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Class Information
Number: 521/142
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 ethylenically unsaturated reactants only
Description: Subject matter involving a cellular polymer-derived from only reactants which contain ethylenic unsaturation or process of preparing; composition containing a polymer derived from only reactants containing ethylenic unsaturation or from polymerizable reactants containing only ethylenic unsaturation and which composition is capable of preparing a cellular product or processes of preparing same: processes of treating a cellular polymer derived from only ethylenic reactants with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein or neither forms a desired composition with the cellular polymer or products of such a treatment; processes of treating a cellular polymer derived from only ethylenic reactants without the addition of a material thereto whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7456228 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Nov. 25, 2008 |
| 7452920 |
Electronically and ionically conductive porous material and method for manufacture of resin wafers therefrom |
Nov. 18, 2008 |
| 7435761 |
Microporous polyethylene film and method of producing the same |
Oct. 14, 2008 |
| 7425583 |
Ion exchanger |
Sep. 16, 2008 |
| 7423071 |
Polypropylene based resin composition, expanded moldings comprising the same and method for production thereof |
Sep. 9, 2008 |
| 7390844 |
Polymer particle stabilized by dispersant and method of preparation |
Jun. 24, 2008 |
| 7361693 |
Low density polymer beads |
Apr. 22, 2008 |
| 7361694 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Apr. 22, 2008 |
| 7358281 |
Hollow polymer particles, aqueous dispersion thereof and production process thereof |
Apr. 15, 2008 |
| 7351752 |
Thermo-expansive microspheres, their production process and their application |
Apr. 1, 2008 |
| 7332531 |
Microporous high density polyethylene film |
Feb. 19, 2008 |
| 7323527 |
Process for macroporous acrylic resins |
Jan. 29, 2008 |
| 7312253 |
Insulating thermoplastic foams made with methyl formate-based blowing agents |
Dec. 25, 2007 |
| 7307105 |
Thermoplastic foams made with methyl formate-based blowing agents |
Dec. 11, 2007 |
| 7300960 |
Expandable polypropylene resin particle and molded object obtained therefrom by in-mold molding |
Nov. 27, 2007 |
| 7291382 |
Low density flexible resilient absorbent open-cell thermoplastic foam |
Nov. 6, 2007 |
| 7279504 |
Expandable vinylaromatic polymers and process for their preparation |
Oct. 9, 2007 |
| 7271202 |
Reactive hot melt adhesive |
Sep. 18, 2007 |
| 7262226 |
CTFE-based thermoprocessable compositions |
Aug. 28, 2007 |
| 7238765 |
High density polyethylene and insulation compositions for wire and cable |
Jul. 3, 2007 |
| 7226955 |
Macrocellular acoustic foam containing particulate additive |
Jun. 5, 2007 |
| 7214724 |
Method for cross-linking a foamable plastic |
May. 8, 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 |
| 7183332 |
Process for the preparation of porous polymers and polymers obtainable thereof |
Feb. 27, 2007 |
| 7176247 |
Interpenetrating polymer network |
Feb. 13, 2007 |
| 7173066 |
Ion exchanger |
Feb. 6, 2007 |
| 7163966 |
Superabsorbent polymer having increased rate of water absorption |
Jan. 16, 2007 |
| 7160939 |
Active masterbatch for production of CO2 generating masterbatch |
Jan. 9, 2007 |
| 7148264 |
Method of producing macroporous cross-linked polymer particles |
Dec. 12, 2006 |
| 7138436 |
Uncrosslinked foams made from emulsions |
Nov. 21, 2006 |
| 7094463 |
Foam and method of making |
Aug. 22, 2006 |
| 7064151 |
Process of microgel synthesis and products produced therefrom |
Jun. 20, 2006 |
| 7056957 |
Formation of strong superporous hydrogels |
Jun. 6, 2006 |
| 7026366 |
Thermoplastic elastomers having enhanced foaming an physical properties |
Apr. 11, 2006 |
| 7026364 |
Ion exchanger |
Apr. 11, 2006 |
| 6960617 |
Hydrogels having enhanced elasticity and mechanical strength properties |
Nov. 1, 2005 |
| 6930133 |
Low density polymer beads |
Aug. 16, 2005 |
| 6894082 |
Foamable compositions |
May. 17, 2005 |
| 6887912 |
Compatible linear and branched ethylenic polymers and foams therefrom |
May. 3, 2005 |
| 6884823 |
Injection molding of polymeric material |
Apr. 26, 2005 |
| 6822012 |
Peelable polymeric coating composition |
Nov. 23, 2004 |
| 6765031 |
Micropore open cell foam composite and method for manufacturing same |
Jul. 20, 2004 |
| 6759445 |
Foam material comprising linear, isotactic polymers |
Jul. 6, 2004 |
| 6759080 |
Process for making foams by photopolymerization of emulsions |
Jul. 6, 2004 |
| 6756428 |
Degradable plastics possessing a microbe-inhibiting quality |
Jun. 29, 2004 |
| 6727291 |
Preparation of expandable propylene polymer beads |
Apr. 27, 2004 |
| 6720364 |
Elastomeric composition for preparing olefinic elastomer crosslinked foam and use thereof |
Apr. 13, 2004 |
| 6713522 |
Peelable foam coating composition |
Mar. 30, 2004 |
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