公开(公告)号：US10174190B2

公开(公告)日：2019-01-08

申请号：US15306223

申请日：2015-03-26

Applicant: Sekisui Plastics Co., Ltd.

Inventor： Mayumi Ando ,  Toshiki Takenaka ,  Akiyoshi Kusaka ,  Takashi Goto

IPC: C08L33/12 ,  C08F2/18 ,  C09D201/00 ,  C08L101/00 ,  C08L1/28 ,  C09D101/28 ,  C09D133/12 ,  G02B1/04 ,  C08G18/62 ,  C08F212/08 ,  C08F220/14 ,  C08F265/04 ,  C08F265/06 ,  C09D175/04 ,  C09D7/40

Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.

公开(公告)号：US20170058116A1

公开(公告)日：2017-03-02

申请号：US15306223

申请日：2015-03-26

Applicant: Sekisui Plastics Co., Ltd.

Inventor： Mayumi Ando ,  Toshiki Takenaka ,  Akiyoshi Kusaka ,  Takashi Goto

IPC: C08L33/12 ,  G02B1/04 ,  C09D133/12 ,  C08L1/28 ,  C09D101/28

CPC classification number: C08L33/12 ,  C08F2/18 ,  C08F212/08 ,  C08F220/14 ,  C08F265/04 ,  C08F265/06 ,  C08G18/6225 ,  C08L1/284 ,  C08L101/00 ,  C08L2205/025 ,  C08L2205/03 ,  C09D7/40 ,  C09D101/284 ,  C09D133/12 ,  C09D175/04 ,  C09D201/00 ,  G02B1/04 ,  C08F2222/1013 ,  C08F2216/1475 ,  C08F2220/286 ,  C08F2/22 ,  C08F230/02 ,  C08L51/003 ,  C08L51/02

Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.

Abstract translation: 提供了通过悬浮聚合制备颗粒的方法，其确保了单体的优异的分散稳定性和更简单的洗涤步骤，通过该制备方法获得的复合颗粒和复合颗粒的使用。 复合粒子的制造方法包括聚合工序，在体积平均粒径为20〜500nm的小聚合物粒子的存在下，使含有聚合性乙烯基单体的单体混合物进行水性悬浮聚合，得到水溶性 纤维素化合物吸附在小聚合物颗粒的表面上，从而获得含有小聚合物颗粒和大于聚合物颗粒的大聚合物颗粒的复合颗粒。

公开(公告)号：US11098167B2

公开(公告)日：2021-08-24

申请号：US15764058

申请日：2016-03-25

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Takashi Goto ,  Tomoyuki Takahashi ,  Satoru Matsumoto

IPC: C08J3/03 ,  B32B27/20 ,  C08F20/10 ,  C08F2/18 ,  C08F6/04 ,  C08J3/02 ,  C09D201/00 ,  C08F12/00 ,  G02B5/02 ,  C08L101/00 ,  C09D7/40 ,  C09D7/65 ,  C08F12/08 ,  C08L25/14

Abstract: Polymer particles excellent in uniform dispersibility and the use thereof are provided. The polymer particles contain a surfactant, and have a coefficient of variation in the volume-based particle diameter distribution in the range from not less than 13.0% to not more than 25.0%. When 15.0 g of water is added to 5.0 g of the polymer particles so as to disperse the polymer particles in the water by performing a dispersion treatment for 60 minutes using an ultrasonic cleaner, and furthermore when an obtained dispersion liquid is put into a centrifuge tube with an inside diameter of 24 mm so as to be centrifuged, by a centrifugal separator, under conditions that K factor is 6943 and a rotating time is 30 minutes to recover a supernatant, a concentration of non-volatile components in the obtained supernatant is less than 3.5 wt. %.