Who is the assignee on this patent?

Rohm & Haas, Dow Global Technologies Llc

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 Apr 17 2018 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).

Suspensions in aqueous media

US9944737B2 · US · B2

Patent metadata
Field	Value
Publication number	US-9944737-B2
Application number	US-201515537441-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	Dec 22, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

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Title
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Abstract
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Assignees and inventors
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First independent claim
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Abstract

Official abstract text for this publication.

Provided is a method of suspension polymerization comprising (i) providing a suspension of liquid droplets in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble vinyl monomers, and (b) a polyelectrolyte (PED) having a polarity, (c) one or more initiators, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity that is opposite to the polarity of said polyelectrolyte (PED), (ii) polymerizing said vinyl monomer or allowing said vinyl monomer to polymerize.

First claim

Opening claim text (preview).

The invention claimed is: 1. A method of suspension polymerization comprising (i) providing a suspension of liquid droplets in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble vinyl monomers, and (b) a polyelectrolyte (PED) having a polarity, (c) one or more initiators, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity that is opposite to the polarity of said polyelectrolyte (PED), (ii) polymerizing said vinyl monomer or allowing said vinyl monomer to polymerize. 2. The method of claim 1 , wherein the suspension has a pH of 5 to 10. 3. The method of claim 1 , wherein said polyelectrolyte (PED) has negative polarity and said polyelectrolyte (PEW) has positive polarity. 4. The method of claim 1 , wherein said polyelectrolyte (PED) comprises polymerized units of ionic monomer in an amount of 3 mole % to 12 mole %. 5. The method of claim 1 , wherein said polyelectrolyte (PEW) comprises polymerized units of ionic monomer in an amount of 40 mole % to 100 mole %. 6. The method of claim 1 , wherein said polyelectrolyte (PED) is a vinyl polyelectrolyte.

Assignees

Inventors

Classifications

C08F212/08Primary
Styrene · CPC title
C08F2/20Primary
with the aid of macromolecular dispersing agents · CPC title
C08F212/36
Divinylbenzene · CPC title
C08F12/08Primary
Styrene · CPC title
C08F2/18
Suspension polymerisation · CPC title

Patent family

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View patent family 55272574

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Frequently asked questions

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What does patent US9944737B2 cover?: Provided is a method of suspension polymerization comprising (i) providing a suspension of liquid droplets in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble vinyl monomers, and (b) a polyelectrolyte (PED) having a polarity, (c) one or more initiators, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity …
Who is the assignee on this patent?: Rohm & Haas, Dow Global Technologies Llc
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 Apr 17 2018 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).