ClassID:

97783

C08F6/28 - CPC Classification

Classification description:

Post-polymerisation treatments; Treatment of polymers prepared in bulk also solid polymers or polymer melts, Purification

Recent Application in this class:
#1
20260028434
2026-01-29

REMOVAL OF ODORANTS FROM POLYOLEFIN PARTICLES

#2
20260015241
2026-01-15

METHODS FOR PRODUCING GRAPHENE FROM COAL

#3
20260008880
2026-01-08

WATER-SOLUBLE POLYMER COMPRISING HYDROXAMIC ACID GROUPS

#4
20250145743
2025-05-08

METHOD OF PREPARING VINYL CHLORIDE POLYMER

#5
20250092167
2025-03-20

Process for reducing the VOC content of a polyolefin composition

#6
20250051492
2025-02-13

DEVOLATILIZATION OF ETHYLENE/a-OLEFIN COPOLYMER PELLETS

#7
20250019471
2025-01-16

CENTRALIZED HYDROCARBON TREATMENT IN A POLYMER PRODUCTION PROCESS

#8
20240092992
2024-03-21

METHOD FOR PURIFYING RECLAIMED POLYMERS

#9
20240059805
2024-02-22

PROCESS FOR REMOVING CHLORINE FROM A PLASTIC MIXTURE

#10
20220127389
2022-04-28

Low critical solution temperature purification of oxazoline polymer solutions

#11
20210403329
2021-12-30

Systems for producing advanced carbon materials at carbon source locations

#12
20210380416
2021-12-09

Methods for producing advanced carbon materials from coal

#13
20210363018
2021-11-25

Methods for producing carbon fiber from coal

#14
20210363017
2021-11-25

Methods for forming resins and other byproducts from raw coal

#15
20210309770
2021-10-07

Production method of polyvinyl alcohol resin, and polyvinyl alcohol resin

#16
20210261698
2021-08-26

Purified polymer and methods for making

#17
20210238322
2021-08-05

Systems and methods for processing fluoropolymer materials and related workpieces

#18
20210230419
2021-07-29

Polymer and preparation method and application thereof

#19
20210095058
2021-04-01

Process for removing volatile components from an olefin polymer and article obtained

#20
20210094830
2021-04-01

METHODS FOR PRODUCING GRAPHENE FROM COAL

#21
20210046209
2021-02-18

HYDROPHILIC COMPOUND REMOVAL METHOD AND ODOR REMOVAL METHOD

#22
20200332032
2020-10-22

Methods for modifying the rheology of polymers

#23
20200325309
2020-10-15

Modified resins and uses thereof

#24
20200308317
2020-10-01

Method for producing heterophasic propylene polymerization material particles

#25
20200040115
2020-02-06

Copolymer and preparation method therefor

#26
20190375863
2019-12-12

A PROCESS FOR REMOVING CHLORIDE FROM A POLYMER MELT

#27
20190322778
2019-10-24

Systems and methods for processing fluoropolymer materials and related workpieces

#28
20190194828
2019-06-27

Methods for producing carbon fibers from coal

#29
20190194544
2019-06-27

Methods for producing advanced carbon materials from coal

#30
20190194364
2019-06-27

Methods for forming resins and other byproducts from raw coal

#31
20190194025
2019-06-27

Systems for producing advanced carbon materials at carbon source locations

#32
20190194022
2019-06-27

Methods for producing graphene from coal

#33
20180318793
2018-11-08

Method for preparing super absorbent polymer, and super absorbent polymer

#34
20180312680
2018-11-01

Super absorbent polymer

#35
20180030164
2018-02-01

Process for producing (meth)acrylic resin composition

#36
20180030163
2018-02-01

Methods for modifying the rheology of polymers

#37
20170327650
2017-11-16

Crosslinked polymer based on a random copolymer and a volatile polyaminated crosslinking agent and processes for producing same

#38
20170226237
2017-08-10

Method for producing (meth)acrylic resin composition

#39
20170198066
2017-07-13

Package for pellets of saponified ethylene-vinyl ester-based copolymer or resin composition thereof

