TECHNICAL DETAILS OF SHREECRAL S-525

Physical appearance SS-525 is a crystal solution of medium,
free flowing viscosity without any type of visible particles.

PHYSICAL APPEARANCE SS-525 is a crystal clear solution of medium, free flowing viscosity without any type of visible particles.
CHEMICAL NATURE - It is a polymer of more than three very active acrylic monomers in solvent phase by strict control of the rate of reaction between the very active monomers by means of Controls in the hands of
highly experienced technologists. The dried film of the product is resistant to Kerosene, Diesel & Petrol.
NON - VOLATILES 48 - 50 %
pH VALUE of Water product : 4 - 6 boiled in water 1 : 1 by weight and the filtered water is cooled and pH is observe
Free monomer after : Below 0.5% neutralizing acidity of solvent and other constituents
Film on glass Very clear without any particles / coagulam
Tack on film Excellent
Adhesion Value at 30 gsm Excellent
Adhesion value at 30 gsm Drop in adhesion value is less than 10% of its after 7 days of 30°C initial value.
Flow of product when freely Very free flow (no gells or lumps.)
Viscosity by Brookfield RVT Model Sp.No.4/5, at 10 rpm at 30ºC 35 - 55 poises


COMPATIBILITY : Shreecral SS-525 is compatible with solvents like ethyl acetate, isopropyl acetate, isopropyl acetate, butyl acetate, toluene, xylene, to some extent with ketones like acetone, MEK, MIBK.

SS-525 can be plasticised (low%) with DBP, DOP for the manufacture of mosquito, cockroach masks. Oil / Solvent soluble colours can be blended for coloured tapes / stickers. Noncompatible with alcohols, water, pigments.

APPLICATION TECHNIQUES

For continuous applications like roll/roll sticker manufacture, Rigid PVC precoating for later application to plywood for CTV cabinets, vehicles the product is applied by roller. For small jobs, the thinned resin can be applied by brush too. But the brushes must be cleaned immediately after use.

Closed cell PE, PP, PU, Foam precoating for Automobile Industry by roller coating or knife coating.

USE OF SHREECRAL S-505

1. For the manufacture of tapes like BOPP/PVC/PET/CELLOPHANE/PAPER where permanent tack and high peel strength, resistant to kerosene, diesel, petrol is essential.

2. The latest fashion of manufacture of colour TV cabinets with precoated and protected by silicone release paper Rigid PVC. Here the PVC is coated on roller assembly with 30 - 35 gsm of resin on dry basis.

3. SS-525 is non-toxic after the film is dry. Hence it is being used for making PET/PVC based Band Aids. Similarly due to non-toxicity and very negligible free monomer content.

4. SS-525 when mixed with primary/secondary/cyclic amines in the ratio 100 pbw SS-525, 0.005-0.05 pbw of these amines gives a thermo setting composition for permanent bonding of plastic to plastic, plastic to any hard surface.

5. SS-525 film being resistant to kerosene, diesel & petroleum, has vast potential for Automobile Industry to fix PVC sheets, rexin, foam in Bonnets, etc. Due to its cross-linking property, it has good heat resistance.

ADVANTAGES OF SHREECRAL S-505

1. Being manufactured under the personal supervision of highly qualified & experienced persons, the product has excellent consistency regarding viscosity, strength, clarity, molecular weight distribution and flow properties.

2. Due to uniform copolymerisation, the shelf-life is longer compared to a product polymerisation hapzardly just to get viscosity.

3. The product has better shelf life.

DO'S & DO NOT'S

1. Do not mix any other inferior product available in the market under disguise of any acrylic copolymer in solution form. As the copolymerisation reaction is very sensitive, narrow range of molecular weight distribution is obtainable only under stringent controls by higher skilled technologists.

2. Check the peel strength for every lot/batch before and after exposure on high temperature ( 70 - 80ºC).

3. Check the supply for any micro-gells, which can cause non-uniform application and later non-uniform tack.

4. Do not keep the product under abnormal conditions of storage, like temperatures above 40 high temperature ( 70 - 80C to avoid solvent loss and viscosity pick up due to solvent loss or cross linking.

5. Do not keep the drum/carboys filled with SS-525 open near heat or flame. SS-525 is highly flammable due to ethyl acetate.

6. As it is a solvent based system, shelf life is not warranted above 3 months. Hence, complaints what so ever will not be entertained after 30 months from the date of delivery.

Packing Size: 200 Kg., 50 Kg. and 5 Kg.

Note: The above data, suggestions and recommendations are given in good faith without any guarantee whatsoever.

 
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