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Class Information
Number: 521/49
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Process of treating scrap or waste product containing solid organic polymer to recover a solid polymer therefrom > Treating polyurethane, polyurea (excluding urea-formaldehyde polymers), polyisocyanurate or polycarbodiimide
Description: Subject matter wherein the scrap or waste product contains either a polyurethane, polyurea, polylsocyanurate, or a polycarbodimide.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7452918 |
Recycled plastic material, electronic apparatus having the recycled plastic material, method of manufacturing plastic part, method of manufacturing the recycled plastic material, and method of |
Nov. 18, 2008 |
| 7141647 |
Image file arrangement for use with an improved image quality assurance system |
Nov. 28, 2006 |
| 7138435 |
Method of decomposing thermosetting resin, apparatus and heat control program |
Nov. 21, 2006 |
| 7056956 |
Method for recycling a plastic material |
Jun. 6, 2006 |
| 7022751 |
Composite plastic materials produced from waste materials and method of producing same |
Apr. 4, 2006 |
| 6919383 |
CO2-assisted deploymerization, purification and recycling of step-growth polymers |
Jul. 19, 2005 |
| 6837950 |
Separation of floor covering components for recycling |
Jan. 4, 2005 |
| 6822009 |
Method for reclaiming waste cured resin |
Nov. 23, 2004 |
| 6802997 |
Method of manufacturing rigid polyurethane foam material, method of manufacturing refrigerator, and refrigerator |
Oct. 12, 2004 |
| 6750260 |
Process for chemical recycling of polyurethane-containing scrap |
Jun. 15, 2004 |
| 6723759 |
Recycled resin composition and method for producing the same |
Apr. 20, 2004 |
| 6683119 |
Method for producing polyols and polyols |
Jan. 27, 2004 |
| 6670404 |
Polymeric foam powder processing techniques, foam powders products, and foams produced containing those foam powders |
Dec. 30, 2003 |
| 6660779 |
Method of manufacturing rigid polyurethane foam material, method of manufacturing refrigerator, and refrigerator |
Dec. 9, 2003 |
| 6630517 |
Process for hydrolyzing and recycling a polyurethane |
Oct. 7, 2003 |
| 6515036 |
Method of decomposing a polyurethane |
Feb. 4, 2003 |
| 6489373 |
Method for decomposition and recovery of polyurethane resin |
Dec. 3, 2002 |
| 6384093 |
Method of melt processing crosslinked thermoplastic material |
May. 7, 2002 |
| 6306222 |
Process for cleaning plastics for recycling them |
Oct. 23, 2001 |
| 6245822 |
Method and apparatus for decomposition treating article having cured thermosetting resin |
Jun. 12, 2001 |
| 6172126 |
Cosolvent-free, aqueous, anionic polyurethane dispersions and their use as peelable coatings |
Jan. 9, 2001 |
| 6156811 |
Molded polyurethane articles prepared from recycled polyols and processes for their production and use |
Dec. 5, 2000 |
| 6087409 |
Production of rigid polyurethane foams |
Jul. 11, 2000 |
| 6069182 |
Recycling of plastic waste containing a mixture of polyurethanes with other plastics |
May. 30, 2000 |
| 6020386 |
Process for the production of hydroxyfunctional compounds from (polyurethane) polyurea waste |
Feb. 1, 2000 |
| 6017970 |
Method for recycling discarded articles |
Jan. 25, 2000 |
| 6013685 |
Process for recycling packings |
Jan. 11, 2000 |
| 5973013 |
Polyamide/polyurethane micro-blend and process |
Oct. 26, 1999 |
| 5958988 |
Cross-linked polyurethane resin powder and process for producing the same |
Sep. 28, 1999 |
| 5908894 |
Thermoplastic polyurethanes and their preparation |
Jun. 1, 1999 |
| 5891927 |
Recycling of microcellular polyurethanes |
Apr. 6, 1999 |
| 5859167 |
Cured polyester plastic compositions derived from recycled polyurethanes |
Jan. 12, 1999 |
| 5849804 |
Recovery of polyamides from composite articles |
Dec. 15, 1998 |
| 5840773 |
Process for recovering and recycling polyamide from carpet waste |
Nov. 24, 1998 |
| 5814674 |
Method for processing residue-containing packages |
Sep. 29, 1998 |
| 5721280 |
Method for depolymerizing polyimides and recovering reagents therefrom |
Feb. 24, 1998 |
| 5716996 |
Method for the recovery of secondary polyols from paint sludges |
Feb. 10, 1998 |
| 5714523 |
Process for hydrolysing polyurethane degradation products |
Feb. 3, 1998 |
| 5691389 |
Recycling of flexible foam |
Nov. 25, 1997 |
| 5691388 |
Method of decomposing polycyanurate-containing materials |
Nov. 25, 1997 |
| 5684054 |
Process for recovering secondary polyols from polyadducts mixed with nonglycolysable materials |
Nov. 4, 1997 |
| 5677355 |
Continuous open-cell polymeric foams containing living cells |
Oct. 14, 1997 |
| 5672631 |
Method for processing packaging remnants with recovery of materials |
Sep. 30, 1997 |
| 5668189 |
Foamed polymer and process for production thereof |
Sep. 16, 1997 |
| 5654344 |
Production of rigid to semirigid polyurethane foams having an increased proportion of open cells and reduced shrinkage |
Aug. 5, 1997 |
| 5651994 |
Elastic paving material |
Jul. 29, 1997 |
| 5648430 |
Curable fluoroelastomeric compositions |
Jul. 15, 1997 |
| 5648431 |
Process for the utilization of plastics |
Jul. 15, 1997 |
| 5635542 |
Process for the production of hydroxyl-group-containing compounds from polyurethane polyurea and/or polyurea wastes |
Jun. 3, 1997 |
| 5616623 |
Process for the decompostion of polyurethane plastics |
Apr. 1, 1997 |
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