoxy component is cross-linked through a polymerization reaction catalyzed ...
09/07/2004
6730713Creation of epoxy-based foam-in-place material using encapsulated metal carbonate
The invention and formulation relates to methods, materials, and products for foam-in-place materials comprising a two-component foam-in-place structural material for producing a foamed product. A first component of the system includes an epoxy-based resin preferabl...
05/04/2004
6727293Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam
Provided is a foamable composition adapted to form a cross-linked novolac-epoxy resin foam. The foamable composition is formulated from a composition comprising at least one novolac resin, at least one epoxy resin, and at least one blowing agent. ...
04/27/2004
6706772Two component (epoxy/amine) structural foam-in-place material
The present invention relates to methods, materials, and products for forming a foamed product, comprising the steps of combining an epoxy-based component with an amine-based component. The epoxy component is cross-linked through a polymerization reaction catalyzed ...
03/16/2004
6610754Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam
Provided is a foamable composition adapted to form a cross-linked novolac-epoxy resin foam. The foamable composition is formulated from a composition comprising at least one novolac resin, at least one epoxy resin, and at least one blowing agent....
08/26/2003
6610407Corrosion resistant coating for an iron-based part and method for applying same
A method for treating a fastening part made from an iron-based alloy comprising the steps of degreasing and blasting the part; coating the part with an epoxy resin undercoating; and applying another coating thereon as a finish coat. The epoxy resin underc...
08/26/2003
6602924Foamed gypsum compositions
A foamed gypsum composition is provided. The composition may be used in making a crosslinked, foamed gypsum product. The composition is comprised of gypsum, foaming agents, epoxy resin, and a hardener. Optional ingredients would include one or more additi...
08/05/2003
6573305Foams made by photopolymerization of emulsions
The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are discl...
06/03/2003
6573309Heat-curable, thermally expandable moulded park
Foamable compositions which exhibit reduced surface tack and better handling characteristics are obtained through the use of specific combinations of epoxy resins. One or more solid epoxy resins are utilized together with liquid and/or semi-solid epoxy re...
06/03/2003
6562878Acoustic baffle with predetermined directional expansion characteristics
Heat-expandable molded synthetic resin seal and baffle components adapted for use in automobile body cavities or the like are provided which are designed to preferentially expand upon heating in desired directions and to a desired degree, in order to prop...
05/13/2003
6541529Polymer composition for powder foam molding, powder thereof, foam obtained therefrom, process for producing the same, and molded article comprising the foam
A polymer composition for powder foam molding which comprises (A) a polymer having an epoxy group, (B) a peroxide having a temperature for obtaining a half-life of 10 hours of 100° C. or higher, (C) at least one of quaternary ammonium salts and quaternar...
04/01/2003
6528550Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer
This invention relates to crosslinked polymer foam compositions of an ethylene vinyl acetate copolymer, an ethylene/acrylic acid copolymer or ionomer, and a crosslinking agent. Such compositions exhibit enhanced melt strength, as well as lower density and...
03/04/2003
6492432Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam
Provided is a foamable composition adapted to form a cross-linked novolac-epoxy resin foam. The foamable composition is formulated from a composition comprising at least one novolac resin, at least one epoxy resin, and at least one blowing agent....
12/10/2002
6479560Foaming compositions and methods for making and using the composition
A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence...
11/12/2002
6476087Method of manufacturing syntactic foam
A method of manufacturing syntactic foam is disclosed which includes the steps of combining a polymer, microspheres and a solvent to form a slurry. At least a portion of the solvent is removed through a porous wick, and conditions are applied which substa...
11/05/2002
6451876Two component thermosettable compositions useful for producing structural reinforcing adhesives
A two part system for producing structural reinforcing adhesives is provided wherein one component containing epoxy resin is combined with a second component containing a specified curative system. An aliphatic polyamine, an amidoamine, an alcohol and an ...
09/17/2002
6444713Foaming compositions and methods for making and using the compositions
A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence...
09/03/2002
6403669Alveolar materials that contain at least one thermoplastic polymer, at least one modified epoxide resin and at least one pore-forming agent
Alveolar materials that comprise at least one thermoplastic polymer that is selected from the group that is formed by polyetherimides, polysulfones and polyphenylene-ethers, at least one epoxide resin that is modified by at least one aromatic polyamine an...
06/11/2002
6403668Foam materials and foam precursor materials
Foam precursor materials are taught comprising an epoxy resin having an epoxy equivalents value of about 300-4000, a curing agent and a foaming agent. The foam precursor materials may be expanded and cured by heat to form foam materials that exhibit excel...
06/11/2002
6387470Sound deadening and structural reinforcement compositions and methods of using the same
Expandable sealant and baffle compositions and methods of forming and using such compositions are provided wherein the compositions comprise a first thermoplastic resin, an epoxy resin, preferably a second thermoplastic resin different from the first ther...
05/14/2002
6376564Storage-stable compositions useful for the production of structural foams
Foamable compositions based on epoxy resins which exhibit good shelf life are obtained through the use of specific blowing agent and curing accelerator systems. The blowing agent system contains azodicarbonamide, while the curative system contains an amin...
04/23/2002
6368438Sound deadening and structural reinforcement compositions and methods of using the same
Expandable sealant and baffle compositions and methods of forming and using such compositions are provided wherein the compositions comprise a first thermoplastic resin, an epoxy resin, preferably a second thermoplastic resin different from the first ther...
04/09/2002
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