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Class Information
Number: 568/617
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Ethers > Plural oxyalkylene groups bonded directly to each other > Acyclic > Polytetramethylene glycols
Description: Compounds which contain two or more oxytetramethylene moieties terminated by hydroxy groups.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7544766 |
Method for the polymerization of cyclic ethers |
Jun. 9, 2009 |
| 7528287 |
Preparation of poly(tetramethylene) glycol |
May. 5, 2009 |
| 7402711 |
Preparation of poly(tetramethylene) glycol |
Jul. 22, 2008 |
| 7342142 |
Hydrogenation of polytrimethylene ether glycol |
Mar. 11, 2008 |
| 7276573 |
Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers |
Oct. 2, 2007 |
| 7071364 |
Branched primary alcohol compositions and derivatives thereof |
Jul. 4, 2006 |
| 6989432 |
Copolymers of tetrahydrofuran, ethylene oxide and an additional cyclic ether |
Jan. 24, 2006 |
| 6987201 |
Acetic anhydride, method of purifying crude acetic anhydride, and method of producing polyoxytetramethylene glycol using acetic anhydride |
Jan. 17, 2006 |
| 6979752 |
Continuous process for converting polytetramethylene ether diester to polytetramethylene ether glycol |
Dec. 27, 2005 |
| 6972317 |
Monohydric polyfluorooxetane polymer and radiation curable coatings containing a monofunctional polyfluorooxetane polymer |
Dec. 6, 2005 |
| 6891013 |
Fluorinated polyurethane elastomers prepared from polyether prepolymers formed from mono-substituted fluorinated oxetane monomers and tetrahydrofuran |
May. 10, 2005 |
| 6858757 |
Process for preparing perfluoropolyoxyalkylenes with -OCF2H, -OCF2CF2H and -OCF(CF3)H end groups |
Feb. 22, 2005 |
| 6780928 |
Polyoxyalkylene monoalkyl ether, process for producing the same, polymerizable polyoxyalkylene monoalkyl ether derivative, polymer of said derivative and dispersant comprising said polymer |
Aug. 24, 2004 |
| 6699961 |
DMC complex catalyst and process for its preparation |
Mar. 2, 2004 |
| 6680406 |
Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide |
Jan. 20, 2004 |
| 6586564 |
Double-metal cyanide catalysts for preparing polyether polyols |
Jul. 1, 2003 |
| 6570041 |
Polyoxytetramethylene glycol and process for producing the same |
May. 27, 2003 |
| 6566563 |
Method for producing compounds with terminal OH groups |
May. 20, 2003 |
| 6559278 |
Method for producing tetrahydrofuran polymers |
May. 6, 2003 |
| 6414109 |
Process for producing tetrahydrofuran polymer |
Jul. 2, 2002 |
| 6403842 |
Processes for producing poly(alkylene ether) glycol |
Jun. 11, 2002 |
| 6395938 |
Method of regulating molecular weight distribution of polyether glycol |
May. 28, 2002 |
| 6380351 |
Copolymers and coprepolymers formed from mono-substituted fluorinated oxetane monomers and tetrahydrofuran |
Apr. 30, 2002 |
| 6362312 |
Catalyst and method for the production of polytetrahydrofuran |
Mar. 26, 2002 |
| 6359108 |
Method for polymerizing cyclic ether |
Mar. 19, 2002 |
| 6355846 |
Narrowing of poly (tetramethylene ether) glycol |
Mar. 12, 2002 |
| 6313060 |
Catalyst for ring-opening polymerization of alkylene oxide, method for preparation thereof and use thereof |
Nov. 6, 2001 |
| 6291714 |
Continuous process for effecting gas liquid reactions |
Sep. 18, 2001 |
| 6211401 |
Process for preparing polytetrahydrofuran |
Apr. 3, 2001 |
| 6204357 |
Double metal cyanide catalysts for preparing poly-etherpolyols |
Mar. 20, 2001 |
| 6111147 |
Process for preparing polytetrahydrofuran and derivatives thereof |
Aug. 29, 2000 |
| 6087460 |
Organo-Lewis acid as cocatalyst for cationic homogenous metallocene Ziegler-Natta olefin polymerizations |
Jul. 11, 2000 |
| 6069226 |
Process for the preparation of polytetramethylene ether glycol diester using an aluminosilicate type catalyst |
May. 30, 2000 |
| 6040413 |
Composition of polytetramethylene ether glycols and polyoxy alkylene polyether polyols having a low degree of unsaturation |
Mar. 21, 2000 |
| 6028229 |
Process for producing end-group-locked non-ionic tensides |
Feb. 22, 2000 |
| 5962727 |
Method for manufacturing diacetate esters of polytetramethylene ethers |
Oct. 5, 1999 |
| 5951829 |
Separation of heteropoly compounds from polyethers, polyesters and polyether esters |
Sep. 14, 1999 |
| 5939590 |
Tetrahydrofuran/but-2-yne-1, 4-diol copolymers containing C-C triple bonds |
Aug. 17, 1999 |
| 5907054 |
Process for the polymerization of cyclic ether |
May. 25, 1999 |
| 5892130 |
Oxyalkylene-modified polyoxybutylene alcohols |
Apr. 6, 1999 |
| 5886138 |
Process for the preparation of tetrahydrofuran polymers |
Mar. 23, 1999 |
| 5852218 |
Alkanolysis of polyether polyol esters by reactive distillation |
Dec. 22, 1998 |
| 5773648 |
Preparation of polytetrahydrofuran |
Jun. 30, 1998 |
| 5741946 |
Polyether lubricants and method for their production |
Apr. 21, 1998 |
| 5731476 |
Poly ether preparation |
Mar. 24, 1998 |
| 5714638 |
Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product |
Feb. 3, 1998 |
| 5703194 |
Fluorinated thermoset polyurethane elastomers prepared from polyether coprepolymers formed from mono-substituted fluorinated oxetane monomers and tetrahydrofuran |
Dec. 30, 1997 |
| 5686379 |
Alkoxylation catalyst, process for the preparation of the catalyst and process for preparing alkoxylate with the use of the catalyst |
Nov. 11, 1997 |
| 5684096 |
Adducts of polyalkylene glycol and diglycidyl ether |
Nov. 4, 1997 |
| 5668251 |
Preparation of co-prepolymers from mono-substituted fluorinated monomers and tetrahydrofuran |
Sep. 16, 1997 |
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