Titanates & Blocked Polyisocyanates

 

Titanates

Iso-stearoyl Titanate (Super ISTT)

Coupling Agents are molecular bridges at the interface between two dissimilar substrates, such as inorganic / organic filler, fiber or pigment and an organic polymer matrix. Titanium derived coupling agents react with free protons at the inorganic or organic surface. Typically, titanate-treated organics are hydrophobic, organophilic and organofunctional and therefore, exhibit enhanced dispersibility, bonding and chemical interaction with the polymer or organic surface.

When used in filled polymers, they improve impact strength, exhibit melt viscosity lower than that of virgin polymer, at inorganic loadings above 50% and enhance maintenance of mechanical properties during aging.

When the pigment particulate is monolayered with coupling agent, water and air contained within the pigment are removed and replaced by polymer, thereby making the composite moisture and void free. Therefore it eliminates the source or site of various mechanical property depleting mechanisms, such as aging, corrosion, loss of electrical properties, etc. in pigmented, filled and reinforced polymer composites and elastomers.

Titanite surface modifiers contain hydrolysable- OR groups (where R is an alkyl radical such as iso propyi) which can condense with reactive groups on the filter surface, and between 2 and 4 hydrophobic substituent which reacts with the polymer matrix.

Titanates are thought to chemically bond to surface hydroxyl groups of fillers, the hydrophobic substituent on the titanate modifying the properties of the filler surface.

A simple reaction mechanism is illustrated below:

This product has application for Rubber, Polymers & Plastics.

Esterification Catalysts

Our Esterification Catalysts products are formulated to meet your specific needs. The range includes the general purpose catalyst, TNBT which combines high activity with ease of handling and TIPT specially formulated for bis (2-ethylhexyl) phthalate (DOP) And 2-ethylhexyl methacrylate manufacture where high purity is required.

Our range of esterification catalysts is shown below:

Product Name
Application
Features
TNBT
Direct, trans and polyesterification
Freeze resistant to -50°C
TIPT
Direct, trans and polyesterification
High activity, Freezes at 18°C

Physical properties of our International catalysts:

Product
Appearance
Molecular Weight
Ti02 Content (%)
Sp. Gravity @ 25 °C
Boiling Point (°C/mmHg)
Viscosity (mPa.s)
Flash Point (°C)
TNBT
Clear Pale Yellow Liquid
340
23.1 to 23.7
0.996 to 1.005
120/1; 208/10
75±5
40
TIPT
Clear Pale
284
27.8
0.96
120/10
3
45

TNBT

This product has application for Coatings, Printing inks, Polymer and Plastics.

TIPT

This product has application for Coatings, Printing inks, Polymer and Plastics.

Organic Titanates

The adhesion promoters made by Royce International help printing inks to bond with any surface and withstand the rigors of weather and also the attack from various chemicals and solvents. Royce International has a range of such adhesion promoters which bring an entirely different concept in the print technology. The basic product in the adhesion promoters is titanium acetyl acetonate and its formulations Royce International has made these adhesion promoters which are very safe and environment friendly and do not have any hazardous effects. The adhesion promoters can be used on various substrates and are very effective on any surface. Our products use cross-linking mechanism to achieve this type of bonding which gives high heat stability. Super Titanates are essential additives for flexographic and gravure printing inks. An important end use market is flexible packaging.

The main effects which can be achieved are as under:

  • Adhesion improvement to substrate.
  • Improved resistance to cracking and moisture or chemical attack.
  • Improved overall strength of surface by cross-linking.
  • Reduced curing time and faster drying times by improved cross-linking.
  • Pigments dispersion enhanced stability and compatibility.
  • Improved gloss.

The original product TAA-75 (Titanium Acetyl Acetonate) is a basic cost-effective option. Super TAA-65, a non freezing alternative to TAA-75 in Europe where freezing point -200C is required for ease of handling. Additive -101 is for low odor and reduced yellowing.

The Super TAA-75 is widely used in the ink industry. It performs as an excellent adhesion promoter in nitrocellulose based inks. In addition to being non-toxic, it provides inks with increased water, solvent, and heat resistance. This product has application for Printing inks, Polymer and Plastics.

The Super TAA-65 is a solution of Titanium Acetyl Acetonate in ethanol as a solvent. It’s a non-freezing version of Titanium Acetyl Acetonate and is an extremely stable product even in the presence of seeds at -200 deg C. This product has application for Printing inks, Polymer and Plastics.

Additive -101 is a Butyl Titanium Phosphate containing isopropanol and ethanol as solvents. It is a titanium complex for a low odor and low color adhesion promoters and contains no acetylacetone. This product is more resistant to phenolic antioxidant than acetylacetonate and therefore less likely to produce yellow or red color in a system where phenolic antioxidants are present. Moreover, ligand in this additive is more stable than other acetylacetonate based additives and thus at high temperatures it does not decompose and give odor. This product has application for Printing inks, Polymer and Plastics.

Blocked Polyisocyanates

Royce offers 2 special grades of Blocked Polyisocyanates:

  • Super ISO Stable
  • Super CY Stable

Super ISO Stable

Our equivalent / offset to the discontinued product by Bayer, Desmodur AP Stable This product has application for Composites, Electrical and Electronics, Polymer & Plastics.

Super CY Stable

Our equivalent / offset to the discontinued product by Bayer, Desmodur CT Stable This product has application for Paint and Coatings, Composites, Electrical and Electronics, Polymer & Plastics.

Epoxy Resins

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Epoxy Curing Agents

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Epoxy Diluents

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Additives, Modifiers, Accelerators

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Titanates & Blocked Polyisocyanates

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