ClassID:

99484

C08G65/30 - CPC Classification

Classification description:

Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring Post-polymerisation treatment, e.g. recovery, purification, drying

Recent Application in this class:
#1
20250353956
2025-11-20

METHOD FOR THE MANUFACTURE OF A POLYETHER DIOL PRODUCT

#2
20250179246
2025-06-05

A LIQUID-LIQUID EXTRACTION METHOD FOR SEPARATING CARBOXYLATE MONOFUNCTIONAL PERFLUOROPOLYETHERS AND CARBOXYLATE DIFUNCTIONAL PERFLUOROPOLYETHERS

#3
20250136757
2025-05-01

A PROCESS FOR OBTAINING A POLYETHER POLYOL WITH A BIMODAL MOLECULAR WEIGHT DISTRIBUTION, FOR THE PRODUCTION OF FLEXIBLE POLYURETHANE FOAMS

#4
20250136756
2025-05-01

PROCESS FOR THE SYNTHESIS OF POLYEPICHLOROHYDRIN

#5
20240199840
2024-06-20

Method For The Production Of A Polyhydric Alcohol From A Urethane Containing Polymer

#6
20230103242
2023-03-30

METHOD FOR PRODUCING POLYMER

#7
20230088981
2023-03-23

Method for producing polyalkylene oxide and polyalkylene oxide

#8
20230082443
2023-03-16

Method for producing polyalkylene oxide

#9
20230054287
2023-02-23

PREPARATION PROCESS OF ALLYL ALCOHOL POLYETHER WITH LOW POTASSIUM AND SODIUM CONTENT

#10
20230050758
2023-02-16

Method for purifying polyethylene glycol compound

#11
20230039790
2023-02-09

Immobilization Of Phenolic Compounds

#12
20220363824
2022-11-17

METHOD FOR PURIFYING BRANCHED POLYETHYLENE GLYCOL

#13
20220227929
2022-07-21

Process for purifying polyether polyols

#14
20220162379
2022-05-26

PROCESS AND SYSTEM FOR PRODUCING LOW-ODOR POLYETHER POLYOL

#15
20220153683
2022-05-19

Method for producing hetero-type monodisperse polyethylene glycol derivative

#16
20220089814
2022-03-24

Process for preparing a copolymer polyol

#17
20220089813
2022-03-24

Purification process for polyether-carbonate polyols

#18
20220056208
2022-02-24

Polyalkylene ether glycol composition and method for producing the same

#19
20210388161
2021-12-16

Method of making releasable polymeric reagents

#20
20210371587
2021-12-02

Methods of preparing a poloxamer for use in cell culture medium

#21
20210363298
2021-11-25

SEPARATING A DOUBLE METAL CYANIDE CATALYST

#22
20210347941
2021-11-11

METHOD FOR PREPARING FUNCTIONALIZED POLYMERS FROM POLYMER ALCOHOLS

#23
20210253791
2021-08-19

Methods for purifying polyols containing oxyalkylene units to reduce 2-methyl-2-pentenal content

#24
20210221951
2021-07-22

Method for the production of polyether polyols

#25
20210189290
2021-06-24

ALKOXYLATED PHENOL DERIVATIVES

#26
20210171426
2021-06-10

PROCESS FOR PRODUCING POLYOL

#27
20210130544
2021-05-06

PROCESSES FOR PURIFYING POLYETHER POLYOLS

#28
20210009756
2021-01-14

Method for purifying trityl group-containing monodispersed polyethylene glycol

#29
20200087452
2020-03-19

LOW ODOR POLYETHER POLYOL AND PREPARATION THEREOF

#30
20200055983
2020-02-20

Poloxamer composition free of long circulating material and methods for production and uses thereof

