Title:
発泡性スチレン系樹脂小粒子、予備発泡スチレン系樹脂小粒子、およびスチレン系樹脂発泡成形体
Document Type and Number:
Japanese Patent JP7445480
Kind Code:
B2
Abstract:
To provide foamable styrene resin small particles which can improve flowability of preliminary foamed styrene resin small particles, and preliminarily foamed styrene small particles which are formed by preliminary foaming the foamable styrene resin small particles and are excellent in flowability, and a styrene resin foam molding formed from the foamable styrene resin small particles and the preliminarily foamed styrene resin small particles.SOLUTION: Foamable styrene resin small particles contain a polystyrene resin and a foaming agent, and have an average particle diameter of 0.20 mm to 0.95 mm. The main body of the foamable styrene resin small particles containing the polystyrene resin and the foaming agent is coated with at least one kind selected from the group consisting of magnesium, calcium and zinc. When the total of an amount of the main body of the foamable styrene resin small particles, amount A of the magnesium, amount B of the calcium and amount C of the zinc is 100 mass%, A is 0.600 mass% or less, B is 0.200 mass% or less and C is 1.000 mass% or less. When B is 0 mass% and C is 0 mass%, A is 0.013 mass% or more. When A is 0 mass% and C is 0 mass%, B is 0.015 mass% or more. When A is 0 mass% and B is 0 mass%, C is 0.020 mass% or more.SELECTED DRAWING: None
More Like This:
Inventors:
Naoki Michihata
Application Number:
JP2020052081A
Publication Date:
March 07, 2024
Filing Date:
March 24, 2020
Export Citation:
Assignee:
Sekisui Plastics Co., Ltd.
International Classes:
C08J9/224
Domestic Patent References:
| JP4220441A | ||||
| JP6128405A | ||||
| JP2006152029A | ||||
| JP2005015715A | ||||
| JP2013072040A | ||||
| JP2019073653A |
Foreign References:
| WO2004014992A1 |
Attorney, Agent or Firm:
Seiai International Patent Attorney Corporation
Koichi Kamada
Masayasu Yoshida
Koichi Kamada
Masayasu Yoshida