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Advanced Chemical Solutions for Displays

Development of precision chemical materials to support high
integration of semiconductor devices and advanced display systems
Maleimide / Melamine Derivatives (HM3 / BPDA)

Maleimide: A Key Raw Material for OCR

Maleimide is used as a raw material for special coating substances in displays and semiconductors. It is transparent, has high mechanical strength, and absorbs UV rays. Due to these properties, maleimide is added as a binder (adhesive) in various LCD films during the acrylic acid manufacturing process, and is also used in TSPs and organic insulating films. Therefore, products require extremely low metal content and high purity.

In semiconductor manufacturing, maleimide also plays a key role in the production of chemical amplification-type photoresists, serving as a photo acid generator (PAG) or thermal acid generator (TAG). Due to technological limitations, conventional Chinese products with insufficient thermal stability have posed challenges. Production has been difficult both domestically and internationally, resulting in supply shortages.

Our R&D-developed maleimide product line has improved thermal performance and, for the first time in the world, has achieved a purity of over 99.9%, with total metal content below 45 ppb, and is now produced in a mass-production system delivering the highest quality maleimide available.

Benefit:

Application:

Synthetic intermediate:

Maleimide Series

M1025

Chemical name: Maleimide

CAS No.: 541-59-3

M1025 Structure

Typical Characteristics

  • Appearance: White crystalline powder
  • Purity: 99.0% minimum
  • Melting point: 91–92°C
  • Metal content (ICP mass): 100 ppb max
  • Water content: 0.2% max

Application

  • PAG (Photo Acid Generator)
  • Monomer adhesion
  • Polymer for optical clear resin for TSP
  • Organic insulating coating
  • Mono- and bis-maleimide based polymers for high-temp use (up to 250°C)
  • Polymer for drug delivery systems
  • Liquid crystal for display panel

PM1025

Chemical name: N-Phenylmaleimide

CAS No.: 941-69-5

M1025 Structure

Typical Characteristics

  • Appearance: Yellow solid
  • Purity: 99.0% minimum
  • Melting point: 91–92°C
  • Boiling point: 135°C (0.48kPa)
  • Metal content (ICP mass): 1 ppm max
  • Water content: 0.2% max

Application

  • High HDT thermoplastics resin
  • Coating, adhesives
  • Intermediate for pharmaceuticals
  • Agricultural chemicals
  • Bactericides
  • Fungicides / Vulcanization of rubber
  • Photosensitive resins / Insulating varnishes

CHMI1050

Chemical name: N-Cyclohexylmaleimide

CAS No.: 1631-25-0

CHMI1050 Structure

Typical Characteristics

  • Appearance: White flake
  • Purity: 99.0% minimum
  • Melting point: 87–90°C
  • Boiling point: 125°C (1.37kPa)
  • Metal content (ICP mass): 1 ppm max
  • Water content: 0.2% max

Application

  • Thermal properties-related optical applications
  • Photoengraving system for print circuit board with
  • photosensitive polymer
  • Heat Resistant PVC to improve thermal properties with PVC
  • Optical Disks to improve thermal properties with PMMA

BMI1050

Chemical name: Bismaleimide

CAS No.: 13676-54-5

BMI1050 Structure

Typical Characteristics

  • Appearance: Light yellow
  • Purity: 99.0% minimum
  • Melting point: 87–90°C
  • Boiling point: 125°C (1.37kPa)
  • Metal content (ICP mass): 1 ppm max
  • Water content: 0.2% max

Application

  • Coating, adhesives
  • Intermediate for pharmaceuticals
  • Vulcanizaion of rubber
  • Photosensitive resins

Chemical name: 1-Ethylcyclopentyl

methacrylate

CAS No.: 266308-58-1

1-Ethylcyclopentyl methacrylate Structure

Typical Characteristics

  • Boiling point: 225.9°C
  • Metal content (ICP mass): 1 ppm max
  • Water content: 0.2% max

Application

  • Widely used as intermediate for chemical reagents and fine chemical

Chemical name: Gamma-Butyrolactone

methacrylate (GBLMA)

CAS No.: 195000-66-9

GBLMA Structure

Typical Characteristics

  • Appearance: Viscous liquid
  • Boiling point: 296.8°C
  • Metal content (ICP mass): 1 ppm max
  • Water content: 0.2% max

Application

  • Widely used as intermediate for chemical reagents, fine chemical and monomer for photoresist resin

A Wide Range of Maleimide Products

Low molecular weight type

CF3 Maleimide
C3F9 Maleimide
Benzene Maleimide

High molecular weight type

High MW Maleimide

Reinforced acrylate copolymer

Copolymer Maleimide 1
Copolymer Maleimide 2

Melamine-Derived Compound HM3

Melamine-Derived Compound: HM3

Applications of Precision Chemical Materials for Semiconductors and Displays

HM3, developed by our company, is a high-purity material (over 99%) with metal content below 50 ppb.

It serves as a crosslinking agent for anti-reflective coatings and negative photoresists.

The key feature of this product is that it is a formaldehyde-free crosslinking agent.

Melamine Resin for Building Materials

HM3, a melamine derivative, is a core substance used in construction materials such as paints, adhesives, and coatings.

Melamine adhesives are produced through a reaction between formaldehyde and melamine. These adhesives are widely used in construction materials due to their excellent performance in quick drying and maintaining strength after curing.