#31
20200010618
2020-01-09

A PROCESS FOR PURIFICATION OF POLYETHER BLOCK COPOLYMERS

#32
20200010617
2020-01-09

PROCESSES AND SYSTEMS FOR REMOVING WATER AND SALT FROM A NEUTRALIZED POLYETHER POLYOL

#33
20190309120
2019-10-10

Polyether polyol production method and polyurethane foam production method

#34
20190185621
2019-06-20

Method for separating perfluoro(poly)ether-group-containing alcohol compounds

#35
20190106369
2019-04-11

Processing Base-Catalysed Alkoxylation Products

#36
20190085125
2019-03-21

Method for purifying poloxamers

#37
20190077910
2019-03-14

ELECTRICALLY CONDUCTIVE POLYMER COMPOSITION AND APPLICATION

#38
20190055354
2019-02-21

Methods for preparing functionalized polymers from polymer alcohols

#39
20190023841
2019-01-24

Methods of preparing and purifying polyalkylene glycol derivative

#40
20180353875
2018-12-13

A PROCESS FOR PURIFICATION OF POLYETHER BLOCK COPOLYMERS

#41
20180327554
2018-11-15

Biocompatible nanoparticle and use thereof

#42
20180282476
2018-10-04

Method of preparing carboxylic acid functionalized polymers

#43
20180273682
2018-09-27

Purification of crude polyalkylene oxide polymers with acid functionalized silicas and metal silicates

#44
20180244843
2018-08-30

Process for purification of crude polyether polyols

#45
20180230268
2018-08-16

Process for producing hydrosilylable polyoxyalkylene ethers

#46
20180086912
2018-03-29

Monomer composition containing unsaturated polyalkylene glycol ether-based monomer, method for producing composition thereof, polymer obtained using composition thereof, and method for producing polymer thereof

#47
20180022855
2018-01-25

Bio-based and hydrophilic polyurethane prepolymer and foam made therefrom

#48
20170369647
2017-12-28

Processes for removing water from a polyether polyol

#49
20170327813
2017-11-16

3D printable hydrogel materials

#50
20170313818
2017-11-02

Process for preparing polymers

#51
20170253698
2017-09-07

Polyether polyol, method for producing polyether polyol, polyester elastomer and polyurethane

#52
20170073468
2017-03-16

Method for preparing functionalized polymers from polymer alcohols

#53
20170009015
2017-01-12

Methods of preparing a poloxamer for use in cell culture medium

#54
20170002141
2017-01-05

Poloxamer composition free of long circulating material and methods for production and uses thereof

#55
20160369051
2016-12-22

Method for working up alkaline polyether polyols

#56
20160369050
2016-12-22

Method for producing oxymethylene copolymer

#57
20160326455
2016-11-10

Perfluoropolyether extraction processes

#58
20160326316
2016-11-10

IMPROVED POLYTETRAMETHYLENE ETHER GLYCOL MANUFACTURING PROCESS

#59
20160319216
2016-11-03

Recovery of perfluorinated polyether oils from grease matrices incorporating extraction aids by carbon dioxide extraction

#60
20160319067
2016-11-03

Copolyether ester polyol process

#61
20160264730
2016-09-15

Production method of medical polyoxypropylene polymer and production method of medical polyoxypropylene/polyoxyethylene block copolymer

#62
20160159978
2016-06-09

Single column stripping and drying process

#63
20160046762
2016-02-18

Method for purifying polyethylene glycol having one amino group

#64
20160002401
2016-01-07

Poloxamer composition free of long circulating material and methods for production and uses thereof

#65
20150376333
2015-12-31

Method for extracting oil from a powder

#66
20150375180
2015-12-31

Separation of nanoparticles

#67
20150291790
2015-10-15

Method for preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal

#68
20150251107
2015-09-10

Process for the purification of (per) fluoropolyethers with carboxylate end groups

#69
20150218311
2015-08-06

Method for preparing a composition comprising perfluoropolyether having a carboxyl group at one terminal

