Stereolithography resin compositions and three-dimensional objects made therefrom

Inactive Publication Date: 2010-09-09
DSM IP ASSETS BV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033]An object of the present invention is to provide a photocurable resin composition for three-dimensional photofabrication which produces a cured product (three-dimensional fabricated product) exhibiting high toughness (e.g., folding resistance and impact resistance) and high rigidity (e.g., Young's modulus and flexural modulus), and a three-dimensional fabricated product formed of the composition.
[0034]As a result of extensive studies to achieve the above object, the inventors of the present invention have found that a curable composition satisfying the above characteristics can be produced by using a photocurable resin composition comprising a specific cationically polymerizable compound, a cationically polymerizable compound other than the specific cationically polymerizable compound, a cationic photoinitiator, a radically polymerizable compound, a radical photoinitiator, and a rubber polymer par

Problems solved by technology

However, the technologies disclosed in Patent Documents JP-A-1-204915, JP-A-2-208305, JP-A-3-160013 (composition (a)) have a limitation in that it is difficult to obtain a high fabrication accuracy due to large cure shrinkage.
The technology disclosed in Patent Document JP-A-1-213304 (composition (b)) ensures a high fabrication accuracy, but tends to produce a brittle cured product with low toughness.
Moreover, the curing speed is insufficient.
The technologies disclosed in Patent Documents JP-A-2-28261, JP-A-2-75618, JP-A-6-228413, JP-A-11-310626, JP-A-11-228610, JP-A-11-240939)

Method used

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  • Stereolithography resin compositions and three-dimensional objects made therefrom
  • Stereolithography resin compositions and three-dimensional objects made therefrom
  • Stereolithography resin compositions and three-dimensional objects made therefrom

Examples

Experimental program
Comparison scheme
Effect test

Example

[0189]The results of Example 1 are shown in table 2.

Example

Comparative Example 1

[0190]The same experiment as in Example 1 was carried out except for using unmodified elastomer particles (“RKB5610CP-60” manufactured by Reginous Kasei Co., Ltd.) instead of component (F). The results are shown in Table 2.

Example

Comparative Example 2

[0191]The same experiment as in Example 1 was carried out except for using unmodified elastomer particles (“Reginous Bond RKB” manufactured by Reginous Kasei Co., Ltd.) instead of the component (F). The results are shown in Table 2.

TABLE 2ComparativeComparativeExample 1Example 1Example 2Type of componentPB / GMA + PMMASBR / PMMASBR / PMMA(F) (core / shell layer)Diameter of100200100component (F) (nm)Viscosity (mPa · s)1,3651,7001,300[Evaluation]Young's modulus257266126(MPa)Folding resistance test350140190(number of folds)Impact value (J / cm)1206050PB: PolybutadieneGMA: Glycidyl methacrylate (monomer for epoxy modification)PMMA: Polymethyl methacrylateSBR: Styrene-butadiene rubber

[0192]Table 2 shows that a cured product having high rigidity (Young's modulus of elasticity) and high toughness (folding resistance and film impact value) can be obtained using the elastomer particles modified with a functional group of Example 1. On the other hand, in Comparative Examples 1 and ...

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Abstract

A photocurable resin composition for three-dimensional photofabrication operations, including stereolithography, comprising (A) a cationically polymerizable compound having two or more bisphenol structures and one or more hydroxyl groups, (B) a cationically polymerizable compound other than the component (A), (C) a cationic photoinitiator, (D) a radically polymerizable compound, (E) a radical photoinitiator, and (F) multilayer polymer particles having a core and a shell layer, the shell layer containing functional group-modified rubber polymer particles having at least one reactive functional group.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a photocurable resin composition for three-dimensional photofabrication and a three-dimensional fabricated object formed of the composition. This type of photocurable resin composition is typically referred to as a stereolithography resin and the process of making the three dimensional object using the resin composition is typically referred to as stereolithography.[0002]The present invention also includes the process of making the three-dimensional object and the three dimensional object itself.BACKGROUND OF THE INVENTION[0003]A three-dimensional photofabrication method is known in which a step of selectively applying light to a photocurable resin composition to form a cured resin layer is repeated to form a three-dimensional fabricated product in which the cured resin layers are integrally stacked (See Patent Documents JP-A-60-247515, JP-A-62-35966, JP-A-62-101408, and JP-A-5-24119). The process of making the three dimen...

Claims

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Application Information

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IPC IPC(8): C08F2/46B29C35/08
CPCG03F7/0037Y10T428/24893G03F7/038G03F7/027B33Y10/00B33Y70/00G03F7/00
Inventor UEDA, MASAHIROTAKASE, KATSUYUKIKUROSAWA, TAKAHIKO
Owner DSM IP ASSETS BV
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