Oxetane-cyclic epoxy compound, method of preparing the same, and composite sheet for display substrate including the same

Patent metadata

Field	Value
Publication number	US-9249126-B2
Application number	US-201213457741-A
Country	US
Kind code	B2
Filing date	Apr 27, 2012
Priority date	May 12, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

An oxetane-cyclic epoxy compound represented by Formula 1:

where R 1 is hydrogen, a methyl group or an ethyl group.

First claim

What is claimed is:

1. A composite sheet, comprising:
a binder, the binder being formed using an oxetane-cyclic epoxy compound represented by Formula 1,

wherein, in Formula 1, R 1 is hydrogen, a methyl group, or an ethyl group; and
glass fillers,
wherein the oxetane and epoxy reactive functional groups of Formula 1 have an equivalent weight of about 120 g/eq or less.

2. The composite sheet as claimed in claim 1 , comprising: about 60 to about 300 parts by weight of the glass fillers, based on 100 parts by weight of the binder.

3. The composite sheet as claimed in claim 1 , wherein the glass fillers comprise at least one selected from the group of glass fiber, glass fiber cloth, glass fabric, unwoven glass cloth, glass mesh, glass beads, glass powder, and glass flakes.

4. The composite sheet as claimed in claim 1 , wherein the binder is formed using the oxetane-cyclic epoxy compound and a cation polymerizable compound.

5. The composite sheet as claimed in claim 4 , wherein the cation polymerizable compound comprises at least one selected from the group of an epoxy group-containing compound, an oxetane group-containing compound, a vinyl ether group-containing compound, and a caprolactone group-containing compound.

6. The composite sheet as claimed in claim 4 , wherein the binder has a difference in index of refraction of about 0.01 or less from the glass filler.

7. The composite sheet as claimed in claim 1 , wherein the binder is formed using the oxetane-cyclic epoxy compound and a cationic initiator.

8. The composite sheet as claimed in claim 1 , wherein the composite sheet has a glass transition temperature of about 200° C. or higher.

9. A display substrate comprising the composite sheet as claimed in claim 1 .

10. The display substrate as claimed in claim 9 , wherein the substrate has a coefficient of thermal expansion of about 30 ppm/° C. or less, measured by a thermomechanical analyzer (TMA) at 5° C./min from 30 to 250° C.

11. The composite sheet as claimed in claim 4 , wherein a weight ratio of the oxetane-cyclic epoxy compound to the cation polymerizable compound in the binder is about 1:1.5 to about 1:3.

12. A composite sheet, comprising:
a binder, the binder being formed using a cation polymerizable compound, a cationic initiator, and an oxetane-cyclic epoxy compound represented by Formula 1,

wherein, in Formula 1, R 1 is hydrogen, a methyl group, or an ethyl group; and
glass fillers, wherein:
the content of the binder in the composite sheet is about 60 wt % or less, and
the composite sheet has no glass transition temperature at about 250° C. or less.

Assignees

• Kim Young Kwon
• Lee Sang Keol
• Kim Tae Ho
• Lee Woo Jin
• Kim Sung Kook
• Jeon Hyun Ae
• Kim Yun Joo
• Tak Sang Yong
• Park Suk Yeon
• Kang Kyung Nam
• Cheil Ind Inc
• Korea Ind Tech Inst

Inventors

• Kim Young Kwon
• Lee Sang Keol
• Kim Tae Ho
• Lee Woo Jin
• Kim Sung Kook
• Jeon Hyun Ae
• Kim Yun Joo
• Tak Sang Yong
• Park Suk Yeon
• Kang Kyung Nam

Classifications

• C08J5/043

  with glass fibres · CPC title

• C07D407/12 Primary

  linked by a chain containing hetero atoms as chain links · CPC title

• C08J5/04

  Reinforcing macromolecular compounds with loose or coherent fibrous material · CPC title

• Y10T442/2992

  Coated or impregnated glass fiber fabric · CPC title

• Y10T442/10

  Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.] · CPC title