However, HM3 contains about 0.5–1% formaldehyde, and prolonged exposure to environments containing HM3 may release toxic substances that are known to cause Sick Building Syndrome (SBS) and may be carcinogenic.

Recently, due to the risks of formaldehyde, the use of melamine adhesives—along with urea adhesives—in building materials has decreased.

Our company was the first to develop and launch a product that reduces residual formaldehyde to below 50 ppb, effectively solving indoor environmental pollution issues and eliminating the risk of Sick Building Syndrome. In moisture-free environments, formaldehyde is not regenerated during the crosslinking process and is virtually nonexistent after curing and coating.

Major clients come from various sectors, including construction materials, footwear, automotive seats, paints, adhesives, semiconductors, and display industries.

Benefit:

Melamine resin

Chemical name: Hexamethoxymethyl melamine (HMMM, HM3)

CAS no.: 3089-11-0

HM3 구조식

Typical Characteristics

  • Purity: > 99.0%
  • Metal content: < 100 ppb
  • Appearance: White crystal
  • Melting point: 55 °C

Benefit

  • Formaldehyde free
  • Metal free (< 50 ppb)

Products

  • TMSS: liquid
  • TM190: white powder, purity 95%
  • TM1050: white crystalline powder, purity 99%

Application

  • Semiconductor application
  • -cross-linker for photoresist,
  • bottom anti-reflective coating
  • -cross-linker for bottom anti-reflective coating
  • -cross-linker for spin on carbon
  • Display application
  • -cross-linker for optical clear resin
  • -cross-linker for various coating

TM190

Typical Characteristics
  • Appearance: white powder purity: 95.0% minimum
  • Free formaldehyde, n.d (PRweight% 0,05 maximum)
  • Content(non-volatile, % by weight):2%
  • water content: %
Application
  • SOC (Spin On Carbon) crossrinking agent
  • Film coating
  • Electrostatic spray finishes
  • Container and metal deco finishes Inks
  • Inks
  • Automotive finishes
  • Appliance finishes
  • High solids finishes

TM55

Typical Characteristics
  • Appearance: Clear viscous liquid
  • Non-volatile, by weight: 98.0 minimum
  • Color, Gardner 1963: 1 maximum
  • Viscosity, Gardner-Holdt, 25°C: Y-22
  • Viscosity, Cone/Plate, cps 2600-5000
  • Weight/gallon, pounds, approximate 10,0
  • Specific gravity, 25°C: approximate 1,20
  • Refractive index: 1.515-1,520
  • Flash point, Setaflash, 'F:>200
  • Flash point, Tag open cup, F: >200
  • Free formaldehyde, weight%: None Detected
  • *As determined by Foil Method, 45 min at 45°C
Application Areas
  • Coil-coatings
  • Paper coatings
  • Textile finishes
  • Waterbone systems
  • Electrostatic spray finishes
  • Container and metal deco finishes
    • Inks
    • Automotive finishes
    • Appliance finishes
    • High solids finishes

TM1050

Typical Characteristics
  • Appearance: white crystalline powder
  • purity: 99.0% minimum
  • Free formaldehyde, n.d (PR:weight% 0.01 maximum)
  • Content(sam): 5,000ppm max
  • water content: 0.5% max
Application
  • SOC (Spin On Carbon) crossrinking agent
  • Film coating
  • Electrostatic spray finishes
  • Container and metal deco finishes
  • Inks
  • Automotive finishes
  • Appliance finishes
  • High solids finishes

BPDA

3,3,4,4'-Biphenyltetracarboxylic dianhydride
Cas no. 2420-87-3

HM3结构

Product Description BPDA or biphenyl-tetracarboxylic acid dianhydride is a monomer used in the proiduction of polyimides

Key Features & Benefits Physical, Mechanical, Electrical, and Chemical properties under high-temperature conditions

High tesile strength and modulus, and also features outstanding long-term heat resistance.

Minimal content of insoluble particles (foreign material)

High degree of whiteness

Low moisture conten

Chemical Name: 3,3',4,4'-Biphenyltetracarboxylic dianhydride

CAS No.: 2420-87-3

Specification BPDA is a raw material for the polyimide resin component of one of the super-engineering plastics.

It is used for many important information and electronic technology products such as mobile phones

and copying machines.

Typical Characteristics Properties

  • Appearance White to light yellow powder
  • Purity: > 98.0%
  • Melting point: 299 °C
  • Boiling point: 315 / 400Pa
  • Molecular Weight: 294.2
  • Heavy metal: 10ppm max
  • Residual solvent: 0.1% max
  • Dry & Loss: 0.5% max

Application Monomer for Polyimide

  • Polyimide is used for heat-resistant plastic film, electronic circuits, middle transfer and
  • fixing belts of copying machine and printer, color resistt nks, etc.
  • Tape automated bonding (TAB)
  • Chip on film (COF)
  • Lead lock tape
  • High density flexible printed circuit (FPC)
  • Stiffener for FPC Office
  • automation equipment
  • Flexible solar cells
  • Speaker diaphragms(for mobile phones, plasma televisions and car audio, etc.)
  • Heavy electric machinery Office automation equipment
  • Thermal control film for satellites
  • Printed circuit boards
  • Metallic substrates, sheet heating elements
  • Heat resistance wires
  • Usage Contact may irritate skin, eyes and mucous membranes. Used to make other chemicals
Storage
  • 1. Store in an air-tight and light-resistant container
  • 2. Avoid heat and moisture