Title:
POLYROTAXANE, CROSSLINKED EPDM COMPOSITION, AND WEATHER STRIP
Document Type and Number:
WIPO Patent Application WO/2023/013426
Kind Code:
A1
Abstract:
[Problem] To provide: a crosslinked EPDM composition which enables the re-dissolution of a polyrotaxane having a hydrosilyl group in a primary solvent after solidification and therefore enables the handling of the polyrotaxane in a solid form, and contains the polyrotaxane as a crosslinking agent to greatly improve the tensile strength and elongation at break thereof; and a weather strip. [Solution] Provided is a polyrotaxane having a linear molecule, a cyclic molecule and a capping group, in which a side chain in the cyclic molecule contains a caprolactone structure and a terminal hydrosilyl group. In the polyrotaxane, a hydrosilyl group is contained in the cyclic molecule thereof. Therefore, the polyrotaxane has a solid form, and can be dissolved in all of chloroform, tetrahydrofuran and toluene. The EPDM composition contains an EPDM polymer that is crosslinked using the polyrotaxane as a crosslinking agent.
Inventors:
SEO AKISHIGE (JP)
ANDO SHOTA (JP)
ITO KOHZO (JP)
MAYUMI KOICHI (JP)
ANDO SHOTA (JP)
ITO KOHZO (JP)
MAYUMI KOICHI (JP)
Application Number:
PCT/JP2022/028297
Publication Date:
February 09, 2023
Filing Date:
July 21, 2022
Export Citation:
Assignee:
TOYODA GOSEI KK (JP)
UNIV TOKYO (JP)
UNIV TOKYO (JP)
International Classes:
C08G65/08; B60J10/15; B60R13/06; C08B37/16; C08L5/16; C08L23/16; C08L71/02
Domestic Patent References:
| WO2020129744A1 | 2020-06-25 |
Foreign References:
| JP2021127362A | 2021-09-02 | |||
| JP2017201007A | 2017-11-09 | |||
| JP2014034623A | 2014-02-24 | |||
| JP2006233007A | 2006-09-07 |
Other References:
SOGAWA HIROMITSU, TOYOKAZU TSUTSUBA, NAOTO SAKIYAMA, TATSUHITO IKEDA, TOSHIKAZU TAKATA: "Rotaxane-Based Difunctional Nitrile N-Oxide Crosslinker: Synthesis and Direct Introduction of Movable Crosslinking Points into Ethylene-Propylene-Butadiene Monomer (EPDM) Rubber", MACROMOLECULAR RAPID COMMUNICATIONS, vol. 42, no. 7, 16 December 2020 (2020-12-16), XP093033159, DOI: 10.1002/marc.202000639
KAZUAKI KATO, DAISUKE MATSUI, KOICHI MAYUMI, KOHZO ITO: "Synthesis, structure, and mechanical properties of silica nanocomposite polyrotaxane gels", BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, vol. 11, pages 2194 - 2201, XP055599545, DOI: 10.3762/bjoc.11.238
MIKI KAZUYA, YASUNARI INAMOTO, SHUKA INOUE, TAKAHIRO UNO, TAKAHITO ITOH, MASATAKA KUBO: "Preparation of three-dimensional poly(dimethylsiloxane) (PDMS) with movable cross-linking", JOURNAL OF POLYMER SCIENCE PART A: POLYMER CHEMISTRY, JOHN WILEY & SONS, INC., US, vol. 47, no. 21, 28 September 2009 (2009-09-28), US , pages 5882 - 5890, XP093033161, ISSN: 0887-624X, DOI: 10.1002/pola.23633
SASABE, H. KIHARA, N. MIZUNO, K. OGAWA, A. TAKATA, T.: "Efficient synthesis of [2]- and higher order rotaxanes via the transition metal-catalyzed hydrosilylation of alkyne", TETRAHEDRON LETTERS, ELSEVIER, AMSTERDAM , NL, vol. 46, no. 22, 30 May 2005 (2005-05-30), Amsterdam , NL , pages 3851 - 3853, XP004870444, ISSN: 0040-4039, DOI: 10.1016/j.tetlet.2005.03.186
KAZUAKI KATO, DAISUKE MATSUI, KOICHI MAYUMI, KOHZO ITO: "Synthesis, structure, and mechanical properties of silica nanocomposite polyrotaxane gels", BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, vol. 11, pages 2194 - 2201, XP055599545, DOI: 10.3762/bjoc.11.238
MIKI KAZUYA, YASUNARI INAMOTO, SHUKA INOUE, TAKAHIRO UNO, TAKAHITO ITOH, MASATAKA KUBO: "Preparation of three-dimensional poly(dimethylsiloxane) (PDMS) with movable cross-linking", JOURNAL OF POLYMER SCIENCE PART A: POLYMER CHEMISTRY, JOHN WILEY & SONS, INC., US, vol. 47, no. 21, 28 September 2009 (2009-09-28), US , pages 5882 - 5890, XP093033161, ISSN: 0887-624X, DOI: 10.1002/pola.23633
SASABE, H. KIHARA, N. MIZUNO, K. OGAWA, A. TAKATA, T.: "Efficient synthesis of [2]- and higher order rotaxanes via the transition metal-catalyzed hydrosilylation of alkyne", TETRAHEDRON LETTERS, ELSEVIER, AMSTERDAM , NL, vol. 46, no. 22, 30 May 2005 (2005-05-30), Amsterdam , NL , pages 3851 - 3853, XP004870444, ISSN: 0040-4039, DOI: 10.1016/j.tetlet.2005.03.186
Attorney, Agent or Firm:
MATSUBARA Hitoshi (JP)
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