WIVACRYL SP 07 Textiles / Wivacryl SP 07

WIVACRYL SP 07

HARD ACRYLIC BINDER FOR ABRASIVE ARTICLES

Abrasive-coated cloth/paper and non-woven abrasive materials are used as tools for grinding and cutting metal, wood, and rock. These materials are created by applying abrasive grains of Al2O3, SiC, or diamond or by impregnation.

Wivacryl SP 07 is an all acrylic self cross linking binder for nonwovens especially for abrasive and high temperature applications. Being pure acrylic, it is resistant to yellowing at higher temperatures. It has excellent mechanical stability and tensile strength apart from durability to washing and dry cleaning.

PHYSICAL PARAMETERS
Appearance	Milky off white emulsion
Solids (20 minutes@150 degc)	45-46%
Ph (as is)	2-4
Viscosity	200 cps max.
Tg calc	34°C
Charge	anionic

APPLICATION

Wivacryl SP 07 is used for stiff finishes with better durability than the conventional polyvinyl acetate dispersions or vinyl acrylic copolymers. Wivacryl SP-07 is recommended for interlinings for permanent durability.

For coated or backed abrasives: The coated abrasive consists of 3 layers: the backing, binder and the abrasive grain. Wivacryl Sp-07 seems to be an ideal binder for getting the optimum performance.

The recommended dosage level for polyester web is 20% of the binder and varies based on substrate and applications. Nonionic emulsifiers can be added to increase the workability and stability.

For better cross linking UF/MF resins can be used. Though the binder itself is self cross linking, additional catalyst like ammonium nitrate or oxalic acid isrecommended where faster curing is desired.

WITHOUT WARRANTY

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