Photocurable composition for three-dimensional molding, three-dimensional molded product, and method for producing three-dimensional molded product
US11787951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Jan 7, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0002
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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 hav…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.