Polymers, co-polymers, and monomers using co2 as a reagent
US-2015376331-A1 · Dec 31, 2015 · US
Precise control of molecular weight and chain shape control in carbon dioxide/epoxide alternating copolymerization and preparation of low molecular weight poly(alkylene carbonate) thereby
US9023979B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9023979-B2 |
| Application number | US-201313927485-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2013 |
| Priority date | Apr 6, 2010 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
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This invention relates to a method of preparing poly(alkylene carbonate) that has a molecular weight and polymer chain structure precisely controlled by adding a chain transfer agent composed of a compound having an alcohol or carboxylic acid functional group upon alternating copolymerization of an epoxide compound and carbon dioxide using a catalyst composed of a trivalent metal complex compound synthesized from a quaternary ammonium salt-containing Salen type ligand, and to a polymer compound prepared thereby. According to this invention, the polymer compound having a star-shaped chain as well as the polymer having a linear chain can be prepared. The low-molecular-weight poly(alkylene carbonate) has an —OH terminal group and can be used alone as a coating agent, etc., and also in mixtures with an isocyanate compound and thus can be easily utilized to prepare polyurethane.
First claim
Opening claim text (preview).
What is claimed is: 1. A poly(alkylene carbonate) represented by Formula 10 below: J[L-{CR 81 R 82 —CR 83 R 84 —OC(O)O} d —CR 81 R 82 —CR 83 R 84 —OH] c [Formula 10] wherein L is —CO 2 —; c is 2; J is para-phenyl meta-phenylene, ortho-phenylene or 2,6-naphthalenediyl; R 81 R 84 are each independently hydrogen; (C 1 -C 10 )alkyl substituted or unsubstituted with halogen or (C 1 -C 20 ) alkoxy; or (C 6 -C 12 )aryl substituted or unsubstituted with halogen or (C 1 -C 20 )alk…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G64/0208Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9023979B2 cover?
- This invention relates to a method of preparing poly(alkylene carbonate) that has a molecular weight and polymer chain structure precisely controlled by adding a chain transfer agent composed of a compound having an alcohol or carboxylic acid functional group upon alternating copolymerization of an epoxide compound and carbon dioxide using a catalyst composed of a trivalent metal complex compou…
- Who is the assignee on this patent?
- Sk Innovation Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08G64/0208. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 05 2015 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).