Title:
ホットメルト組成物、シーリング材およびシリンジ
Document Type and Number:
Japanese Patent JP7323906
Kind Code:
B2
Abstract:
To provide a hot-melt composition which is excellent in thermal stability and flexibility, is small in permanent compression set, and is also excellent in fine coating property.SOLUTION: A hot-melt composition contains, per 100 pts.mass of (A) a hydrogenated styrenic thermoplastic elastomer having styrenic polymer blocks at both terminals, having a hydrogenated diene polymer block at an intermediate part, and having a mass average molecular weight (Mw) of 200,000 to 450,000, 600-1,200 pts.mass of (B) a non-aromatic hydrocarbon oil having a mass average molecular weight of 600-1,500, 200-500 pts.mass of (C) a hydrogenated tackifier resin for diene polymer block having a softening point of 100-160°C, 0-400 pts.mass of (D) a styrenic tackifier resin having a softening point of 80-160°C, and (E) a primary antioxidant and (F) a secondary antioxidant; and has an absolute value of a viscosity change rate when being heated at 220°C for 5 hours of 50% or less.SELECTED DRAWING: None
Inventors:
Tomonobu Yamauchi
Kazuya Furukawa
Takashi Koga
Kazuya Furukawa
Takashi Koga
Application Number:
JP2018205083A
Publication Date:
August 09, 2023
Filing Date:
October 31, 2018
Export Citation:
Assignee:
Asahi Chemical Synthesis Co., Ltd.
International Classes:
C08L53/02; C08K5/105; C08K5/3435; C08K5/524; C08L25/08; C08L57/02; C08L91/00
Domestic Patent References:
| JP2017179061A | ||||
| JP2011190287A | ||||
| JP2005255853A | ||||
| JP2001335640A | ||||
| JP2016519710A | ||||
| JP2016089171A | ||||
| JP2016196601A | ||||
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| JP2017186527A | ||||
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| JP2011195711A | ||||
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| JP2005105205A |
Attorney, Agent or Firm:
Maeda Suzuki International Patent Attorneys Corporation