Porous particles and methods of making them
US-9029431-B2 · May 12, 2015 · US
Method of making a resin
US9683064B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9683064-B2 |
| Application number | US-201514870429-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2015 |
| Priority date | Sep 30, 2015 |
| Publication date | Jun 20, 2017 |
| Grant date | Jun 20, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A method of making a resin, includes forming an aqueous monomer droplet suspension, and colloidally stabilizing the suspension with a solid particulate material as the first stabilizer and poly(2-ethyl-2-oxazoline) as a second stabilizer. The method further includes heating the colloidally stabilized suspension to polymerize the monomer droplets, thereby forming the resin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for making a resin, comprising: forming an aqueous suspension of droplets of one or more monomers in an aqueous medium that further comprises a polymerization initiator or catalyst, a promoter species, and a first stabilizer that is a solid particulate inorganic compound, providing a second stabilizer in the aqueous suspension to provide a colloidally stabilized suspension, which second stabilizer is a poly(2-ethyl-2-oxazoline) homopolymer, and heating the colloidally stabilized suspension to polymerize the one or more monomers in the droplets, thereby forming particles of the resin. 2. The method of claim 1 , where the first stabilizer comprises colloidal silica particles. 3. The method of claim 1 , wherein the one or more monomers comprise one or more of styrene, vinyl toluene, o-, p- or m-chlorostyrene, chloromethyl styrene, divinylbenzene, ethylene glycol dimethacrylate, vinyl chloride, vinylidene chloride, vinyl acetate, alpha olefins, butadiene, isobutylene, methyl acrylate, methyl methacrylate, butyl acrylate, and butyl methacrylate. 4. The method of claim 1 , wherein the one or more monomers comprises divinylbenzene or ethylene glycol dimethacrylate. 5. The method of claim 1 , wherein the promoter species comprises poly(adipic acid-co-methylaminoethanol). 6. The method of claim 1 , wherein the polymerization initiator or catalyst is a peroxide or azo compound. 7. The method of claim 1 , wherein the second stabilizer is provided in the aqueous suspension with the first stabilizer. 8. The method of claim 1 , wherein the first stabilizer comprises colloidal silica particles; the one or more monomers comprise styrene, divinylbenzene, and butyl acrylate, the promoter species is poly(adipic acid-co-methylaminoethanol); and the polymerization initiator or catalyst is a peroxide. 9. The method of claim 1 , wherein the amount of second stabilizer is at least 0.11 weight % and up to and including 0.21 weight %, based on the total weight of the one or more monomers.
Assignees
Inventors
Classifications
- C08F212/08Primary
Styrene · CPC title
with the aid of macromolecular dispersing agents · CPC title
with esters of acrylic or methacrylic acid · CPC title
Crosslinked polymers · CPC title
Copolymers of styrene · CPC title
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Frequently asked questions
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- What does patent US9683064B2 cover?
- A method of making a resin, includes forming an aqueous monomer droplet suspension, and colloidally stabilizing the suspension with a solid particulate material as the first stabilizer and poly(2-ethyl-2-oxazoline) as a second stabilizer. The method further includes heating the colloidally stabilized suspension to polymerize the monomer droplets, thereby forming the resin.
- Who is the assignee on this patent?
- Eastman Kodak Co
- What technology area does this patent fall under?
- Primary CPC classification C08F212/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 20 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).