公开(公告)号：US09777080B2

公开(公告)日：2017-10-03

申请号：US14415329

申请日：2013-07-17

Applicant: KURARAY CO., LTD.

Inventor： Tadahito Fukuhara ,  Yousuke Kumaki

IPC: 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 classification number: 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

Abstract: 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：US20150191558A1

公开(公告)日：2015-07-09

申请号：US14415329

申请日：2013-07-17

Applicant: KURARAY CO., LTD.

Inventor： Tadahito Fukuhara ,  Yousuke Kumaki

IPC: C08F14/06 ,  C08L29/04 ,  C08F18/00

CPC classification number: 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

Abstract: 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

Abstract translation: 乙烯基化合物的悬浮聚合用分散稳定剂，其包含皂化度为30摩尔％以上且小于60摩尔％，粘均聚合度（P）为200以上的乙烯醇聚合物（A） 具有6〜18个碳原子的末端烷基，其中，具有氧化烯基的单体单元的含量为0.3摩尔％以下，粘均聚合度（P）与变性 烷基的速率（S）（摩尔％）满足式（1）。 因此，可以提供一种用于悬浮聚合的分散稳定剂，即使在少量使用的乙烯基化合物的悬浮聚合过程中，即使使用少量的乙烯基化合物，增塑剂的吸收性高，容易加工和形成 粗颗粒很少，剩下的单体组分可以容易地除去。 50＆nlE; S×P / 1.880 <100（1）

公开(公告)号：US11667083B2

公开(公告)日：2023-06-06

申请号：US16342379

申请日：2017-10-16

Applicant: KURARAY CO., LTD.

Inventor： Yousuke Kumaki ,  Moritz Baier ,  Herbert Briers Keable

IPC: B29C64/40 ,  B33Y40/00 ,  B33Y70/00 ,  B29C64/314 ,  B29C64/118 ,  C09D11/104 ,  C09D11/106 ,  C09D11/54 ,  B29K29/00 ,  B29K101/12 ,  B33Y10/00

CPC classification number: B29C64/40 ,  B29C64/118 ,  B29C64/314 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C09D11/104 ,  C09D11/106 ,  C09D11/54 ,  B29K2029/04 ,  B29K2101/12

Abstract: A process of manufacturing a three-dimensional object includes a step of depositing and solidifying molten polyvinyl alcohol to form a support structure; and a step of depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform. The support structure has a mixture of at least 50% by weight of polyvinyl alcohol and at most 50% by weight of at least one polymer of polyvinyl butyral, polylactid acid, ethylene-vinylalcohol-vinylacetate terpolymer, vinyl acetate-vinyl pyrrolidone copolymer, acrylonitrile-butadiene-styrene terpolymer, polycaprolactone, vinyl acetate-vinyl caprolactame copolymer, and polyvinyl alcohol having a degree of hydrolysis DH of 30-65%. The support structure can be dissolved to form the three-dimensional object.

公开(公告)号：US12076933B2

公开(公告)日：2024-09-03

申请号：US16342340

申请日：2017-10-16

Applicant: KURARAY CO., LTD.

Inventor： Yousuke Kumaki ,  Moritz Baier

IPC: B29C64/00 ,  B29C64/40 ,  B33Y70/00 ,  C09D11/106 ,  B29K29/00

CPC classification number: B29C64/40 ,  B33Y70/00 ,  C09D11/106 ,  B29K2029/04 ,  B29K2995/0062

Abstract: The invention is directed to a process of manufacturing a three-dimensional object by—providing a support structure comprising polyvinyl alcohol (PVOH) to—depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform characterized in that the support structure consists of a mixture of polyvinyl alcohol (PVOH) and at most 20% by weight of at least one plasticizer according to formula (I), (II) or (III): —R1-C(CH2—OH)3 (1); —[R1-C(CH2—OH)2CH2]2O (11); —(R1)C(CH2—OH)2CH2—O—CH2C(CH2—OH)C(R1)CH2—O—CH2 C(CH2—OH)2R1 (III). With R1=H, CH3, C2H5, C3H7, CH2OH. The support structure can be dissolved to from the three-dimensional object.

公开(公告)号：US10953606B2

公开(公告)日：2021-03-23

申请号：US16342287

申请日：2017-10-16

Applicant: KURARAY CO., LTD.

Inventor： Yousuke Kumaki ,  Moritz Baier

IPC: B29C64/40 ,  B29C64/118 ,  B33Y70/00 ,  B33Y80/00 ,  B29K29/00

Abstract: The invention is directed to a process of manufacturing a three-dimensional object by depositing and solidifying molten polyvinyl alcohol (PVOH) to form a support structure depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform dissolving the support structure to from the three-dimensional object characterized in that the polyvinyl alcohol (PVOH) has an alkaline acetate content of less than 0.5 wght %.