Rubber composition for tires and pneumatic tire
US-10407517-B2 · Sep 10, 2019 · US
Method for producing (meth)acrylic-modified polybutadiene
US9534094B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9534094-B2 |
| Application number | US-201314432911-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 6, 2013 |
| Priority date | Nov 13, 2012 |
| Publication date | Jan 3, 2017 |
| Grant date | Jan 3, 2017 |
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- Title
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Abstract
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An object of the present invention is to provide a method for producing (meth)acrylic-modified polybutadiene free from coloration and white turbidity without using a tin compound. The method for producing (meth)acrylic-modified polybutadiene of the present invention comprises reacting polybutadiene having a hydroxyl group at a terminal and a (meth)acrylic ester in the presence of an organoaluminum compound. As the organoaluminum compound, for example, a compound represented by formula (I) (wherein each of R 1 , R 2 , R 3 , and R 4 independently represents a linear or branched C1 to C30 alkyl group) is preferred.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing (meth)acrylic-modified polybutadiene comprising reacting polybutadiene having a hydroxyl group at a terminal and a (meth)acrylic ester in the presence of a catalyst consisting of an organoaluminum compound represented by formula (I): (wherein each of R 1 , R 2 , R 3 , and R 4 independently represents a linear or branched C1 to C30 alkyl group). 2. The method for producing (meth)acrylic-modified polybutadiene according to claim 1 , wherein the (meth)acrylic ester is a compound represented by formula (II): (wherein R 5 represents a hydrogen atom or a methyl group, and R 6 represents a linear or branched C1 to C6 alkyl group). 3. The method for producing (meth)acrylic-modified polybutadiene according to claim 1 , wherein the polybutadiene having a hydroxyl group at a terminal is partially or wholly hydrogenated. 4. The method for producing (meth)acrylic-modified polybutadiene according to claim 1 , wherein the polybutadiene having a hydroxyl group at a terminal has a hydroxyl group at both terminals.
Assignees
Inventors
Classifications
- C08C19/38Primary
with hydroxy radicals · CPC title
Aluminium · CPC title
Esterification or transesterification · CPC title
Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Derivatives of such polymers (C08J2345/00 takes precedence; of conjugated diene rubbers C08J2309/00 - C08J2321/00) · CPC title
Esters of polycarboxylic acids · CPC title
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- What does patent US9534094B2 cover?
- An object of the present invention is to provide a method for producing (meth)acrylic-modified polybutadiene free from coloration and white turbidity without using a tin compound. The method for producing (meth)acrylic-modified polybutadiene of the present invention comprises reacting polybutadiene having a hydroxyl group at a terminal and a (meth)acrylic ester in the presence of an organoalumi…
- Who is the assignee on this patent?
- Nippon Soda Co
- What technology area does this patent fall under?
- Primary CPC classification C08C19/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 03 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).