C08G64/406 - CPC Classification Index

#1

20260078217

2026-03-19

METHOD FOR PRODUCING REFINED POLYCARBONATE RESIN

#2

20250313666

2025-10-09

POLYCARBONATE PRODUCTION METHOD, DIHYDROXY COMPOUND RECOVERY METHOD, AND POLYCARBONATE PRODUCTION APPARATUS

#3

20220185956

2022-06-16

Method for quenching a polymerisation process

#4

20220177646

2022-06-09

AROMATIC POLYCARBONATE RESIN COMPOSITION AND AROMATIC POLYCARBONATE RESIN MANUFACTURING METHOD

#5

20220112172

2022-04-14

PROCESS FOR PRODUCING DIOL

#6

20220089813

2022-03-24

Purification process for polyether-carbonate polyols

#7

20220025113

2022-01-27

Method for preparing granular polycarbonate

#8

20210340318

2021-11-04

Preparation method of polyalkylene carbonate

#9

20210277181

2021-09-09

PROCESS FOR SEPARATING GASEOUS CONSTITUENTS

#10

20210253790

2021-08-19

Method for separating organic zinc catalyst using filtering membrane

#11

20210171426

2021-06-10

PROCESS FOR PRODUCING POLYOL

#12

20210163679

2021-06-03

Process for producing a polycarbonate using an organic solvent based on chlorohydrocarbons

#13

20200317540

2020-10-08

Method for treating solvent in wastewater

#14

20200010616

2020-01-09

Method for purifying polyalkylene carbonate

#15

20190315706

2019-10-17

Method for separating propylene carbonate in preparing process of polyether carbonate polyol

#16

20190085122

2019-03-21

Method for preparing polycarbonate

#17

20190077909

2019-03-14

Preparation of robust polythioaminal carriers

#18

20180362708

2018-12-20

Aromatic polycarbonate oligomer solid

#19

20180112043

2018-04-26

Method for dewatering a polymer and the polymer made therefrom

#20

20180105644

2018-04-19

Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same

#21

20180065098

2018-03-08

Drying methods

#22

20170327639

2017-11-16

POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER PRODUCTION METHOD

#23

20170321004

2017-11-09

Filter alignment in a polycarbonate production process

#24

20170226284

2017-08-10

Method of preparing polyalkylene carbonate resin

#25

20170198091

2017-07-13

Method for producing polycarbonate

#26

20170152345

2017-06-01

Process for purifying polycarbonate polyols and purifying apparatus therefor

#27

20170022346

2017-01-26

METHODS USEFUL FOR RECOVERING POLYMERS FROM ELECTRONIC AND OTHER WASTES

#28

20160362537

2016-12-15

Enhanced polycarbonate extrusion grades

#29

20160257790

2016-09-08

Polycarbonate-polyorganosiloxane copolymer and method for continuously producing same

#30

20160177029

2016-06-23

Thermal enhancement of the purification process for interfacial polycarbonate and copolymer polycarbonates

#31

20160168323

2016-06-16

Process for the purification of polycarbonate

#32

20160168322

2016-06-16

Low shear process for polycarbonate purification

#33

20150361215

2015-12-17

Aliphatic polycarbonate quench method

#34

20150315337

2015-11-05

Process for purification of polyether carbonate polyols

#35

20150284509

2015-10-08

Aromatic polycarbonate resin composition

#36

20150166733

2015-06-18

Polycarbonate-polyorganosiloxane copolymer and method for continuously producing same

#37

20150024205

2015-01-22

Method of producing polycarbonate-based polymer microparticles comprising contacting an emulsion with a poor solvent, and polycarbonate-based polymer microparticles

#38

20140378651

2014-12-25

Flame-retarding carbon dioxide/epoxide copolymer and method for preparing the same

#39

20140350198

2014-11-27

Polycarbonate preparation method

#40

20140210136

2014-07-31

Binding Bisphenol A in a polycarbonate container

#41

20140179892

2014-06-26

Method for alcoholysis of polycarbonate compositions containing flame retardant or acrylonitrile-butadiene-styrene

#42

20140155573

2014-06-05

Process for purifying poly (alkylene carbonate)

#43

20130289297

2013-10-31

Precise control of molecular weight and chain shape control in carbon dioxide/epoxide alternating copolymerization and preparation of low molecular weight poly(alkylene carbonate) thereby

#44

20120208979

2012-08-16

Flame-retarding carbon dioxide/epoxide copolymer and method for preparing the same

#45

20120157653

2012-06-21

Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same

#46

20110245424

2011-10-06

Precise control of molecular weight and chain shape control in carbon dioxide/epoxide alternating copolymerization and preparation of low molecular weight poly(alkylene carbonate) thereby

#47

20110207899

2011-08-25

Aliphatic polycarbonate quench method

#48

20110201779

2011-08-18

Purification of polycarbonates

#49

20110184144

2011-07-28

Process and apparatus for the preparation of polycarbonate

#50

20110127468

2011-06-02

Polycarbonate for making extruded films that are virtually free of surface defects

#51

20100076172

2010-03-25

Method of manufacturing a molded article

#52

20090054271

2009-02-26

Glycerol polycarbonate, organic compositions containing same and method for obtaining said compositions

#53

20080289773

2008-11-27

Industrial evaporation apparatus

#54

20080210343

2008-09-04

Process for treatment of metal surfaces

#55

20080200643

2008-08-21

METHOD FOR REDUCING THE CONTENT OF FLUORESCENT PARTICLES IN POLYCARBONATE

#56

20080185343

2008-08-07

Method for separating an organic phase from an electrolyte-containing aqueous and organic phase

#57

20080154018

2008-06-26

Process for the filtration of molten polycarbonate

#58

20080110578

2008-05-15

Industrial Evaporation Apparatus

#59

20080107858

2008-05-08

Polycarbonate for transparent injection-molded articles

#60

20080017325

2008-01-24

Industrial Evaporation Apparatus

#61

20060004178

2006-01-05

Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process

#62

20060004172

2006-01-05

Preparation of clear isocyanate prepolymers based on hexanediolether carbonate