#40
20170129969
2017-05-11

Control methods and systems for polymer product purge

#41
20170107305
2017-04-20

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

#42
20150376100
2015-12-31

Method for recovering fluorine-containing ether

#43
20150368463
2015-12-24

Method for the production of ABS compositions having an improved surface

#44
20150361225
2015-12-17

Method for the production of ABS compositions having an improved surface following storage in a warm-humid environment

#45
20140155564
2014-06-05

Method for purifying resin for photolithography

#46
20140121331
2014-05-01

Treatment method for fluororesin pellets

#47
20130345368
2013-12-26

Fluoropolymer resin treatment employing melt extrusion and exposure to oxygen source to reduce discoloration

#48
20130303715
2013-11-14

Fluoropolymer resin treatment employing heating and oxygen source to reduce discoloration

#49
20120329949
2012-12-27

Method for producing polyvinyl alcohol resin

#50
20120319318
2012-12-20

Cooling and pelletizing process for semi-crystalline polymers

#51
20120149838
2012-06-14

Method for recycling of phenolic antioxidant agent, process for production of olefin polymer, polyolefin powder, and fibers

#52
20120041115
2012-02-16

Pelletized Low Molecular Weight Brominated Aromatic Polymer Compositions

#53
20120021220
2012-01-26

Method of reducing odor of composite resin particles, and composite resin particles

#54
20110245457
2011-10-06

SYSTEM AND METHOD FOR RECYCLING RESIN PARTICLES

#55
20100272998
2010-10-28

Method for producing water-absorbent polymer particles

#56
20100104866
2010-04-29

Polyvinyl butyral resin pellet, and method for producing the same

#57
20100004420
2010-01-07

Process for preparing a polymer powder extract

#58
20090075078
2009-03-19

Modified polyolefin resin for glass fiber treatment, surface-treated glass fiber, and fiber-reinforced polyolefin resin

#59
20080234448
2008-09-25

Recovery and Washing Process for Polymers

#60
20080076875
2008-03-27

Process for maleating polymerization residues and products

#61
20080045772
2008-02-21

Method for eliminating pollutants contained in an elastic part

#62
20070274789
2007-11-29

Crystallizing conveyor

#63
20070249804
2007-10-25

Preparation of ultrapure polymeric articles

#64
20070232784
2007-10-04

Apparatus and method for removing solvent from carbon dioxide in resin recycling system

#65
20070219286
2007-09-20

Adhesive For Dermal Patch And Production Process Thereof

#66
20070106060
2007-05-10

Method of purifying powdery resin

#67
20070093909
2007-04-26

ORTHOPAEDIC DEVICE FOR IMPLANTATION IN THE BODY OF AN ANIMAL AND METHOD FOR MAKING THE SAME

#68
20070080476
2007-04-12

Method for producing ethylene-vinyl alcohol copolymer pellets

#69
20060287213
2006-12-21

Solvent cleaning system and method for removing contaminants from solvent used in resin recycling

#70
20060286007
2006-12-21

Process and device for manufacturing an aromatic alkylene polymer

#71
20060281896
2006-12-14

System for removing contaminants from plastic resin

#72
20060281895
2006-12-14

Method for removing contaminants from plastic resin

#73
20060223981
2006-10-05

Method for removing contaminants from plastic resin

#74
20060223980
2006-10-05

Method of removing contaminants from plastic resins

#75
20060219276
2006-10-05

Method of removing contaminants from plastic resins

#76
20060122299
2006-06-08

High performance P(VDF-TrFE) copolymer for pyroelectric conversion

#77
20060020107
2006-01-26

Reduction of permeation through a polymer

#78
20050245725
2005-11-03

Process for the preparation of low fuming fluoropolymer

#79
20050228129
2005-10-13

Method for improved the handling heat-resistance of the ethylene-vinyl alcohol copolymer

#80
20050197487
2005-09-08

Continuous resin recovery apparatus and recovery method

#81
20050107754
2005-05-19

Method of purification of polymeric medical device materials using continuous soxhlet extraction