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Class Information
Number: 521/910
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Plural blowing agents for producing nonpolyurethane cellular products
Description: Subject matter involving preparing a nonpolyurethane cellular product by utilizing two or more distinct blowing agents either together or at different times.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7705056 Aerosol adhesive and canister-based aerosol adhesive system Apr. 27, 2010
7597818 Azeotrope-like compositions of tetrafluoropropenes and bromofluoropropenes Oct. 6, 2009
6960619 Foamable photo-polymerized composition Nov. 1, 2005
6902693 Expanded porous thermoplastic polymer membranes and method for the production thereof Jun. 7, 2005
6696504 Extruded styrene resin foams, and methods for producing the same Feb. 24, 2004
6545062 Production of water-expandable styrene polymers Apr. 8, 2003
6423757 Process for producing polymer foam using mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms Jul. 23, 2002
6350789 Extruded foam product with 134a and alcohol blowing agent Feb. 26, 2002
6303667 Foaming agents containing liquid carbon dioxide Oct. 16, 2001
6245823 Composition and blowing agent for making foamed polyethylene material Jun. 12, 2001
6225364 Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making May. 1, 2001
6030696 Extruded polyolefin foam in thicker grades and plank and process therefor Feb. 29, 2000
6013689 Method for making a closed-cell phenolic resin foam, foamable composition, and closed-cell phenolic resin foam Jan. 11, 2000
5840212 Rigid foams with improved insulation properties and a process for the production of such foams Nov. 24, 1998
5800729 Mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms Sep. 1, 1998
5762817 Decafluoropentane compositions Jun. 9, 1998
5762818 Compositions which include 1,1,2,2- tetrafluoroethane and fluoroethane Jun. 9, 1998
5733472 Compositions which include 1,1,2,2-tetrafluoroethane and fluoropropane Mar. 31, 1998
5730894 1,1,2,2,3,3,4,4-octafluorobutane azeotropic (like) compositions Mar. 24, 1998
5728315 Azeotrope-like compositions of trifluoromethane, carbon dioxide, ethane and hexafluoroethane Mar. 17, 1998
5723509 Azeotrope-like compositions of dimethoxymethane, cyclopentane and 2-methyl pentane and the use thereof in the production of foams Mar. 3, 1998
5609954 Strippable pressure-sensitive adhesive and adhesive material using the same Mar. 11, 1997
5605647 Fluoroiodocarbon blends as CFC and halon replacements Feb. 25, 1997
5562857 Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 2-methyl butane Oct. 8, 1996
5562861 Fluoroiodocarbon blends as CFC and halon replacements Oct. 8, 1996
5475037 Amorphous polyester foam Dec. 12, 1995
5462974 Expandable composition and process for extruded thermoplastic foams Oct. 31, 1995
5453454 Production of foam boards of high compressive strength from styrene polymers Sep. 26, 1995
5444102 Fluoroiodocarbon blends as CFC and halon replacements Aug. 22, 1995
5409962 Substantially constant boiling blowing agent compositions of 1,1,1,2-tetrafluoroethane and dimethyl ether Apr. 25, 1995
5405883 Ethylene polymer foams blown with isobutane and 1,1-difluoroethane and a process for making Apr. 11, 1995
5399592 Ethylene polymer foams blown with isobutane and 1,1,1-trifluoroethane or 1,1,1,2-tetrafluoroethane and a process for making Mar. 21, 1995
5389694 Foamable styrenic polymer gel having a carbon dioxide blowing agent and a process for making a foam structure therefrom Feb. 14, 1995
5380767 Foamable gel with an aqueous blowing agent expandable to form a unimodal styrenic polymer foam structure and a process for making the foam structure Jan. 10, 1995
5348984 Expandable composition and process for extruded thermoplastic foams Sep. 20, 1994
5314926 Hydrofluorocarbon compositions as blowing agents for cellular plastics May. 24, 1994
5300534 Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose Apr. 5, 1994
5296516 Polyurethane and polyisocyanurate rigid foams prepared using ternary blowing agent mixtures Mar. 22, 1994
RE34568 Volatile foaming agent composition Mar. 22, 1994
5294358 Compositions containing 1,1,1,2-tetrafluoroethane and methyl chloride and use of these compositions Mar. 15, 1994
5286757 Foamable composition and process for making large cell size alkenyl aromatic polymer foam structure with 1,1-difluoroethane Feb. 15, 1994
5276063 Foamable composition and process for making large cell size alkenyl aromatic polymer foam structure with 1,1-difluoroethane Jan. 4, 1994
5266251 Method for the manufacture of a heat insulating foamed plastic material and blowing agent to be used by the method Nov. 30, 1993
5244928 Foamable composition and process for making large cell size alkenyl aromatic polymer foam structure with 1,1-difluoroethane Sep. 14, 1993
5244927 Low density styrene polymer foams and process for preparing same Sep. 14, 1993
5221492 Azeotropic mixture of perfluoropropane and dimethyl ether Jun. 22, 1993
5185094 Constant boiling compositions of pentafluoroethane, difluoromethane, and tetrafluoroethane Feb. 9, 1993
5182040 Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane Jan. 26, 1993
5180753 Process for the manufacture of synthetic polymer propellant systems Jan. 19, 1993
5162381 Process for preparing thermalplastic foam Nov. 10, 1992

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