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Class Information
Number: 521/170
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 -n=c=x containing reactant wherein x is a chalcogen atom > With -xh reactant wherein x is a chalcogen atom
Description: Subject matter wherein a -XH (X is a chalcogen containing material) is reacted with a -N=C=X containing material.


Sub-classes under this class:

Class Number Class Name Patents
521/174 -xh reactant contains a c-x-c group 921
521/172 -xh reactant contains a c=x group, e.g., carboxylic acid ester, etc. 461
521/171 -xh reactant contains a halogen atom 78


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
7456229 Process for the production of rigid and semi-rigid foams with low amounts of diisocyanate using polymer polyols characterized by high solids and a high hydroxyl number and the resultant foams Nov. 25, 2008
7455799 Method of producing polishing pad-use polyurethane foam and polyurethane foam Nov. 25, 2008
7435762 Fire resistant foam and foam products, method and dispersions for making same Oct. 14, 2008
7432312 Polyurethane foam having deodorization property or antibacterial effect Oct. 7, 2008
7423069 Blends of tetrahalophthalate esters and phosphorus-containing flame retardants for polyurethane compositions Sep. 9, 2008
7414080 Polyurethane polishing pad Aug. 19, 2008
7393465 Hydrophobic polyols of low viscosity Jul. 1, 2008
7393879 High resilient silicone foam and process for preparing same Jul. 1, 2008
7390839 Blends of alkyl substituted triaryl phosphate esters with phosphorus-containing flame retardants for polyurethane foams Jun. 24, 2008
7390867 Isocyanate adducts Jun. 24, 2008
7388036 Flexible polyurethane foam, process for its production, and seat for automobile employing it Jun. 17, 2008
7388037 Low-resilience flexible polyurethane foam and process for producing the same Jun. 17, 2008
7378454 Polyurethane composition and polishing pad May. 27, 2008
7361695 Process to manufacture flexible polyurethane foams Apr. 22, 2008
7338983 Low density polyurethane foam, method of producing, and articles comprising the same Mar. 4, 2008
7326362 Blowing agent, premix and process for preparing rigid polyurethane foam or polyisocyanurate foam Feb. 5, 2008
7326738 Composition and process for forming a flexible polyurethane foam sealing device Feb. 5, 2008
7300961 Polyol compositions useful for preparing dimensionally stable, low density water-blown rigid foams and the processes related thereto Nov. 27, 2007
7288577 Polyurethane foam containing flame retardant blend of non-oligomeric and oligomeric flame retardants Oct. 30, 2007
7285577 Method for producing rigid polyurethane foam Oct. 23, 2007
7268170 Foam modifier, foams prepared from this novel foam modifier and a process for the preparation of these foams Sep. 11, 2007
7262227 Process for producing synthetic resin foam, blowing agent and premix Aug. 28, 2007
7259191 Multi-layer golf ball with a foamed intermediate layer Aug. 21, 2007
7247658 Reduction of discoloration in white polyurethane foams Jul. 24, 2007
7244772 Process for preparing polyurethane polyol and rigid foams therefrom Jul. 17, 2007
7230036 Foam insulation made with expandable microspheres and methods Jun. 12, 2007
7230037 Method for mixing a polyol component and an isocyanate component Jun. 12, 2007
7223801 Joint fill composition and method May. 29, 2007
7214294 Azeotrope-like compositions of pentafluoropropane and water May. 8, 2007
7202284 Foamed thermoplastic polyurethanes Apr. 10, 2007
7199164 High-strength black polyurethane foams Apr. 3, 2007
7192990 Tertiary amino alkyl amide polyurethane catalysts derived from long chain alkyl and fatty carboxylic acids Mar. 20, 2007
7189765 Improving the physical properties of polyurethane foams using tertiary amino alkyl amide catalysts Mar. 13, 2007
7183330 Silicone surfactants for rigid polyurethane foam made with hydrocarbon blowing agents Feb. 27, 2007
7183331 Method for producing a rigid polyurethane foam Feb. 27, 2007
7179845 Elastomeric latex foams Feb. 20, 2007
7179846 Soundproofing and thermally insulating structural element Feb. 20, 2007
7169824 Process for preparing a flexible polyurethane foam Jan. 30, 2007
7169823 Tertiary alkanolamine polyurethane catalysts derived from long chain alkyl and fatty carboxylic acids Jan. 30, 2007
7144926 Blowing agent blends Dec. 5, 2006
7141613 Flame resistant rigid foams and formulations for the production thereof Nov. 28, 2006
7138437 Polyurethane composition containing a property-enhancing agent Nov. 21, 2006
7132459 Moulded bodies made from a polyurethane material, production and use thereof Nov. 7, 2006
7122135 Blend of organophosphorus flame retardant, lactone stabilizer, and phosphate compatibilizer Oct. 17, 2006
7098255 Process for producing polyurethane foam Aug. 29, 2006
7087657 Stable polyol dispersions, polyurethane moldings produced therefrom, and their use Aug. 8, 2006
7078442 Method of consolidating sand or gravel into a solid mass Jul. 18, 2006
7078443 Viscoelastic foam layer and composition Jul. 18, 2006
7008974 Composition for preparing rigid polyurethane foam having good demolding property Mar. 7, 2006
7008973 Vacuum cooled foams Mar. 7, 2006

1 2 3 4 5 6 7 8 9 10 11 12


 
 
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