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Class Information
Number: 521/173
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 > -xh reactant contains a c=x group, e.g., carboxylic acid ester, etc. > With non -c=x containing reactant
Description: Subject matter wherein in addition to the -N=C=X and containing reactant there is present a third reactant which is devoid of any group.










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

Patent Number Title Of Patent Date Issued
8686058 Natural resource based viscoelastic foams Apr. 1, 2014
8686057 Polyurethanes made from hydroxy-methyl containing fatty acids or alkyl esters of such fatty acids Apr. 1, 2014
8673991 Two-part curable polyurethane foam resin composition, molded article using the same, and shoe sole Mar. 18, 2014
8642670 Coarse-cell polyurethane elastomers Feb. 4, 2014
8637584 Polyester polyol-containing polyurethane systems having improved hydrolytic stability Jan. 28, 2014
8604093 Fire-resistant polyurethane foam and fabrication method thereof Dec. 10, 2013
8598297 Prepolymers made from hydroxymethyl-containing polyester polyols derived from fatty acids Dec. 3, 2013
8575226 Vegetable oil-based coating and method for application Nov. 5, 2013
8530533 Water-blown rigid foams for the insulation of liquefied natural gas tanks Sep. 10, 2013
8476328 Polishing pad Jul. 2, 2013
8476329 Bioresin composition for use in forming a rigid polyurethane foam article Jul. 2, 2013
8426482 Method for producing viscoelastic polyurethane flexible foams Apr. 23, 2013
8399532 Polyol compositions, resin blend compositions, spray compositions, and methods of using each, and methods of making each Mar. 19, 2013
8318827 Insect resistant polyurethane foam Nov. 27, 2012
8318822 Vibration damping and sound absorbing material and production process thereof Nov. 27, 2012
8318821 Rigid foamed synthetic resin and process for its production Nov. 27, 2012
8318826 Ortho-cyclohexanediamine-initiated polyols and rigid polyurethane foam made therefrom Nov. 27, 2012
8293808 Flexible polyurethane foams prepared using modified vegetable oil-based polyols Oct. 23, 2012
8288448 Polyurethane polishing pad Oct. 16, 2012
8247467 Process for producing flexible polyurethane foams Aug. 21, 2012
8236866 High resilience foams Aug. 7, 2012
8217093 Two-component polyurethane / vinyl ester hybrid foam system and its use as a flame retardant material and material for filling openings in buildings with foam Jul. 10, 2012
8217092 Multicomponent polyurethane/vinyl ester hybrid foam system and its use Jul. 10, 2012
8182909 Energy absorbing padding for sports application May. 22, 2012
8178593 Urethane formulation May. 15, 2012
8148440 Process for making rigid urethane-modified polyisocyanurate foams Apr. 3, 2012
8133930 Polyurethane foams made from hydroxymethyl-containing polyester polyols Mar. 13, 2012
8124665 Decorative molded foams with good impact resistance and fire retardant properties Feb. 28, 2012
8106143 Polycarbonate resin composition Jan. 31, 2012
8097658 Process for the production of medium density decorative molded foams having good fire retardant properties with reduced mold times, fire retardant compositions and foams produced by this proce Jan. 17, 2012
8067476 Foamed thermoplastic polyurethanes Nov. 29, 2011
8048935 Liquid foam systems and ASTM E-84 class 1 rated rigid, high-density polyurethane foams and articles prepared therefrom Nov. 1, 2011
8030366 Use of polyethers containing urethane for urea groups for stabilizing polyurethane foams Oct. 4, 2011
8003708 Process for making rigid polyurethane foams Aug. 23, 2011
7943678 Method for the preparation of new segmented polyurethanes with high tear and tensile strengths and method for making porous scaffolds May. 17, 2011
7812061 Process for the production of recycled polycarbonate as raw material for flame-retardant resin compositions and polycarbonate-base flame-retardant resin compositions Oct. 12, 2010
7750058 Process for preparing closed-cell water-blown rigid polyurethane foams having improved mechanical properties Jul. 6, 2010
7671104 Fine cell, water-blown rigid polyurethane foams Mar. 2, 2010
7666919 Aromatic diacid ester diols and substituted carbamates thereof for minimizing deterioration of polyurethane foams Feb. 23, 2010
7635723 Rigid foam compositions and methods employing alkyl alkanoates as a blowing agent Dec. 22, 2009
7615580 Ester alcohols and substituted carbamates thereof for minimizing deterioration of polyurethane foams Nov. 10, 2009
7576137 Molding made from polyurenthane Aug. 18, 2009
7414080 Polyurethane polishing pad Aug. 19, 2008
7393465 Hydrophobic polyols of low viscosity Jul. 1, 2008
7390867 Isocyanate adducts Jun. 24, 2008
7300961 Polyol compositions useful for preparing dimensionally stable, low density water-blown rigid foams and the processes related thereto Nov. 27, 2007
7262227 Process for producing synthetic resin foam, blowing agent and premix Aug. 28, 2007
7202284 Foamed thermoplastic polyurethanes Apr. 10, 2007
7183330 Silicone surfactants for rigid polyurethane foam made with hydrocarbon blowing agents Feb. 27, 2007
7160930 Water blown polyurethane spray foam system Jan. 9, 2007

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