Dispersant compositions
AssigneeNissin Chemical Industry Co., Ltd.
InventorsNorio Nakamura, Shuichiro Shinohara
Life of this patent
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Abstract
A dispersant composition comprising (A) 20-80% by weight of an acetylene glycol or ethoxylated acetylene glycol and (B) 20-80% by weight of a graft product of an allyl alcohol-maleic anhydride-styrene copolymer with a polyoxyalkylene monoalkyl ether, comprising (a) polyoxyalkylene monoalkyl ether units, (b) maleic anhydride units, and (c) styrene units, in a compositional ratio a:b:c of 25-40:25-40:25-40 in mole percent, and having a {overscore (Mw)} of 1,000-50,000 exerts improved dispersing, anti-foaming and viscosity-reducing effects, when used in small amounts in dispersing of inorganic particulates.
Claims1
A dispersant composition comprising
- (A) 20 to 80% by weight of at least one acetylene glycol selected from acetylene glycols of the formula (1):
- 8
- wherein R1 and R2 each are a C1-5 alkyl group, and ethoxylated acetylene glycols of the formula (2):
- 9
- wherein R1 and R2 each are a C1-5 alkyl group, m and n each are a positive number of 0.5 to 25, and m+n is 1 to 40, and
- (B) 20 to 80% by weight of a graft product of an allyl alcohol-maleic anhydride-styrene copolymer with a polyoxyalkylene monoalkyl ether, comprising (a) polyoxyalkylene monoalkyl ether units of the formula (3):
- 10
- wherein R3 is a C1-5 alkyl group and p is a positive number of 5 to 50, (b) maleic anhydride units, and (c) styrene units, in a compositional ratio a:b:c of 25-40:25-40:25-40 in mole percent, the graft product having a weight average molecular weight of 1,000 to 50,000.
Dependencies are inferred from the claim text.