Polymer polyol and process for producing the same
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsSeulgi KIM, Gi Jung KIM, Jinwoo PARK
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Abstract
Disclosed is a process for producing a polymer polyol, comprising: (a) reacting a first mixture comprising an initiator, a polyol, a diluent, a stabilizer, a styrene-based monomer and a nitrile-based monomer; and (b) continuously adding, to the first mixture, a second mixture comprising an initiator, a polyol, a stabilizer, a styrene-based monomer and a nitrile-based monomer to react, wherein the first mixture and second mixture comprise the stabilizer in a weight ratio of 1:1 to 3, respectively, and a polymer polyol produced according to the process.
Claims9
A process for producing a polymer polyol, comprising:
- (a) reacting a first mixture comprising an initiator, a polyol, a diluent, a stabilizer, a styrene-based monomer and a nitrile-based monomer;
- and
- (b) continuously adding, to the first mixture, a second mixture comprising an initiator, a polyol, a stabilizer, a styrene-based monomer and a nitrile-based monomer to react,
- wherein the first mixture and second mixture comprise the stabilizer in a weight ratio of 1:1 to 3, respectively.
A polymer polyol, wherein a copolymer comprising unit structures derived from a styrene-based monomer and a nitrile-based monomer is dispersed in a polyol continuous phase, the polymer polyol having a viscosity at 25° C. of 6,000 cps or less and having a filterability of 1 g or less as measured according to the following test method:
- [Filterability test method]
- After mixing 100 g of polymer polyol and 100 g of methylene chloride, the mixture was passed through a 40 mesh screen by gravity, and then the weight of a residue was determined as the filterability.
Dependencies are inferred from the claim text.