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Class Information
Number: 521/180
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 phenol, phenol ether, or inorganic phenolate reactant
Description: Subject matter involving a cellular polymer derived from at least one reactant which is a phenol, phenol ether, or inorganic phenolate or process of preparing; composition containing a polymer derived from a phenol, phenol ether, or inorganic phenolate or involving a polymerizable phenol, phenol ether or inorganic phenolate and which composition is capable of forming a cellular product or processes of preparing same; processes of treating a cellular polymer derived from a phenol, phenol ether, or inorganic phenolate 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 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
521/181 With reactant which is an aldehyde or aldehyde derivative 225


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8524853 Segmented polyarylene ether block copolymers Sep. 3, 2013
8513319 Mesoporous carbon materials Aug. 20, 2013
8481788 Process for producing polyalkylene oxide Jul. 9, 2013
8436065 Aerogel, and composition and method for manufacture of the aerogel May. 7, 2013
8378054 Method for producing polyaryl ethers Feb. 19, 2013
8309256 Microporous film and method for producing the same Nov. 13, 2012
8298465 Microporous film and method for producing the same Oct. 30, 2012
8277719 Process for the preparation of auxetic foams Oct. 2, 2012
8143335 Adhesive composition Mar. 27, 2012
8124663 Foamed isocyanate-based polymer having improved hardness properties and process for production thereof Feb. 28, 2012
8119700 Organic aerogel, composition for forming the same, and method of preparing the same Feb. 21, 2012
8101672 Azeotrope-like compositions of 1,1,2,3,3-pentafluoropropene Jan. 24, 2012
8026292 Cyanate-based, carbon-dioxide-filled structured foams and method for their production Sep. 27, 2011
7977451 Polyarylether membranes Jul. 12, 2011
7842379 Polymeric foams with nanocellular morphology and methods for making them Nov. 30, 2010
7718751 Syntactic phenolic foam composition May. 18, 2010
7582721 Two step preparation of random polyoxadiazole copolymer and articles resulting therefrom Sep. 1, 2009
7528216 Two step preparation of random polyoxadiazole copolymer and articles resulting therefrom May. 5, 2009
7368502 Hydroxyphenyl cross-linked macromolecular network and applications thereof May. 6, 2008
7291653 Preparation of hydrophobic organic aeorgels Nov. 6, 2007
7285575 Metal-doped organic gels and method thereof Oct. 23, 2007
7005181 Organic, open cell foam materials, their carbonized derivatives, and methods for producing same Feb. 28, 2006
6887915 Precision casting and dead-mold casting in plastic/carbon aerogels May. 3, 2005
6743846 Preparation of flame retardant expandable poly(arylene ether)/polystyrene compositions Jun. 1, 2004
6689295 Carbonaceous porous body and method for producing the same Feb. 10, 2004
6613809 Metal-doped organic gels and method thereof Sep. 2, 2003
6599953 Precision casting and dead-mold casting in plastic/carbon aerogels Jul. 29, 2003
6583205 Flame retardant expandable poly(arylene ether)/polystyrene compositions and preparation thereof Jun. 24, 2003
6506808 Microcellular thermoset foams and method for producing the same Jan. 14, 2003
6391934 Manufacturing foams by stress-induced nucleation May. 21, 2002
6380271 Material for electrical insulating organic film, electrical insulating organic film and process for the preparation thereof Apr. 30, 2002
6218441 Melt-spun polysulfone semipermeable membranes and methods for making the same Apr. 17, 2001
6100359 Ablative polyurea foam and prepolymer Aug. 8, 2000
6046249 Dimensional stabilizing, cell opening additives for polyurethane flexible and rigid foams Apr. 4, 2000
6031012 Curable composition, foam produced therefrom, and process for producing the foam Feb. 29, 2000
6013748 Aromatic ester compound and second-order non-linear optical material therewith Jan. 11, 2000
5994423 Urine absorber, method for producing it, urine absorbing method utilizing it and portable toilet Nov. 30, 1999
5994418 Hollow polyimide microspheres Nov. 30, 1999
5989467 Ceramic foam precursor resin composition Nov. 23, 1999
5962539 Process and equipment for drying a polymeric aerogel in the presence of a supercritical fluid Oct. 5, 1999
5958989 Highly asymmetric ultrafiltration membranes Sep. 28, 1999
5900320 Foamed plastic and method of manufacturing the same May. 4, 1999
5886059 Highly asymmetric polyethersulfone filtration membranes Mar. 23, 1999
5830987 Amino-acrylate polymers and method Nov. 3, 1998
5789452 Polyarylene sulfide foams and a process for their production Aug. 4, 1998
5786397 Foamable molding compositions Jul. 28, 1998
5760162 Preparation of poly-o-hydroxyamides and poly-o-mercaptoamides Jun. 2, 1998
5759691 Phosphorus-modified coating compositions, a process for their preparation, and their use Jun. 2, 1998
5759692 Phosphorous-modified coating compositions, a process for their preparation, and their use as an intumescent coating Jun. 2, 1998
5716999 Polyarylene sulfide foams and a process for their production Feb. 10, 1998

1 2 3 4 5










 
 
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