公开(公告)号：US20240343845A1

公开(公告)日：2024-10-17

申请号：US18574941

申请日：2022-07-04

申请人： JAPAN VAM & POVAL CO., LTD.

发明人： Takehiro OMORI ,  Yoshiaki KOZUKA ,  Shun TANAKA

IPC分类号： C08F116/06 ,  C08F114/06

CPC分类号： C08F116/06 ,  C08F114/06 ,  C08F2810/00

摘要： Provided are a novel dispersant for suspension polymerization, and the like. The dispersion stabilizer for suspension polymerization includes a polyvinyl alcohol-based polymer (A) having an acetal skeleton having an ionic group.

公开(公告)号：US11760818B2

公开(公告)日：2023-09-19

申请号：US17265118

申请日：2019-10-30

申请人： LG CHEM, LTD.

发明人： Jae Hyun Park ,  Hyun Min Lee ,  Hyun Kyou Ha ,  Kun Ji Kim ,  Kwang Jin Lee ,  Yang Jun Jeon ,  Jin Hyuck Ju

IPC分类号： C08F114/06 ,  C08K3/26

CPC分类号： C08F114/06 ,  C08K3/26 ,  C08K2003/262

摘要： The present disclosure provides a method of preparing a vinyl chloride-based polymer, and the method provides excellent productivity while having reduced amount of a volatile organic compound generated so as to provide the vinyl chloride-based polymer suitable for an eco-friendly material, and improved foaming and viscosity properties of a plastisol including the prepared polymer, by adding a carbonate-based metal salt and a transition metal catalyst together, and controlling input time and amount of the transition metal catalyst.

公开(公告)号：US20230044924A1

公开(公告)日：2023-02-09

申请号：US17905539

申请日：2021-03-04

申请人： PERSTORP AB

发明人： Håkan BJÖRNBERG ,  Anders MAGNUSSON ,  Eva GUSTAVSSON ,  Peter JOHANSSON

IPC分类号： C08F114/06 ,  C08K5/11 ,  C08K3/014 ,  C08K5/00

摘要： The present invention refers to a polyvinyl chloride composition with high stability, said composition comprising: a) 100 phr (parts per hundred resin) of a polyvinyl chloride resin, b) 10-150 phr of pentaerythritol tetravalerate as plasticizer, said pentaerythritol tetravalerate having an acid value of less than 0.05 mg KOH/g and being obtained through esterification of valeric acid and high purity pentaerythritol having a purity of at least 98%, an ash content of less than 200 ppm and a dipentaerythritol content of 0.1-2 wt%, c) 0.3-14 phr of at least one stabilizer, and optionally d) at least one additive, wherein and the amount of free acid in the polyvinyl chloride composition is less than 30 ppm, preferably less than 20 ppm. The invention further refers to a polyvinyl chloride article comprising said composition and having an amount of free acid less than 30 ppm, preferably less than 20 ppm. The present invention also refers to a method for analyzing the amount of free acid in a polyvinyl chloride sample.

公开(公告)号：US11505629B2

公开(公告)日：2022-11-22

申请号：US16962747

申请日：2019-04-29

申请人： LG CHEM, LTD.

发明人： Seong Yong Ahn ,  Kun Ji Kim ,  Se Woong Lee ,  Jin Hyuck Ju ,  Hyun Kyou Ha

IPC分类号： C08F114/06 ,  C08F2/18 ,  C08L27/06 ,  C08F2/00

摘要： The present invention relates to a vinyl chloride polymer and a production method thereof. More specifically, the present invention provides a vinyl chloride polymer having a polydispersity index of 2.0 to 2.3 and a porosity of 60% or greater and a production method thereof in which a vinyl chloride polymerization seed having a conversion rate of 5-20% is first prepared through preliminary polymerization and then a vinyl chloride monomer is introduced into the vinyl chloride polymerization seed to polymerize (main polymerization) a vinyl chloride polymer.

公开(公告)号：US20220064341A1

公开(公告)日：2022-03-03

申请号：US17419084

申请日：2019-12-26

申请人： Research Foundation of the City University of New York

发明人： William J. Blanford ,  Gregory D. O'Mullan ,  Robert Engel

IPC分类号： C08F8/44 ,  C08F114/06 ,  C08F8/40

摘要： A method for producing customized object is provided. A resin (e.g. plastic or cellulose) is heated and a quaternary salt is added. The resulting admixture is used in forming a material that embodies customized characteristics. In another embodiment, a halogen-containing polymer has a quaternary molecule covalently bonded to it that results in customized properties.

公开(公告)号：US10647793B2

公开(公告)日：2020-05-12

申请号：US15914427

申请日：2018-03-07

申请人： Synthomer (UK) Limited

发明人： Virginie Chabrol ,  Chris May ,  Peter Shaw

IPC分类号： C08F114/06 ,  C08F218/08 ,  C08F220/18 ,  C08F220/14 ,  C08L27/06 ,  C08F14/06

摘要： The present invention relates to use of a sulphur or phosphorous-containing polymer as a processing aid in a polyvinyl chloride polymer composition.

