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Class Information
Number: 521/163
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 nitrogen containing reactant
Description: Subject matter wherein a nitrogen containing material is reacted with a -N=C=X containing reactant.


Sub-classes under this class:

Class Number Class Name Patents
521/164 Nitrogen reactant contains a c-xh group wherein x is a chalcogen atom and wherein the c atom is not double-bonded to a chalcogen atom 253


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

Patent Number Title Of Patent Date Issued
7622542 Plastic moldings from optionally filled polyurethanes and their use Nov. 24, 2009
7572837 Process for the production of flexible polyurethane foams Aug. 11, 2009
7541388 Polyimide foams Jun. 2, 2009
7414080 Polyurethane polishing pad Aug. 19, 2008
7259191 Multi-layer golf ball with a foamed intermediate layer Aug. 21, 2007
7199168 Process for making cellular composites using polymeric isocyanates as binders for hollow filler particles Apr. 3, 2007
7129279 Lightweight tire support and composition and method for making a tire support Oct. 31, 2006
7078443 Viscoelastic foam layer and composition Jul. 18, 2006
7056958 Methods of production of high-strength black polyurethane foams Jun. 6, 2006
6979701 Thermoplastic polyurethane foam, process for production thereof and polishing pads made of the foam Dec. 27, 2005
6949589 Elastic foamed grinder material and method for producing the same Sep. 27, 2005
6878753 Process for producing polyurethane foam Apr. 12, 2005
6861453 Process for producing a urethane-modified polyisocyanurate foam Mar. 1, 2005
6855739 Modified polyurethane foamed materials used as adsorbents Feb. 15, 2005
6818675 Process for preparing polyurethane foam Nov. 16, 2004
6808800 Rigid polyurethane foam and heat insulating construction element comprising the same Oct. 26, 2004
6800715 Lightweight tire support and composition and method for making a tire support Oct. 5, 2004
6767929 Process for producing polyurethane Jul. 27, 2004
6765034 Flame-resistant and sound- and vibration-insulating member for vehicles, and process of manufacturing the same Jul. 20, 2004
6759363 Activators for the production of polyurethane foams Jul. 6, 2004
6740686 Process for the manufacture of polyurethane foam, amine polyesterpolyol used in this process and foam obtained May. 25, 2004
6649726 Two-component type polyurethane composition and process of preparing the same Nov. 18, 2003
6627671 Methods for making urethane molded products for polishing pads Sep. 30, 2003
RE38201 Amido functional amine catalysts for the production of polyurethanes Jul. 22, 2003
6590003 Method for producing soft to semi-rigid polyurethane integral foamed materials Jul. 8, 2003
6548616 Lightweight tire support and composition and method for making a tire support Apr. 15, 2003
6534555 Catalyst systems for polyurethane polyester foams Mar. 18, 2003
6495722 Mannich polyols for rigid spray foams Dec. 17, 2002
6458860 Advances in urethane foam catalysis Oct. 1, 2002
6455606 Polyurethane foam, process for producing the same, and foam forming composition Sep. 24, 2002
6455605 Foamable composition exhibiting instant thixotropic gelling Sep. 24, 2002
6433033 High-durability flexible polyurethane cold cure molded foam and process for producing the same Aug. 13, 2002
6433032 Process for rigid polyurethane foams Aug. 13, 2002
6420446 Polyurethane prepared from sorbitol-branched polyesters Jul. 16, 2002
6387972 Process to enhance polyurethane foam performance May. 14, 2002
6380274 Catalyst compositions for the production of polyurethanes Apr. 30, 2002
6362302 Method and compositions for spray molding polyurethane three dimensional objects Mar. 26, 2002
6355700 Foamed thermal insulating material and insulated structure Mar. 12, 2002
6346559 Polyurethane foam and associated process for production Feb. 12, 2002
6316513 Process for the producing of hard polyurethane foams with low heat conductivity Nov. 13, 2001
6303669 Flexible polyurethane foam Oct. 16, 2001
6288133 Foaming urethane composition and methods of using such compositions Sep. 11, 2001
6274639 High build polyurethane coating Aug. 14, 2001
6248801 Tertiary amine-containing active methylene compounds for improving the dimensional stability of polyurethane foam Jun. 19, 2001
6156814 Amido functional amine catalysts for the production of polyurethanes Dec. 5, 2000
6153659 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide for the production of polyurethanes Nov. 28, 2000
6136879 Soft polyurethane foam, method of producing the same and vehicle interior member using the same Oct. 24, 2000
6130267 Fire retardant compositions Oct. 10, 2000
6084001 High build polyurethane coating Jul. 4, 2000
6063824 Microcellular urea-containing polyurethane elastomer May. 16, 2000

1 2 3 4 5 6 7 8 9


 
 
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