#70
20150191567
2015-07-09

TETRAHYDROFURAN PURGE TREATMENT PROCESS

#71
20150133696
2015-05-14

Process for the production of polyether polyols

#72
20150045455
2015-02-12

Co-precipitation method

#73
20140350216
2014-11-27

Process for producing a cyclic acetal in a heterogeneous reaction system

#74
20140343301
2014-11-20

Process for producing a cyclic acetal

#75
20140343300
2014-11-20

Process for the production of trioxane from aqueous formaldehyde sources

#76
20140329988
2014-11-06

Integrated process for producing cyclic acetals and oxymethylene polymers

#77
20140323686
2014-10-30

Process for Recycling A Formaldehyde Source During A Polymerization Process

#78
20140316147
2014-10-23

Process for the production of trioxane

#79
20140303405
2014-10-09

Product recovery process in the filtration of polyether polyols

#80
20140275635
2014-09-18

Process for enriching the difunctional content of (per) fluopolyether mixtures

#81
20140243560
2014-08-28

Process for preparing polyether polyols

#82
20140243559
2014-08-28

Process for preparing polyether polyols

#83
20140213828
2014-07-31

Polymer recovery process in the filtration of polyether polyols

#84
20140142345
2014-05-22

Alkoxylation of crude bisphenol A

#85
20140080938
2014-03-20

Polymer compounds having coupled components

#86
20140001402
2014-01-02

Miscibility of otherwise immiscible compounds

#87
20130345476
2013-12-26

Process for the production of low molecular weight impact polyethers

#88
20130338331
2013-12-19

Method for the preparation of polyether polyols

#89
20130281723
2013-10-24

Processes for preparing polytrimethylene ether glycol esters

#90
20130281634
2013-10-24

Method of preparing carboxylic acid functionalized polymers

#91
20130274421
2013-10-17

HIGHLY PURE POLOXAMERS AND PURIFICATION METHOD THEREOF

#92
20130184420
2013-07-18

Monomer composition containing unsaturated polyalkylene glycol ether-based monomer, method for producing composition thereof, polymer obtained using composition thereof, and method for producing polymer thereof

#93
20130046116
2013-02-21

INTEGRATED COPOLYETHER GLYCOL MANUFACTURING PROCESS

#94
20120279082
2012-11-08

Single Column Stripping and Drying Process

#95
20120259090
2012-10-11

Copolyether glycol manufacturing process

#96
20120251479
2012-10-04

Reduced-Odor Polyol Composition And Method Of Producing Same

#97
20120184705
2012-07-19

METHOD FOR PRODUCING POLYOLS CONTAINING AMINO GROUPS

#98
20120130134
2012-05-24

PROCESS FOR THE PREPARATION OF POLYETHEROLS FROM ALKYLENE OXIDES

#99
20120078018
2012-03-29

Process for neutralizing an unneutralised polyether polyol

#100
20120059144
2012-03-08

Process for the purification of polyol PFPE derivatives

#101
20120059130
2012-03-08

CURABLE COMPOSITIONS CONSISTING OF SILANES WITH THREE HYDROLYSABLE GROUPS

#102
20120055779
2012-03-08

Process for the purification of polyol PFPE derivatives

#103
20120041155
2012-02-16

Method of Preparing Carboxylic Acid Functionalized Polymers

#104
20110257339
2011-10-20

METHOD FOR STABILIZING POLYMERS

#105
20110224401
2011-09-15

APPARATUS FOR SEPARATION BY DISTILLATION

#106
20110144281
2011-06-16

AMPHIPHILIC POLYMERS HAVING A CHOLANE CORE

#107
20110130539
2011-06-02

Method of preparing carboxylic acid functionalized polymers

#108
20110112332
2011-05-12

PROCESS FOR INCREASING THE COALESCENCE RATE FOR AMINE-INITIATED POLYETHERS

#109
20110105714
2011-05-05

Method for producing polyols

#110
20110021738
2011-01-27

METHOD FOR THE PRODUCTION OF POLYOLS

#111
20110003968
2011-01-06

Process for the purification of polyol PFPE derivative

#112
20100331480
2010-12-30

HARDENABLE COMPOSITIONS CONTAINING SOFT-ELASTIC SILYLATED POLYURETHANES

#113
20100324261
2010-12-23

Highly functional polyetherols and the production and use thereof

#114
20100323452
2010-12-23

Process for purification of water soluble polymers

#115
20100311996
2010-12-09

Process for producing polyoxyethylene sorbitan fatty acid ester

#116
20100311986
2010-12-09

PREPARING METHOD OF METHOXYPOLYETHYLENEGLYCOL ETHYLMALEIMIDE

#117
20100305018
2010-12-02

ESTERIFIED ALKYL ALKOXYLATES AS SOLID LOW-FOAM WETTERS

#118
20100292515
2010-11-18

Purification method of high-molecular-weight polyethylene glycol compound

#119
20100288167
2010-11-18

LOW DIOL CONTENT MONOFUNCTIONAL ALKOXYPOLYALKYLENE GLYCOLS AND PROCESS FOR PRODUCING THEM

#120
20100286361
2010-11-11

Purification method of high-molecular-weight polyoxyalkylene derivative

#121
20100264365
2010-10-21

Miscibility of otherwise immiscible compounds

#122
20100233264
2010-09-16

Temperature and pH-sensitive block copolymer having excellent safty in vivo and hydrogel and drug delivery system using thereof