公开(公告)号：US20180282447A1

公开(公告)日：2018-10-04

申请号：US15763726

申请日：2017-06-07

申请人： LG CHEM, LTD.

发明人： Jin Hyuck JU ,  Hyun Kyou HA ,  Joong Chul LIM ,  Yang Jun JEON ,  Min Jeong KANG

IPC分类号： C08F114/06

摘要： The present invention relates to a method of preparing a vinyl chloride-based polymer, and more specifically, to a method comprising the steps of, (S1) preparing a mixture in which a first protective colloid auxiliary agent and a chain regulator are mixed; (S2) preparing a second protective colloid auxiliary agent including the chain regulator activated by stirring the mixture prepared in step (S1); and (S3) performing polymerization by adding a vinyl chloride-based monomer and a polymerization initiator in the presence of the second protective colloid auxiliary agent prepared in step (S2).

公开(公告)号：US20180194882A1

公开(公告)日：2018-07-12

申请号：US15914427

申请日：2018-03-07

申请人： Synthomer (UK) Limited

发明人： Virginie Chambrol ,  Chris May ,  Peter Shaw

IPC分类号： C08F114/06 ,  C08F218/08 ,  C08F220/14 ,  C08F220/18

CPC分类号： C08F114/06 ,  C08F14/06 ,  C08F218/08 ,  C08F220/14 ,  C08F220/18 ,  C08F2220/1808 ,  C08F2220/1825 ,  C08L27/06 ,  C08L33/14 ,  C08F2220/585 ,  C08F2/44 ,  C08F2/20 ,  C08L51/003

摘要： The present invention relates to use of a sulphur or phosphorous-containing polymer as a processing aid in a polyvinyl chloride polymer composition.

公开(公告)号：US09777080B2

公开(公告)日：2017-10-03

申请号：US14415329

申请日：2013-07-17

申请人： KURARAY CO., LTD.

发明人： Tadahito Fukuhara ,  Yousuke Kumaki

IPC分类号： C08F14/06 ,  C08F2/20 ,  C08F8/12 ,  C08F114/06 ,  C08F118/08 ,  C08F214/18 ,  C08F18/00 ,  C08L29/04 ,  C08F116/06 ,  C08F16/06 ,  C08F18/08 ,  C08F2/38

CPC分类号： C08F14/06 ,  C08F2/20 ,  C08F2/38 ,  C08F8/12 ,  C08F16/06 ,  C08F18/00 ,  C08F18/08 ,  C08F114/06 ,  C08F116/06 ,  C08F118/08 ,  C08F214/18 ,  C08L29/04 ,  C08L2205/025

摘要： A dispersion stabilizer for suspension polymerization of vinyl compounds comprising a vinyl alcohol polymer (A) which has a saponification degree of 30 mol % or more and less than 60 mol % and a viscosity-average polymerization degree (P) of more than 200 and less than 600, and has a terminal alkyl group having 6 to 18 carbon atoms, and in which a content of monomer units having an oxyalkylene group is 0.3 mol % or less and the relationship between the viscosity-average polymerization degree (P) and a modification rate (S) (mol %) of the alkyl group satisfies Formula (1). Thus, there can be provided a dispersion stabilizer for suspension polymerization with which, during suspension polymerization of vinyl compounds including vinyl chloride, even when it is used in a small amount, the absorbency of a plasticizer is high, resulting in easy processing and formation of coarse particles is little and the remaining monomer components can be easily removed. 50≦S×P/1.880

公开(公告)号：US20170129979A1

公开(公告)日：2017-05-11

申请号：US15129736

申请日：2015-03-27

申请人： SYNTHOMER (UK) LIMITED

发明人： Virginie CHABROL ,  Jon BATTY ,  Peter SHAW ,  Christopher DAVIS ,  Monika FARRELL

IPC分类号： C08F218/08 ,  C08F114/06

CPC分类号： C08F218/08 ,  C08F2/20 ,  C08F2/26 ,  C08F114/06 ,  C08F228/02

摘要： Use of a polymer as a secondary suspending agent in a suspension polymerisation reaction is provided. The polymer comprising (i) residues of at least one ester-containing monomer, the ester-containing monomer (s) comprising one polymerisable carbon-carbon double bond per monomer and an ester group, and (ii) residues of at least one monomer comprising a sulfonate, sulfonic acid, sulfonic ester, sulfonamide or sulfonyl halide group the monomer (s) comprising a sulfonate, sulfonic acid, sulfonic ester group, sulfonamide or sulfonyl halide group comprising one polymerisable carbon-carbon double bond per monomer and a sulfonate, sulfonic acid, sulfonic ester, sulfonamide or sulfonyl halide group, the polymer optionally being partially hydrolysed such that a proportion of said ester groups form alcohol groups, the degree of hydrolysis of the polymer being from 0 to 30 mol %.