Dammar wax

Resene, J n. Dammar is a mixture, and one of its constituents is resene, sometimes known as dammar wax. It is this material which is removed in the so-called dewaxing process, which is an essential operation to make the dammar suitable for use in nitrocellulose lacquers. 

Cadinene C15H26 Decahydro-1,6-dimethyl-4-(1 -methylethyl)-naphthalene B.p. 136 Sesquiterpene, found polymerized in dammar wax ... 

The compositions of sheet and shape waxes are also trade secrets. However, they are blends of various proportions of paraffin, microcrystalline waxes, camauba wax, ceresin, beeswax, gum dammar, mastic gum, and possibly other resins. Sheet waxes are marketed in square sheets approximately 80 by 90 mm. Various thicknesses are available from 32 gauge (0.5 mm) to 14 gauge (1.63 mm). 

Sticky waxes are generally composed of resins and wax. A high resin content gives viscosity to the melt, a long plastic range, and a brittle fracture when cooled. No modem formulas are available, but the older recipes usually had rosin, beeswax, and gum dammar as the essential constituents. 

The stems of wax matches consists of a wick of twisted cotton threads, coated with wax, or more generally with mixtures of stearin, paraffin, and gum dammar or gum opal. These matches burn for a longer time than matches made from wood. 

Stearin was used, at one time, with the addition of a little resin, in the preparadoo of the wood for matches de luxe." In the manufacture of matches it is unnecessary to use the hardest and whitest sorts of stearin, as the softer kinds have been found to give, even better results. Stearin has been replaced by paraffin for making wood matches, but it is still used, with gum opal or dammar for wax match stems. In the match industry the only test required is to determine the melting point of the stearin before use. In this connection the Shukoff method for determining the melting point of paraffin wax p. 96) is used. ... 

Di-n-propyl ketone is a colorless, stoble liquid hoving a pleosont odor. It is miscible with mony orgonic solver ts, and dissolves o wide voriety of moteriols, some of which ore crude rubber, nitrocellulose, row and blown oils, many natural ond synthetic resins like dewaxed dammar, manila, rosin, ester gum, and waxes. 

Dewaxing n. Process of removing waxes from natural resins (dammars, shellacs, etc.). 

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