Page 18 - Pavimenti cosmateschi _Neat

The Solvents

Paraffin hydrocarbon, also called Alkane, any of the
saturated hydrocarbons having the general formula
CnH2n+2, C being a carbon atom, H a hydrogen atom, and
an integer. The paraffins are major constituents of natural gas
and petroleum. Paraffins containing fewer than 5 carbon
atoms per molecule are usually gaseous at room temperature,
those having 5 to 15 carbon atoms are usually liquids, and the
straight-chain paraffins having more than 15 carbon atoms per
molecule are solids. Branched-chain paraffins have a much
higher octane number rating than straight-chain paraffins
and, therefore, are the more desirable constituents of gasoline.
The hydrocarbons are immiscible with water.
All paraffins are colourles.

Paraloid™ B72

Solid Grade Thermoplastic Acrylic Resin It is compatible with vinyls, cellulosics, chlorinated
Description rubbers, and silicones. It is well suited for white
PARALOID B-72 general-purpose thermoplastic acrylic resin is and metallic aerosols, clear coatings for wood,
similar to PARALOID B-66 acrylic resin but capable of forming nitrocellulose modified coatings for general
softer films. The approximate hardness (KHN) is 10-11 product finishing, pigment dispersion
compared to 12-13 for PARALOID B-66 resin. (fluorescent), flexographic printing inks, and
PARALOID B-72 acrylic resin is unique in possessing a high gravure plastic coatings.
tolerance for ethanol. The property allows its use in applications Solubility
not tolerant of strong solvents. The alcohol dispersions may be Information about the solvent compatibility of
cloudy or milky. However, they form clear, coherent films. PARALOID B-72 acrylic resin can be found in
PARALOID B-72 has low reactivity with sensitive Rohm and Haas brochure 82A114—PARALOID
phosphorescent and luminescent pigments to produce stable, Solid Grade Resins, Solvent Selection Char.
durable, non-yellowing coatings.

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