Coupled polymers and methods for making same
US-9221923-B2 · Dec 29, 2015 · US
Silylated polybutadiene
US9828448B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9828448-B2 |
| Application number | US-201214239707-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2012 |
| Priority date | Oct 6, 2011 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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Abstract
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The objective of the present invention is to provide a derivative of polybutadiene suitable as a material of a curable composition for obtaining a cured product having high shearing stress. The present invention provides: a silylated polybutadiene characterized by containing a repeating unit represented by formula (I) (in the formula: R 1 , R 2 , and R 3 each independently represents an unsubstituted or substituted aryl group, an alkyl group, or an aralkyl group. Among R 1 to R 3 , at least one of R 1 to R 3 is an aryl group or aralkyl group); a curable composition characterized by containing the silylated polybutadiene and a polymerization initiator; and a cured product obtained by curing the curable composition.
First claim
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The invention claimed is: 1. A silylated polybutadiene containing a repeating unit represented by formula (I): where R 1 , R 2 , and R 3 each independently represents an unsubstituted or substituted aryl group, or an aralkyl group, wherein a silylation rate of the silylated polybutadiene is 9 to 37%. 2. The silylated polybutadiene according to claim 1 , wherein the silylated polybutadiene is obtained by silylating polybutadiene comprising 75 to 100 mole % of repeating units represented by formula (II) and 0 to 25 mole % of repeating units represented by formula (III): 3. The silylated polybutadiene according to claim 1 , wherein a number average molecular weight is 500 to 10,000. 4. A curable composition containing the silylated polybutadiene according to claim 1 and a polymerization initiator. 5. A cured product obtained by curing the curable composition according to claim 4 . 6. An adhesive containing the silylated polybutadiene according to claim 1 and a polymerization initiator. 7. A composition for forming a thin-film containing the silylated polybutadiene according to claim 1 and a polymerization initiator. 8. The silylated polybutadiene according to claim 1 , wherein in said formula (I), each of R 1 , R 2 , and R 3 represents a phenyl group.
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- What does patent US9828448B2 cover?
- The objective of the present invention is to provide a derivative of polybutadiene suitable as a material of a curable composition for obtaining a cured product having high shearing stress. The present invention provides: a silylated polybutadiene characterized by containing a repeating unit represented by formula (I) (in the formula: R 1 , R 2 , and R 3 each independently represents an unsubs…
- Who is the assignee on this patent?
- Nippon Soda Co
- What technology area does this patent fall under?
- Primary CPC classification C08F36/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 28 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).