Serum separation sealant

Details Serum separation sealant Serum separation sealant

G - Physics

01

N

G01N 33/49 (2006.01) B01D 21/26 (2006.01) C09K 3/00 (2006.01) G01N 1/34 (2006.01) G01N 15/05 (2006.01)

Patent

CA 2102993

- 27 - SERUM SEPARATION SEALANT ABSTRACT OF THE DISCLOSURE A serum separating sealant having a specific gravity at 20°C of 1.035 to 1.065, a viscosity of 100 to 400 Pa?S and a yield stress of 100 to 400 dyne/cm2 and comprising: (A) 100 parts by weight of a polymer having specific gravity at 20°C of 0.94 to 1.06 and a viscosity of 10 to 140 Pa?S, derived from an alkyl acrylate or alkyl methacrylate monomer having the formula (I): Image (I) wherein R1 denotes H or CH3, R2 denotes an alkyl group having 1 to 18 carbon atoms; (B) 0.5 to 10 parts by weight of at least one component selected from the group consisting of silica and bentonite; and (C) 0.01 to 2 parts by weight of at least one surfactant selected from the group consisting of: (C-1) fluorocarbon-based surfactants; (C-2) polyester modified alkylpolysiloxane based surfactants; and (C-3) polyether modified alkylpolysiloxane based surfactants.

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