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Class Information
Number: 521/117
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 formation prior to or during solid polymer formation in the presence of a stated ingredient other than water > Ingredient contains a -c-xh group wherein x is a chalcogen atom and the carbon atom is not double-bonded to a chalcogen atom, phenol, etc.
Description: Subject matter wherein the stated ingredient contains a C-XH group, wherein X is a chalcogen atom, and wherein the carbon atom bonded to the chalcogen atom of the XH group is not double bonded to an additional chalcogen atom.


Sub-classes under this class:

Class Number Class Name Patents
521/118 -c-xh ingredient contains a nitrogen atom 179


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
7431794 Process for producing leather-like sheet Oct. 7, 2008
7393879 High resilient silicone foam and process for preparing same Jul. 1, 2008
7288211 Hydrofluorocarbon blown foam and method for preparation thereof Oct. 30, 2007
7262227 Process for producing synthetic resin foam, blowing agent and premix Aug. 28, 2007
7230037 Method for mixing a polyol component and an isocyanate component Jun. 12, 2007
7183331 Method for producing a rigid polyurethane foam Feb. 27, 2007
7169339 Method for producing polymethacrylimide foams Jan. 30, 2007
7087657 Stable polyol dispersions, polyurethane moldings produced therefrom, and their use Aug. 8, 2006
7074880 Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same Jul. 11, 2006
6921779 Blowing agent enhancers for polyurethane foam production Jul. 26, 2005
6903149 Composition for wood-polymer composite and wood-polymer composite made from the composition Jun. 7, 2005
6890966 Process for the production of a lightweight cold urethane May. 10, 2005
6861452 Composition for production of flame-retardant flexible polyurethane foams Mar. 1, 2005
6855741 Composition for use in flexible polyurethane foams Feb. 15, 2005
6818674 Elastic member and image formation equipment Nov. 16, 2004
6790871 Isocyanate-based polymer foam and process for production thereof Sep. 14, 2004
6790820 Compositions of hydrofluorocarbons and trans-1,2-dichloroethylene Sep. 14, 2004
6787575 Method for processing a mineral fillers with a phosphate, said fillers and their uses Sep. 7, 2004
6777382 Compositions of hydrofluorocarbons and methanol Aug. 17, 2004
6777456 Method for producing a rigid polyurethane foam Aug. 17, 2004
6767929 Process for producing polyurethane Jul. 27, 2004
6765032 Treated mineral fillers suspensions of these fillers in polyols and their uses in polyurethane foams Jul. 20, 2004
6753356 Foaming compositions Jun. 22, 2004
6676849 Low yellowing scorch inhibitor composition Jan. 13, 2004
6670405 Method for producing block-shaped polymethacrylimide foamed materials Dec. 30, 2003
6660780 Molecularly-imprinted material made by template-directed synthesis Dec. 9, 2003
6653361 Flame retardant polyurethane composition and method of manufacture thereof Nov. 25, 2003
6617365 Use of silicon-polyether copolymers in the production of high resilience polyurethane foams Sep. 9, 2003
6586487 Low-density, water blown polyurethane foams for energy-absorbing applications Jul. 1, 2003
6586485 Production of flexible polyurethane foams Jul. 1, 2003
6583191 Molecularly-imprinted material made by template-directed synthesis Jun. 24, 2003
6545063 Hydrofluorocarbon blown foam and method for preparation thereof Apr. 8, 2003
6534555 Catalyst systems for polyurethane polyester foams Mar. 18, 2003
6525107 Acid-blocked amine catalysts for the production of polyurethanes Feb. 25, 2003
6506810 Use of mixtures of organofunctionally modified polysiloxanes with branched alcohols in the production of flexible polyurethane foams Jan. 14, 2003
6461536 Stable polyester polyol composition Oct. 8, 2002
6458860 Advances in urethane foam catalysis Oct. 1, 2002
6451348 Method of manufacturing porous matrix-type controlled release systems using emulsion technique Sep. 17, 2002
6433032 Process for rigid polyurethane foams Aug. 13, 2002
6387972 Process to enhance polyurethane foam performance May. 14, 2002
6355701 Process for manufacturing rigid polyisocyanurate foam products Mar. 12, 2002
6348514 Stabilized polyether polyol and polyurethane foam obtained therefrom Feb. 19, 2002
6326410 Wound dressing comprising polyurethane foam Dec. 4, 2001
6310110 Molecularly-imprinted material made by template-directed synthesis Oct. 30, 2001
6303669 Flexible polyurethane foam Oct. 16, 2001
6268402 Process for making isocyanate-based rigid foam Jul. 31, 2001
6268046 Process for producing extruded foam products having polystyrene blends with high levels of CO2 as a blowing agent Jul. 31, 2001
6262136 Storage stable foam-forming system Jul. 17, 2001
6258866 Blowing agent compatabilization Jul. 10, 2001
6245826 Isocyanate-based rigid foam Jun. 12, 2001

1 2 3 4 5 6


 
 
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