	US 11,719,689 B2
	Composition for separating blood serum or blood plasma, blood collection container, and method for separating blood serum or blood plasma
Ryusuke Okamoto, Tokyo (JP); and Kuniya Komai, Shunan (JP)
Assigned to SEKISUI MEDICAL CO., LTD., Tokyo (JP)
Appl. No. 16/639,091
Filed by SEKISUI MEDICAL CO., LTD., Tokyo (JP)
PCT Filed Dec. 25, 2018, PCT No. PCT/JP2018/047526 § 371(c)(1), (2) Date Feb. 13, 2020, PCT Pub. No. WO2019/131613, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. 2017-251269 (JP), filed on Dec. 27, 2017.
Prior Publication US 2020/0209215 A1, Jul. 2, 2020
Int. Cl. G01N 33/49 (2006.01); A61J 1/14 (2023.01); B01D 21/26 (2006.01); G01N 1/28 (2006.01)

CPC G01N 33/491 (2013.01) [A61J 1/1468 (2015.05); B01D 21/262 (2013.01); G01N 1/28 (2013.01); B01D 2221/10 (2013.01)]

16 Claims

1. A composition for separating blood plasma comprising:

a (meth)acrylic acid ester-based polymer, a silica fine powder, and a silicone oil, wherein

the (meth)acrylic acid ester-based polymer has fluidity at room temperature, and has a weight average molecular weight of 15000 or more and 100000 or less,

a content of the silicone oil is 0.10% by weight or more and 2.00% by weight or less,

the composition for separating blood plasma separates white blood cell-containing blood plasma from blood, and

the composition for separating blood plasma has a specific gravity at 25° C. of greater than 1.060 and 1.095 or less.