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Solbin® A

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Datasheet: Solbin A TDS 3.2016

SDS: SOLBIN A GHS

Solbin A is a thermoplastic resin consisting of polyvinyl chloride, polyvinyl alcohol and polyvinyl acetate.

Product Description

Product characteristics

  • Soluble in ketones, esters and chlorinated hydrocarbons. Use aromatic hydrocarbons as diluent solvents. Insoluble in alcohol, oil and aliphatic hydrocarbons.
  • Film made from Solbin A is tasteless, odorless, and is unaffected at room temperature by alkalis, mineral acids, alcohol, oil and aliphatic hydrocarbons.
  • Combines high water resistance with low moisture permeability and low water absorption.
  • Offers superior mechanical properties such as anti-abrasion, flexibility and non-tackiness.
  • Imparts good, stable dispersibility to pigments and magnetic powder in paints and dried layers even at high packing density.
  • Wide choice of coating formulations due to compatibility with various resins including polyurethane, epoxy resins, NBR, isocyanate, etc.
  • When included in the hydroxyl group, Solbin A reacts with organic radicals such as isocynante to perform cross linking.

General properties

[table class=”solbin”]
Attributes,”Test Results”
Appearance,Light yellow powder
Grain Size,Passes wholly through 28 mesh sieve
Bulk Density (g/cc),~ 0.7
Composition (% weight),
VC,91.5 ± 1.5
VAc,3.0 ± 1.0
VA,5.5 ± 0.5
Degree of Polymerization,420 ± 350
Molecular Weight Mn,3.0 X 104
Glass Transition Temp. (°C),76° C
Solution Viscosity (mPa·s) (MIBK/TOL. 20% @25°C),220 ± 30
[/table]

Applications
  • Printing Ink-Solbin A is used for coating and gravure printing ink, adding gloss to create a better decorative effect.
  • Metal Container Paints-Solbin A is used for lining food and beverage containers. Its anti-corrosiveness makes it an excellent choice for use in container lining, including applications for medicines and cosmetics. It produces a tough film that makes it ideal for coating steel and galvanized tin plates that will be fabricated later.
  • Paper and Textile Coating-Solbin A provides a waterproof protection, adding gloss for a better decorative effect.
  • Magnetic Paint-Due to Solbin A’s excellent dispersing ability for inorganic pigments such as magnetic powder, it is used as a binder and dispersing agent for magnetic paint used to produce magnetized cards and tapes
How to Use
  • To ensure Solbin A quickly goes into solution it is recommended to disperse it into a weaker solvent such as toluene and xylene then blend with the stronger solvent.
  • Solbin A is usually dissolved in a combination of both ketone (e.g. MEK and MIBK) and aromatic hydrocarbon (e.g. toluene and xylene) solvents in equal proportions, to produce a solution of 15%-20% concentration by weight. For coatings on a porous substance, (paper or cloth), faster drying solvents such as MEK and acetone are recommended.
  • For Spray coating, MIBK is used. For baking on metals, ketone with a high boiling point such cyclohexanone is used. For roll coatings, cyclohexanone or isophorone are sometimes used. Heating to around 50°C and sufficient agitation are required to speed up dissolving.
  • In order to provide proper flexibility, resilience and adhesiveness to film, 5-20 PHR of plasticizer are added. The kind and amount of plasticizer to be added can be determined in the same manner as in the method of blending polyvinyl chloride resins.
  • Most common pigments can be employed.
  • Stabilizers against heat and light are used, as with conventional polyvinyl chloride resins. The addition of about 0.2% propylene oxide, in this case, can prevent the corrosion of containers and change in paints in storage.
  • Any method of coating, including spraying, roll coating and others, may be used. For roll coating, a solution of 200-400
    seconds in Ford Cup No.4 viscosity should be used. For Spray applications a solution of 60-80 seconds Ford Cup No.4 viscosity should be used at an air pressure of 98-100psi and a liquid pressure of 20-30psi.
  • Solbin A does not usually provide satisfactory adhesion through air drying alone. The following chart provides the degree of adhesion to various surfaces by air drying
  • Short-time baking at 170-190°C will significantly improve adhesion and surface gloss. When primers are used, sufficient adhesion may be obtained without baking.