Supercharge Your Innovation With Domain-Expert AI Agents!

Photocurable composition for producing cured articles having high clarity and improved mechanical properties

A composition and light-curing technology, which can be used in opto-mechanical equipment, photo-engraving process of pattern surface, optics, etc., and can solve the problems of resin yellowing and opacity.

Inactive Publication Date: 2006-12-13
HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these resins tend to "yellow" or become opaque over time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0127] Table 1 lists the components of each photocurable composition noted in Examples 1-9. The numerical values ​​in Table 1 represent the wt% of each component based on the total weight of the photocurable composition. Table 2 provides further identifying information for the trade names in Table 1.

[0128] components

Reported hydroxyl

Value (mg KOH / g)

Calculated mol

OH / mol monomer

Theoretical mol

OH / mol monomer

DPHPA

(SR 399, 578g / mol)

109.6

1.024

1.00

DPHA (524g / mol)

7.6

0.078

0.0

[0129] Example 1

(Compared)

Example 2

Example 3

(Compared)

Example 4

Example 5

Example 6

Example 7

(Compared)

Example 8

Example 9

DER332

5.0

5.0

5.0

5.0

ERL4221D

46.0

46.0

46.0

46.0

46.0

Uvacure

1500

58.0

58.0

...

Embodiment 9

[0153] As given in Table 1, the photocurable composition of Example 9 contains a multifunctional (meth)acrylate (SR  499) and polyfunctional (meth)acrylates containing hydroxyl groups but having a hydroxyl equivalent weight of less than 300 g (SR  444). As given in Table 4, Example 9 exhibited a clarity value below 80 (ie 64).

Embodiment 10-15

[0158] Table 5 lists the components of each photocurable composition noted in Examples 10-15. The numerical values ​​in Table 5 represent the wt% of each component based on the total weight of the photocurable composition.

[0159] Example 10

Example 11

Example 12

Example 13

Example 14

Example 15

epoxy

DER 332

5

DY 026 1

13.5

37.5

Heloxy 48

24

24

10.7

Heloxy 84

6

Heloxy 107 2

18

Uvacure 1500

40.2

40.2

48

47.25

30.625

50

Polyol

Arcol Polyol LHT-42 3

6

6

20

Dianol 320 4

8

8

K-Flex 188 5

15

Phenoxy resin

PKHP 200 6

2

2

Alkoxylated Acrylates

SR 415 7

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A photocurable composition comprising:(a) a cationically curable component preferably formed from one or more epoxy compound(s), (b) an acrylate component having no or a low amount of hydroxy groups preferably dipentaerythritol hexaacrylate, (c) a polyol component, preferably a polyether polyol, (d) a cationic photoinitiator; and (e) a free radical photoinitiator. The composition may produce when cured three-dimensional articles with high clarity and improved mechanical properties.

Description

technical field [0001] The present invention relates to a photocurable composition particularly suitable for the production of three-dimensional articles, to a method for producing cured articles having high clarity and improved mechanical properties from the composition and in particular three-dimensional articles. Background of the invention [0002] Three-dimensional articles produced by rapid prototyping techniques such as stereolithography, from traditional hybrid compositions (compositions with cationically curable compounds and radically curable compounds), tend to have low resolution. In particular, the articles may be hazy and / or highly pigmented. Much of this haze can be attributed to the poor miscibility of the cationically curable compound and the radically curable compound, exacerbated by their different reaction rates. It is well known that cationically curable compounds cure slower than radically curable compounds. Additionally, traditional compositions cont...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/00G03F7/038C09D11/10C09D11/101
Inventor D·约翰逊F·特兰J·W·冯
Owner HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com