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Introduction to Products Developed by Us

TBIS® Series

Bisphenol derivatives

Reflecting the market needs for high functional products, Taoka is developing various bis-phenol derivatives which is called "TBIS®".
TBIS® products is an excellent raw material for optical plastics which require high transparency and heat-resistance.
Especially, Fluorene-type products have a high refractive index and low birefringent due to its "Cardo Structure".

Chemical name
[product name]
StructureTypical properties, etc.Stage
TBIS®-G
CAS No.117344-32-8
CSCL4-1748
AppearanceWhite Crystalline Solid
Melting point164℃
Refractive index1.62
Commercial
CHBP-F
CAS No.843-55-0
CSCL4-44
AppearanceWhite Crystalline Solid
Melting point194℃
Refractive index1.59
Commercial
TBIS®-RX
CAS No.4081-00-9
CSCL-
AppearanceWhite Crystalline Solid
Melting point270℃
Refractive index1.65
Pilot
TBIS®-ZP
CAS No.2115022-46-1
CSCL-
AppearanceWhite Crystalline Solid
Melting point203℃
Refractive index1.67
Pilot

CSCL:Chemical Substances Control Law

[Applications] Raw Monomer or Modifier for Optical Resin or Electronic Materials.

Epoxy delivertives

This product has a high refractive index, transparency and heat-resistance due to it's unique structure containing a fluorene skeleton.
Compared to existing bisphenol fluorene epoxy resins, these compounds have a high refractive index, high solvent solubility, and excellent handling characteristics.

Name of chemical
[product name]
StructureTypical properties, etc.Stage
TBIS®-GG
CAS No.259881-39-5
AppearanceLight Yellow Sticky Solid
5% weight Loss Temp.363.4℃
Viscosity (150℃)52.5mPa・s
Refractive index1.60
Pilot
TBIS®-RXG
CAS No.47769-72-2
5% weight Loss Temp.342℃
Viscosity (150℃)374mPa・s
Refractive index1.62
Laboratory

[Applications] Electronic Materials (Photoresist, Mounting Agent), Optical Materials, Adhesive, Coating Materials, Laminating Agent, Additives etc.

Acid dianhydride derivative

This product has a high refractive index, transparency and heat-resistance due to it's unique structure containing a fluorene skeleton.
When used as a monomer for polyimide, the workability will be improved due to its superior solvent solubility.

Name of chemical
[product name]
StructureTypical properties, etc.Stage
TBIS®-RXN
CAS No.1830316-18-1
CSCL-
AppearanceWhite Crystalline Solid
Melting point332℃
Refractive index1.63
Laboratory

[Applications] Raw Material for Polyimide or Polyamide, Curing Aagent for Epoxy Resin, or Urethane.

Episulfide delivertive

The episulfide shows the characteristic of curing at low temperatures.
The cured material is also low in the odor that is unique to sulfur compounds and excels in transparency while also having properties such as a low dielectric characteristic and low water absorbency.

Name of chemical
[product name]
StructureTypical properties, etc.Stage
TBIS®-AHSP
CAS No.2489336-20-9
Appearanceviiscous liquid
Viscosity (25℃)30Pa・s
Refractive index1.53
Pilot

[Applications] Adhesives, Additive of epoxy-resin etc.

Acrylate derivative

TBIS®-ZPC is an acrylic monomer with a fluorene skeleton, and has high solvent solubility while achieving a high refractive index.
It also has excellent storage stability at room temperature and can be stably handled without crystallizing in solution.

Name of chemical
[product name]
StructureTypical properties, etc.Stage
TBIS®-ZPC
CAS No.2115022-49-4
Appearanceviiscous solid
Transparency T40090.40%
Refractive index1.63
* Sold in 40% toluene solution
Pilot

[Applications] Electronic Materials, Optical Materials, Additives etc.

* We also offer examination of synthesis for various diols, diamines, acid dianhydrides, epoxy, acrylate etc.

LCP adhesive AH7042X

Excellent heat resistance, low outgassing, and improved adhesive property at high temperatures

Characteristics

  • Excels in heat resistance and high temperature durability, and can be utilized in LCP relay sealing
  • No need for the mixture of the main agent and curing agent, which is essential for two-component epoxy
  • Generates little gas during the curing process (low outgassing)
  • Can be adjusted to the viscosity and degree of dripping needed to suit the application
GradeHigh heat resistance
New productDeveloped productExisting product
Name of productAH7042XAH7042X-5AH8042KLAH1032K
Standard curing conditions110℃×60 minutes100℃×60 minutes
Viscosity(Pa・s/25℃)35323530
Thixotropic index(25℃)221.52
Tg(℃)[TMA]129134119113
LCP
TSS
(N/mm2)
Initial101098
After heat aging7773

*LCP manufactured by Company S used. After heat aging ... Measured after exposure at 270℃×10 minutes.

Flexible AH2062UX Developed product

Flexible grade, excellent damping, low noise

Characteristics and physical properties

Name of product2042UK2062UKCompetitor’s product
High flexibilityHigh adhesion
Viscosity(Pa・s/25℃)335846
Thixotropic index(25℃)1.71.71.7
Gel time(min/100℃)32>100
Physical properties of cured materialHardness(25℃)A 64A 87D 40
tanδ(*1)0.210.280.16
E'(MPA)(*1)69381
Tensile-shear adhesion strength
(N/mm2)
Standard curing conditions120℃×60 minutes120℃×60 minutes110℃×120 minutes
Steel51013
PBT3300243
T-type peeling adhesion strength
(N/mm2)
Steel-21
Aluminum-21

(*1) DMA 30℃ 10Hz

TACKIROL® 201 (alkylphenol-formaldehyde resin)

TACKIROL® 201 is known as a resin crosslinking agent with excellent performance.

TACKIROL201L30

Advantages of liquefaction
Improvement in the dispersibility in polymers
Blocking resistance
Prevention of dust scattering