#123
20100216950
2010-08-26

Curable compositions consisting of silanes with three hydrolysable groups

#124
20100216894
2010-08-26

Compounds prepared by adding an oxetane derivative to an alcohol

#125
20100204387
2010-08-12

Curable compositions composed of silanes with two hydrolyzable groups

#126
20100179240
2010-07-15

Process for producing flexible polyurethane foam, process for producing hot press molded product, and hot press molded product

#127
20100121111
2010-05-13

Alkoxylations of High Melting Point Substrates in Ketone Solvents

#128
20100041160
2010-02-18

ANALYSIS OF HIGH MOLECULAR WEIGHT MPEG ALCOHOL COMPOSITIONS

#129
20090286940
2009-11-19

Hyperbranched polyether polyol and urethane resin composition

#130
20090275702
2009-11-05

Moisture curable polymer having SiF group, and curable composition containing the same

#131
20090227695
2009-09-10

Autocatalytic polyols

#132
20090203875
2009-08-13

Process for purifying polyether

#133
20090143625
2009-06-04

Process for the preparation of polyether polyols

#134
20090093569
2009-04-09

Dispersant and compositions thereof

#135
20090048420
2009-02-19

Process for the preparation of polyols

#136
20090036644
2009-02-05

METHOD OF REMOVING RESIDUAL ETHYLENE OXIDE MONOMER IN POLYETHYLENE OXIDE

#137
20080269449
2008-10-30

Methods for the purification of polymers

#138
20080214732
2008-09-04

Process for the preparation of arylene fluorinated sulfonimide polymers and membranes

#139
20080125563
2008-05-29

Process for production of polyethers and polymers

#140
20080125562
2008-05-29

Process for Production of Polyether Polymers and Compositions Containing the Polymers

#141
20080090991
2008-04-17

Preparing method of methoxypolyethyleneglycol and its derivatives

#142
20080033214
2008-02-07

Process of Preparing Odour-Lean Polyether Polyol

#143
20080033139
2008-02-07

Process for stripping polymer polyols

#144
20080033128
2008-02-07

Method for producing polyether

#145
20070185307
2007-08-09

Reduced oligomer concentration in high purity polyalkylene glycols

#146
20070173634
2007-07-26

Methods for one-step purification of organic polymers using tangential flow filtration

#147
20070173631
2007-07-26

Oxytetramethylene glycol copolymer and method for producing the same

#148
20070112173
2007-05-17

Method and device for the continuous production of polymer

#149
20070004901
2007-01-04

Chemical process

#150
20060276620
2006-12-07

Process for manufacturing a pellet-shaped nonionic alkylene oxide resin

#151
20060266635
2006-11-30

Method for obtaining oligomers of polytetrahydofurane or tetrahydrofurane

#152
20060199939
2006-09-07

Process for producing polyether polymer composition, polyether polymer composition, and solid electrolyte film

#153
20060167209
2006-07-27

Production of polyether alcohols by usig dmc catalysis

#154
20060116275
2006-06-01

Process for removing and regenerating a double metal cyanide (dmc) catalyst from a polymer polyol

#155
20060069006
2006-03-30

Polyethylene glycol and alcohol ethoxylates and their preparation

#156
20060065600
2006-03-30

Processes for recovering oligomers of glycols and polymerization catalyst from waste streams

#157
20060045866
2006-03-02

Novel high purity and high molecular weight mPEG alcohol compositions

#158
20060009660
2006-01-12

Separation of bifunctional perfluoropolyethers (PFPEs) having -CHOH termination from their mixtures with -CHOH monofunctional PFPEs

#159
20050245410
2005-11-03

Water soluble nonionic alkylene oxide resin, and production process therefor

#160
20050222380
2005-10-06

Method of purifying polyether polyols of non-volatile impurities

#161
20050215831
2005-09-29

Method for the preparation of polyether alcohols

#162
20050214250
2005-09-29

Method of preparing carboxylic acid functionalized polymers

#163
20050211956
2005-09-29

Method for drying nonionic alkylene oxide-type water-soluble resin, method for packaging it, and method for transporting it

#164
20050182238
2005-08-18

Method for producing polytetrahydrofurane having a low color indices

#165
20050095221
2005-05-05

Purified polyoxypropylene/polyoxyethylene copolymers and method of preparing the same

#166
20050074686
2005-04-07

Perfluoropolyethers

#167
20050054816
2005-03-10

Method for preparing functionalized polymers from polymer alcohols

#168
20050009695
2005-01-13

High-purity polyalkylene glycols and preparation thereof

#169
19094550
2025-06-10

Preparation method for biobased polyurethane elastic fibers