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Class Information
Number: 521/178
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Cellular product derived from a reactant containing two or more three membered heterocyclic rings wherein two of the ring members are carbon atoms and the remaining ring member is a chalcogen atom
Description: Subject matter involving a cellular polymer derived from at least one reactant containing two or more-- groups (X is a chalcogen) or process of preparing composition containing a polymer derived from a reactant containing two or more -- groups or involving a polymerizable reactant containing two or more -- (X is a chalcogen) groups and which composition is capable of forming a cellular product or processes of preparing same; processes of treating a cellular polymer derived from a reactant containing two or more -- groups (X is a chalcogen) with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein or neither forms a desired composition with the cellular polymer or products of such a treatment; processes of treating a cellular polymer derived from a reactant containing two or more -- groups without the addition of a material thereto whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.


Sub-classes under this class:

Class Number Class Name Patents
521/179 With -c(=x)-x containing reactant wherein x is a chalcogen atom 19


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7232877 Preparation of oligomeric cyclocarbonates and their use in ionisocyanate or hybrid nonisocyanate polyurethanes Jun. 19, 2007
7199165 Expandable material Apr. 3, 2007
7119149 High expansion two-component structural foam Oct. 10, 2006
7114503 Process for producing an open celled foam Oct. 3, 2006
7084210 Heat activated epoxy adhesive and use in a structural foam insert Aug. 1, 2006
7049349 Thermosetting composition and alveolar material formed from such a composition May. 23, 2006
6998011 Epoxy adhesive having improved impact resistance Feb. 14, 2006
6890964 Homopolymerized epoxy-based form-in-place material May. 10, 2005
6887914 Structural hot melt material and methods May. 3, 2005
6866803 Mold for use in slip casting method, and method of manufacturing open porous body for use in mold Mar. 15, 2005
6831113 Amine-modified epoxy resin reacted in presence of latent hardener Dec. 14, 2004
6830799 Expandable compositions and methods of making and using the compositions Dec. 14, 2004
6825315 Method of making thermally removable adhesives Nov. 30, 2004
6787579 Two-component (epoxy/amine) structural foam-in-place material Sep. 7, 2004
6730713 Creation of epoxy-based foam-in-place material using encapsulated metal carbonate May. 4, 2004
6727293 Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam Apr. 27, 2004
6706772 Two component (epoxy/amine) structural foam-in-place material Mar. 16, 2004
6610754 Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam Aug. 26, 2003
6610407 Corrosion resistant coating for an iron-based part and method for applying same Aug. 26, 2003
6602924 Foamed gypsum compositions Aug. 5, 2003
6573309 Heat-curable, thermally expandable moulded park Jun. 3, 2003
6569507 Method of increasing the strength and fatigue resistance of fiber reinforced composites May. 27, 2003
6562878 Acoustic baffle with predetermined directional expansion characteristics May. 13, 2003
6541529 Polymer composition for powder foam molding, powder thereof, foam obtained therefrom, process for producing the same, and molded article comprising the foam Apr. 1, 2003
6492432 Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam Dec. 10, 2002
6479560 Foaming compositions and methods for making and using the composition Nov. 12, 2002
6476087 Method of manufacturing syntactic foam Nov. 5, 2002
6451876 Two component thermosettable compositions useful for producing structural reinforcing adhesives Sep. 17, 2002
6444713 Foaming compositions and methods for making and using the compositions Sep. 3, 2002
6403668 Foam materials and foam precursor materials Jun. 11, 2002
6403669 Alveolar materials that contain at least one thermoplastic polymer, at least one modified epoxide resin and at least one pore-forming agent Jun. 11, 2002
6376564 Storage-stable compositions useful for the production of structural foams Apr. 23, 2002
6368438 Sound deadening and structural reinforcement compositions and methods of using the same Apr. 9, 2002
6362246 Porous surface compositions and methods of retaining biological samples on said surface Mar. 26, 2002
6353081 Curing agents for epoxy compounds, processes for their production and their use Mar. 5, 2002
6348513 Reduced tack compositions useful for the production of reinforcing foams Feb. 19, 2002
6337384 Method of making thermally removable epoxies Jan. 8, 2002
6319964 Acoustic baffle with predetermined directional expansion characteristics Nov. 20, 2001
6284809 Thermally insulating syntactic foam composition Sep. 4, 2001
6279652 Heat insulation compositions and methods Aug. 28, 2001
6281260 Expansion temperature tolerant dry expandable sealant and baffle product Aug. 28, 2001
6218442 Corrosion resistant structural foam Apr. 17, 2001
6150428 Expansion temperature tolerant dry expandable sealant and baffle product and method of preparing same Nov. 21, 2000
6103784 Corrosion resistant structural foam Aug. 15, 2000
5989692 Porous surface for laboratory apparatus and laboratory apparatus having said surface Nov. 23, 1999
5900320 Foamed plastic and method of manufacturing the same May. 4, 1999
5837739 Loaded syntactic foam-core material Nov. 17, 1998
5804608 Heat-foamable filling reinforcement and reinforced closed-section structural-member making use of the same Sep. 8, 1998
5759692 Phosphorous-modified coating compositions, a process for their preparation, and their use as an intumescent coating Jun. 2, 1998
5759691 Phosphorus-modified coating compositions, a process for their preparation, and their use Jun. 2, 1998

1 2 3


 
 
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