VINNOL^® H 40/43

General

Typical applications:

Solventbased surface coating of

• plastic, in particular polar and/or pretreated plastic surfaces
• minerals (e.g. for applications in the construction sector)
• metal
• fabric
• paper

Additive for reactive (peroxide- or UV-curing) coatings (shrinkage reduction, intercoat adhesion and flexibility improvement).

Processing

VINNOL^® H 40/43 is generally used in dissolved form.

Ketones and esters are particularly suitable solvents for VINNOL^® H 40/43. Ketones are the best solvents for VC copolymers, although only esters or ester-glycol ether mixtures as well as ester-aromatic mixtures can also be used for VINNOL^® H 40/43. While aromatic hydrocarbons can be used to a considerable extent and alcohols to a limited extent in combination with true solvents, aliphates in particular are non-solvents for VINNOL^® H 40/43.

VINNOL^® H 40/43 is also soluble in various monomers (e.g. styrene, methyl methacrylate, 2-ethylhexyl acrylate, 1,6-hexanediol diacrylate and others).

To prepare the solution, it is recommended to first introduce solvents and liquid additives and then add VINNOL® with stirring. The polymer powder should preferably trickle directly into the stirrer spout in order to achieve uniform wetting and rapid dispersion. Depending on the solvent type, concentration and stirring system, a dissolution time of approx. 30 minutes to approx. 2 hours at room temperature is recommended until a clear, particle-free solution is achieved. By heating the mixture to temperatures of up to approx. 50°C, depending on the solvent system, faster and more complete clear solubility can be achieved.

More information about SOLUBILITY & VISCOSITY behaviour of this product can be seen and downloaded in the DOCUMENTS area at this LINK:

www.wacker.com/h/c/vinnol-h-4043/p/000009614

Monomer and polymer plasticizers such as phthalic acid esters, adipic acid esters, sebacic acid esters, citric acid esters, phosphoric acid esters, epoxidized compounds and chlorinated paraffins are suitable for plasticizing VINNOL^® H 40/43.

VINNOL^® H 40/43 is fully compatible with all other VINNOL® coating resins. There is also good compatibility with many acrylic polymers and ketone resins, as well as many epoxy resin systems and, to a lesser extent, ester-soluble nitrocellulose. Alkyd resins, which are not supplied in aliphatic solvents, are usually well tolerated. Polyvinyl acetate and polyvinyl butyral cannot usually be combined with VINNOL^® H 40/43. The compatibility of VINNOL^® H 40/43 with other polymers must be checked on a case-by-case basis.

If pigments or dyes are used, their compatibility with VINNOL^® H 40/43 must be checked in advance. Some pigments/dyes can produce thixotropic effects and/or negatively affect adhesion. In the case of zinc pigments, it should be taken into account that they can reduce the decomposition of VC copolymers at elevated temperatures. catalyze. This also applies to iron oxide pigments.

Despite their good intrinsic stability, it is necessary for some applications to stabilize coatings based on VINNOL^® H 40/43 against heat and/or UV light. For thermal stabilization, epoxy compounds such as epoxidized soybean oil, liquid epoxy resin or glycidyl ether are often sufficient for low requirements. For higher requirements, the use of calcium/zinc or organotin stabilizers is advantageous. For outdoor applications, the use of UV stabilizers and thermal stabilizers optimized for this use is necessary.

To avoid risk of discoloration, contact with iron should be avoided both during preparation of the solution and during subsequent storage of the product. VINNOL® -based surface coating compounds should be stored in coated containers.

Packaging

VINNOL^® H 40/43 is packed in 25-kg, coated three-ply paper bags containing a polyethylene liner.

Storage

Store VINNOL^® H 40/43 under dry conditions and at room temperature (below 25 °C). If proper conditions are maintained, the product has a shelf life of at least 12 months from the delivery date if stored in the original, unopened containers. Beyond its recommended shelf life, the product is not necessarily unusable, but the user should perform quality control regarding the properties relevant to the application.