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 two or more solid polymers or from at least one solid polymer and at least one polymer-forming system > Patents

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Class Information
Number: 521/134
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 two or more solid polymers or from at least one solid polymer and at least one polymer-forming system
Description: Subject matter involving a cellular product derived from mixed solid polymers or from a solid polymer and at least one polymer-forming system or process of preparing such a cellular product; compositions containing mixed solid polymers or a solid polymer and a polymer-forming system or processes of preparing and which are capable of forming a cellular product; processes of treating a cellular product derived from mixed solid polymers or from a solid polymer and a polymer-forming system with a material which neither reacts with the cellular product to change or modify chemical bonds therein or neither forms a desired composition with the cellular product or products of such a treatment; processes of treating a cellular product derived from mixed solid polymers or from a solid polymer and a polymer-forming system without the addition of a material thereto whereby a physical or chemical change in the cellular product may be effected or products which are the result of such a treatment.

Sub-classes under this class:

Class Number	Class Name	Patents
521/137	At least one polymer is derived from a -n=c=x reactant wherein x is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant	681
521/138	At least one polymer is derived from a polycarboxylic acid or derivative and a polyol or wherein the polymer-forming system containing the same type of reactants	293
521/136	At least one polymer is derived from an aldehyde or derivative or wherein the polymer-forming system contains the same type of reactant	172
521/139	At least one polymer is derived from an ethylenically unsaturated aromatic reactant or wherein the polymer-forming system contains the same type of reactant	523
521/140	At least one polymer is derived from reactant containing two or more ethylenic groups or wherein the polymer-forming system contains the same type of reactant	310
521/135	At least one polymer is derived from reactant containing two or more three membered heterocyclic rings having two carbon atoms and one chalcogen atom or polymer-forming system contains the same type of reactant	123

Patents under this class:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Patent Number	Title Of Patent	Date Issued
7439276	Froth and durable foam of dispersed olefin polymers, methods of making foam and articles prepared from same	Oct. 21, 2008
7439297	Foamable fluoropolymers compositions without using foaming agents	Oct. 21, 2008
7388036	Flexible polyurethane foam, process for its production, and seat for automobile employing it	Jun. 17, 2008
7368483	Porous composition of matter, and method of making same	May. 6, 2008
7361694	Durable foam of olefin polymers, methods of making foam and articles prepared from same	Apr. 22, 2008
7361693	Low density polymer beads	Apr. 22, 2008
7326738	Composition and process for forming a flexible polyurethane foam sealing device	Feb. 5, 2008
7300960	Expandable polypropylene resin particle and molded object obtained therefrom by in-mold molding	Nov. 27, 2007
7273894	Compositions for the preparation of void-containing articles	Sep. 25, 2007
7271202	Reactive hot melt adhesive	Sep. 18, 2007
7262226	CTFE-based thermoprocessable compositions	Aug. 28, 2007
7259189	Expanded polypropylene resin beads and process for the production thereof	Aug. 21, 2007
7226956	Low density polymeric foam using a three-polymer blend	Jun. 5, 2007
7199165	Expandable material	Apr. 3, 2007
7189763	Crosslinked olefin elastomer foam	Mar. 13, 2007
7189764	Elastomer composition for cross-linked olefin elastomer foam	Mar. 13, 2007
7173069	Polyolefin foams and methods of making the same	Feb. 6, 2007
7173070	Foam cushion and method of making and using the same	Feb. 6, 2007
7144925	Fire resistance acoustic foam	Dec. 5, 2006
7115673	Photosensitive resin composition, porous resin, circuit board, and wireless suspension board	Oct. 3, 2006
7112417	Foam composite for the repair or regeneration of tissue	Sep. 26, 2006
7109249	Composition containing a cross-linkable matrix precursor and a poragen, and porous matrix prepared therefrom	Sep. 19, 2006
7030167	Nanoporous structures produced from self-assembling molecules	Apr. 18, 2006
7005458	Static dissipative polyurethane foams	Feb. 28, 2006
6995191	Multi-layer golf ball with a foamed intermediate layer	Feb. 7, 2006
6992115	Preparation of crosslinked particles from polymers having activatible crosslinking groups	Jan. 31, 2006
6960619	Foamable photo-polymerized composition	Nov. 1, 2005
6956068	Microcellular foam dielectric for use in transmission lines	Oct. 18, 2005
6946495	Foamable composition using recycled or offgrade polypropylene	Sep. 20, 2005
6930133	Low density polymer beads	Aug. 16, 2005
6930132	Use of a polypropylene based composition for expanded beads	Aug. 16, 2005
6908949	Foamable interpolymer resin particles containing limonene as a blowing aid	Jun. 21, 2005
6908668	Foamed polyolefin resin sheet	Jun. 21, 2005
6890965	Foamed composites and methods for making same	May. 10, 2005
6890703	Preparation of crosslinked particles from polymers having activatible crosslinking groups	May. 10, 2005
6887912	Compatible linear and branched ethylenic polymers and foams therefrom	May. 3, 2005
6887910	Composition containing a cross-linkable matrix precursor and a poragen, and a porous matrix prepared therefrom	May. 3, 2005
6878754	Heat-induced gelling foaming composition and foam obtained	Apr. 12, 2005
6869980	Polymer blend membranes for use in fuel cells	Mar. 22, 2005
6855740	Foamed molded bodies made from silicon and use of said produced products	Feb. 15, 2005
6852763	Polyurethane foam compound for ink holder, ink holder, and method for ensuring close contact for ink holder	Feb. 8, 2005
6846225	Selective chemical-mechanical polishing properties of a cross-linked polymer and specific applications therefor	Jan. 25, 2005
6841583	Composition and uses thereof	Jan. 11, 2005
6841582	Thermoplastic elastomer composition, foam made from the same, and process for producing foam	Jan. 11, 2005
6818676	Foam cushion and method of making and using the same	Nov. 16, 2004
6812262	Silane-crosslinking expandable polyolefin resin composition and crosslinked foam	Nov. 2, 2004
6809125	Foam comprising polyolefin blend and method for producing same	Oct. 26, 2004
6806348	Process for removing and regenerating a double metal cyanide (DMC) catalyst from a polymer polyol	Oct. 19, 2004
6800668	Syntactic deformable foam compositions and methods for making	Oct. 5, 2004
6797737	Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer	Sep. 28, 2004