Polymerizable compound, polymerizable composition, polymer, and optically anisotropic body
US-9234056-B2 · Jan 12, 2016 · US
Live poly(n-vinyl lactam) reactive stabilizers for dispersed phase polymerization
US9487598B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9487598-B2 |
| Application number | US-201314375328-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2013 |
| Priority date | Jan 31, 2012 |
| Publication date | Nov 8, 2016 |
| Grant date | Nov 8, 2016 |
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Abstract
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The present invention concerns a method for preparing a polymer comprising a step (EI) for dispersed phase polymerization in the presence of a reactive stabiliser, wherein the following are brought into contact in an aqueous phase:—at least one ethylenically unsaturated monomer; —at least one source of free radicals; and—a reactive stabiliser comprising a polymer chain including monomer units (N-vinyl lactam) and a thiocarbonylthio-S group (C═S)—.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for preparing a polymer, comprising a step (E1) of dispersed-phase polymerization in the presence of a reactive stabilizer, wherein the following are placed in contact in an aqueous phase: at least one ethylenically unsaturated monomer; a redox initiator comprising tert-butyl hydroperoxide as oxidizing agent, combined with a reducing agent selected from the group consisting of ascorbic acid and sodium sulfite; and a reactive stabilizer co…
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Human Necessities · mapped topic
Human Necessities · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9487598B2 cover?
- The present invention concerns a method for preparing a polymer comprising a step (EI) for dispersed phase polymerization in the presence of a reactive stabiliser, wherein the following are brought into contact in an aqueous phase:—at least one ethylenically unsaturated monomer; —at least one source of free radicals; and—a reactive stabiliser comprising a polymer chain including monomer units (…
- Who is the assignee on this patent?
- Rhodia Operations
- What technology area does this patent fall under?
- Primary CPC classification C08F26/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 08 2016 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).