光硬化性立体造形用組成物、立体造形物及び立体造形物の製造方法

Japanese Patent JP7284251

B2

A photocurable composition for three-dimensional modeling capable of high-speed modeling, a three-dimensional modeled object using the composition, and a method for producing the three-dimensional modeled object is provided.A photocurable composition for three-dimensional modeling, comprising a polymerizable organic compound component is provided. The photocurable composition has a steady flow viscosity of 30,000 mPa s or less measured with a rotary rheometer at 25°C and a shear rate of 0.01 per second. When the photocurable composition for three-dimensional modeling is irradiated with a light having a light intensity of 1.3 mW/cm2, G' becomes 1×10⁶ Pa or more after a start of photopolymerization in an integrated light irradiation time of 4 seconds or less. After the start of photopolymerization, a maximum value of tan δ on and after a gel point is 0.5 or more. The gel point is the point where G'=G" is satisfied for the first time after the start of photopolymerization. G' is a storage shear modulus, G' is loss shear modulus, and tan δ is a loss tangent, each of which is calculated based on measurement data for 30 seconds per one measurement, measured with a rotary rheometer having a pair of parallel plate with a diameter of 10 mm and a measurement gap of 0.1 mm at a strain of 0.5% or less, a frequency of 0.1 Hz, and 25°C.

Takashi Domoto
Keiji Goto

JP2021509589A

May 30, 2023

March 26, 2020

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Denka Company Limited

B29C64/129; B29C64/286; B29C64/314; B29C64/343; B33Y10/00; B33Y30/00; B33Y40/00; B33Y70/00; B33Y80/00; C08F2/50; C08F220/20; C08F290/06; C08G18/67

JP10030002A
JP2014159556A

WO2017033427A1
WO2018235943A1
WO2017018525A1

SK Patent Attorney Corporation
Akihiko Okuno
Hiroyuki Ito

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