Title:
MOLDED FOAM BODY, DAM RUBBER, COMPOSITE BODY OF DAM RUBBER AND PANEL, AND METHOD FOR INCREASING SOUND TRANSMISSION LOSS
Document Type and Number:
WIPO Patent Application WO/2017/200026
Kind Code:
A1
Abstract:
Provided are: a molded foam body that enables improvement on damping and sound insulation properties of a panel and enables achieving of weight reduction of a panel; a dam rubber; a composite body of a dam rubber and a panel, and a method for increasing sound transmission loss. The present invention relates to a molded foam body of a resin composition comprising: a block copolymer (I) which has a polymer block (A) chiefly consisting of a structural unit derived from an aromatic vinyl compound and another polymer block (B), and which conforms to JIS K7244-10 (2005), and which has a peak top temperature of tan δ of -50°C to 50°C, as measured under the conditions of 1 mm in test piece thickness, 0.1% in distortion amount, 1 Hz in frequency, -70°C to 70°C in measurement temperature, and 3°C/min in temperature increase rate, and which has a peak top molecular weight of 30,000-500,000; at least one type of an olefin polymer (II) selected from the group consisting of ethylene- propylene-diene copolymer rubbers, ethylene- vinyl acetate copolymers, and polyethylene resins; a cross-linking agent (III); and a foaming agent (IV).
Inventors:
MORISHITA YOSHIHIRO (JP)
KATO MASAHIRO (JP)
SENDA YASUSHI (JP)
ARISHIMA HIROYUKI (JP)
KOISHIKAWA JUN (JP)
KATO MASAHIRO (JP)
SENDA YASUSHI (JP)
ARISHIMA HIROYUKI (JP)
KOISHIKAWA JUN (JP)
Application Number:
PCT/JP2017/018595
Publication Date:
November 23, 2017
Filing Date:
May 17, 2017
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08J9/04; C08L23/04; C08L23/16; C08L53/02; B60J10/70; C08F297/04
Domestic Patent References:
| WO2003035705A1 | 2003-05-01 | |||
| WO2011040586A1 | 2011-04-07 | |||
| WO2004003027A1 | 2004-01-08 | |||
| WO2009072503A1 | 2009-06-11 | |||
| WO2010064574A1 | 2010-06-10 | |||
| WO2012102339A1 | 2012-08-02 |
Foreign References:
| JP2003306567A | 2003-10-31 |
Other References:
MASAO ISHII: "Characteristics and Applications 1-6 of Styrenic Block Copolymers", JOURNAL OF THE SOCIETY OF RUBBER INDUSTRY, vol. 70, no. 12, 1997, pages 707 - 714, XP009514292, ISSN: 0029-022X
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 97, 1975, pages 1552 - 1556
JOURNAL OF ORGANIC CHEMISTRY, vol. 41, 1976, pages 2217 - 2220
See also references of EP 3459994A4
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 97, 1975, pages 1552 - 1556
JOURNAL OF ORGANIC CHEMISTRY, vol. 41, 1976, pages 2217 - 2220
See also references of EP 3459994A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
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