US 11,987,702 B2
Thermoplastic resin composition comprising a core-shell resin and a molded resin article composed of the thermoplastic resin composition
Kentaro Watanabe, Echizen (JP)
Assigned to NISSIN CHEMICAL INDUSTRY CO., LTD., Echizen (JP)
Filed by Nissin Chemical Industry Co., Ltd., Echizen (JP)
Filed on Oct. 14, 2020, as Appl. No. 17/070,251.
Claims priority of application No. 2019-188781 (JP), filed on Oct. 15, 2019; and application No. 2020-168360 (JP), filed on Oct. 5, 2020.
Prior Publication US 2021/0108081 A1, Apr. 15, 2021
Int. Cl. C08L 51/08 (2006.01); B29C 45/00 (2006.01); C08F 283/12 (2006.01); C08L 27/06 (2006.01); C08L 33/08 (2006.01); C08L 33/12 (2006.01); C08L 55/02 (2006.01); C08L 67/00 (2006.01); C08L 69/00 (2006.01); C08L 75/04 (2006.01); C08L 75/06 (2006.01); C08L 77/00 (2006.01); C08L 83/04 (2006.01); B29K 33/00 (2006.01); B29K 83/00 (2006.01)
CPC C08L 83/04 (2013.01) [B29C 45/0001 (2013.01); C08F 283/12 (2013.01); C08F 283/122 (2013.01); C08L 27/06 (2013.01); C08L 33/08 (2013.01); C08L 33/12 (2013.01); C08L 55/02 (2013.01); C08L 67/00 (2013.01); C08L 69/00 (2013.01); C08L 75/04 (2013.01); C08L 75/06 (2013.01); C08L 77/00 (2013.01); B29K 2033/12 (2013.01); B29K 2083/00 (2013.01); C08L 2207/53 (2013.01)] 6 Claims
 
1. A thermoplastic resin composition comprising 80 to 99.9 parts by mass of a thermoplastic resin (I), and 0.1 to 20 parts by mass of a silicone-acryl core-shell resin (II), a total mass of the thermoplastic resin (I) and the silicone-acryl core-shell resin (II) being 100 parts by mass,
wherein
a core particle of the silicone-acryl core-shell resin (II) consists of an organopolysiloxane (a) consisting of units selected from the four units depicted below represented by the following general formula (1), and a shell layer is composed of a polymer of a (meth) acrylate ester monomer (b),

OG Complex Work Unit Chemistry
wherein R1 is, independently of each other, an unsubstituted alkyl group having 1 to 20 carbon atoms, other than an aryl group, R2 is a phenyl group, X is, independently of each other, an unsubstituted alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or a hydroxy group, and Y is a group selected from the groups consisting of a hydroxy group, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, an octadecyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a phenyl group, a tolyl group, a naphthyl group, a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a hexyloxy group, a heptyloxy group, an octyloxy group, a decyloxy group, and a tetradecyloxy group, provided that at least one of the groups represented by X is a hydroxyl group and at least one of the groups represented by Y is a hydroxyl group, wherein a is the number of 0 or more, 0.3≤b/(a+b+c+e)≤1, 0≤c/(a+b+c+e)≤0.6, and 0.001≤e/(a+b+c+e)≤0.1,
wherein a mass ratio of said organopolysiloxane (a) to said polymer of a (meth) acrylate ester monomer (b) is in a range of 40:60 to 90:10,
and a length (β) of the part of a circumference occupied by the polymer of the (meth) acrylate ester monomer (b) in the silicone-acryl core-shell resin (II) accounts for at least 90% of a whole circumferential length (a) of the silicone-acryl core-shell resin (II).