Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydrogenated block copolymer and method for producing same

A technology of block copolymers and hydrogenated blocks, applied in the field of hydrogenated block copolymers, can solve problems such as insufficient research on practical properties, and achieve the effects of excellent rubber elasticity and excellent weather resistance.

Active Publication Date: 2015-03-18
KURARAY CO LTD +1
View PDF9 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It should be noted that although polymers of β-farnesene are described in Patent Documents 3 and 4, their practical properties have not yet been fully studied.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrogenated block copolymer and method for producing same
  • Hydrogenated block copolymer and method for producing same
  • Hydrogenated block copolymer and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] 62.4 kg of cyclohexane as a solvent and 54.6 g of sec-butyllithium (10.5% by mass cyclohexane solution) as an anionic polymerization initiator were put into a pressure-resistant container replaced with nitrogen and dried, and the temperature was raised to 50°C. , add 2.34 kg of styrene (1) and polymerize it for 1 hour, then add 10.92 kg of β-farnesene and polymerize for 2 hours, then add 2.34 kg of styrene (2) and polymerize for 1 hour to obtain A reaction solution containing a polystyrene-poly(β-farnesene)-polystyrene triblock copolymer (hereinafter referred to as a block copolymer (P1)). 5% by mass of palladium on carbon (loaded palladium: 5% by mass) as a hydrogenation catalyst was added to the reaction solution, and the reaction was carried out under the conditions of hydrogen pressure 2 MPa and 150°C. 10 hours of response. After standing to cool and releasing the pressure, the palladium carbon was removed by filtration, the filtrate was concentrated, and then vacu...

Embodiment 2~9

[0106] Except having followed the compounding described in Table 1, it carried out similarly to Example 1, and produced hydrogenated block copolymer (HP2)-(HP9). The above-mentioned evaluation was performed about the obtained hydrogenated block copolymers (HP2)-(HP9). The results are shown in Table 1 and Table 4.

Embodiment 10

[0108] 62.4 kg of cyclohexane as a solvent and 109.2 g of sec-butyllithium (10.5% by mass cyclohexane solution) as an anionic polymerization initiator were put into a pressure-resistant container replaced with nitrogen and dried, and the temperature was raised to 50°C. , add 2.34 kg of styrene (1) and allow it to polymerize for 1 hour, then add a mixture of 5.46 kg of β-farnesene and 5.46 kg of isoprene, perform polymerization for 2 hours, and then add 2.34 kg of styrene (2) , polymerized for 1 hour to obtain a reaction comprising polystyrene-poly(β-farnesene / isoprene)-polystyrene triblock copolymer (hereinafter referred to as block copolymer (P10)) liquid. 5% by mass of palladium-on-carbon (loaded palladium: 5% by mass) as a hydrogenation catalyst was added to the reaction solution, and the hydrogenation pressure was 2 MPa at 150° C. for 10 hours of response. After cooling and releasing the pressure, remove the palladium carbon by filtration, concentrate the filtrate, and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
peak molecular weightaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a hydrogenated block copolymer including a polymer block (A) containing a constitutional unit derived from an aromatic vinyl compound and a polymer block (B) containing from 1 to 100% by mass of a constitutional unit (b1) derived from farnesene and from 99 to 0% by mass of a constitutional unit (b2) derived from a conjugated diene other than the farnesene, in which 50 mol% or more of carbon-carbon double bonds in the polymer block (B) are hydrogenated.

Description

technical field [0001] The present invention relates to a hydrogenated block copolymer containing a farnesene-derived monomer unit, and a method for producing the same. Background technique [0002] A hydrogenated product of a block copolymer composed of a polymer block comprising structural units derived from an aromatic vinyl compound and a polymer block comprising structural units derived from a conjugated diene exhibits the same Vulcanized rubber has the same characteristics and is widely used in daily necessities, automotive parts, and various industrial products due to its excellent vibration damping properties, flexibility, rubber elasticity, and weather resistance. [0003] The hydrogenated product of such a block copolymer is obtained, for example, by hydrogenating a block copolymer obtained by sequentially polymerizing an aromatic vinyl compound and a conjugated diene such as isoprene and butadiene (for example, refer to Patent Documents 1, 2). [0004] It should...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/02C08F297/02
CPCC08F297/02C08F8/04C08C19/02C08F297/04C08L47/00C08F36/22C08F2500/21
Inventor 上原阳介佐佐木启光
Owner KURARAY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com