Aqueous composition for surface coating and automotive sheet using the composition
US-2017313037-A1 · Nov 2, 2017 · US
Method of preparing monodispersed polymer polyols
US10954345B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10954345-B2 |
| Application number | US-201916291523-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 4, 2019 |
| Priority date | Mar 2, 2018 |
| Publication date | Mar 23, 2021 |
| Grant date | Mar 23, 2021 |
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Abstract
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Provided is a method of preparing a polymer polyol including steps of (a) respectively batchwise feeding a polyol and a monomer in a weight ratio of 40 to 60:40 to 60 into a reactor to prepare a mixture; and (b) polymerizing the mixture for 1 to 5 hours to prepare monodispersed particles.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of preparing a polymer polyol, comprising the steps of: (a) respectively batchwise feeding a polyol and a styrene monomer in a weight ratio of 40 to 60:40 to 60 into a reactor to prepare a mixture; and (b) polymerizing the mixture for 1 to 5 hours to prepare monodispersed particles, wherein the step (a) further comprises mixing an aqueous solution including a surfactant and dispersing the aqueous solution to convert the mixture into an emulsion. 2. The method according to claim 1 , wherein the polyol is a polyether polyol. 3. The method according to claim 2 , wherein the polyether polyol has a weight average molecular weight of 1,000 to 6,000 g/mol. 4. The method according to claim 2 , wherein the polyether polyol has a hydroxyl value of 30 to 60 mgKOH/g. 5. The method according to claim 1 , wherein the surfactant is a cationic, anionic or nonionic surfactant. 6. The method according to claim 1 , wherein a solvent is further mixed to disperse the mixture in the solvent in the step (a). 7. The method according to claim 6 , wherein the solvent is one selected from the group consisting of toluene, tetrahydrofuran, chloroform, cyclohexane, dioxane, dimethyl sulfoxide, dimethylformamide, acetone, acetonitrile, n-butanol, n-pentanol, chlorobenzene, ethylbenzene, dichloromethane, diethyl ether, tert-butanol, 1,2,-dichloroethylene, diisopropyl ether, ethanol, ethyl acetate, ethyl methyl ketone, heptane, hexane, isopropyl alcohol, isoamyl alcohol, methanol, pentane, n-propyl alcohol, pentachloroethane, 1,1,2,2-tetrachloroethane, 1,1,1-trichloroethane, tetrachlorethylene, tetrachloromethane, trichlorethylene, water, xylene, benzene, nitromethane, and combinations of two or more thereof.
Assignees
Inventors
Classifications
onto polyethers · CPC title
Polyethers · CPC title
- C08G18/63Primary
Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers · CPC title
- C08G81/025Primary
containing polyether sequences · CPC title
Manufacture of cellular products · CPC title
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- What does patent US10954345B2 cover?
- Provided is a method of preparing a polymer polyol including steps of (a) respectively batchwise feeding a polyol and a monomer in a weight ratio of 40 to 60:40 to 60 into a reactor to prepare a mixture; and (b) polymerizing the mixture for 1 to 5 hours to prepare monodispersed particles.
- Who is the assignee on this patent?
- Korea Kumho Petrochemical Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08G18/63. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 23 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).