Mastic rosin

It will also dissolve natural and synthetic resins like elemi, "Cumor" resins, ester gum, moniio, mastic, rosin and sandarac. It is used principally as a law-boiling component in nitrocellulose lacquer formulations. 

Glycol diocetote is a colorless liquid having a foint odor resembling that of ethyl acetate. It will dissolve a wide range of cellulose esters, camphor, dammar, ester gum, elemi, mastic, rosin and sandarac. When it is mixed with active solvents its range of solubility is increased far a wide variety of cellulose esters and ethers and for natural and synthetic resins. 

Base-plate wax compositions are generally regarded as trade secrets. A substantial percentage of paraffin is usually present, probably 50—80 wt %. Beeswax [8012-89-3] camauba wax [8015-86-9] ceresin, microcrystalline waxes, Acrawax C (Glyco Products Co. Inc.), mastic gum, rosin [8050-09-7] and synthetic resins may make up the balance of the formulation. Base-plate waxes are generally sold in sheet form about 1.3 mm thick, 75 mm wide, and 140 mm long. 

Table 4 Hsts flow properties of a set of impression waxes the exact compositions of which are trade secrets. The materials that have been identified in the compositions are paraffin, ceresin, vegetable waxes, rosin, mastic gum, and spermaceti.

Natural rubber displays the phenomenon known as natural tack. When two clean surfaces of masticated rubber (rubber whose molecular weight has been reduced by mechanical shearing) are brought into contact the two surfaces become strongly attached to each other. This is a consequence of interpenetration of molecular ends followed by crystallisation. Amorphous rubbers such as SBR do not exhibit such tack and it is necessary to add tackifiers such as rosin derivatives and polyterpenes. Several other miscellaneous materials such as factice, pine tar, coumarone-indene resins (see Chapter 17) and bitumens (see Chapter 30) are also used as processing aids. 

Those wliich yield a volatile oil when distilled with water and one or more acid resins, as in the foregoing but in addition, a neutral one, generally capable of being crystallized, Animi, elemi, and earanna rosins, mastic, vegetal, or palm wax, and several others, are of this order,... 

When the printed pattern is applied to the ware above tlie glaze, the mordant receives a larger proportion of gum mastic but where enameling colors are used for the muffle, a sine is applied to the surface of the glaze, composed of spirits of turpentine, with a small portion of gum mastic dissolved in it sometimos rosin and sugar of load being added.. 

Use Hot-melt and pressure-sensitive adhesives, mastics and sealants, varnishes, ester gum, soldering compounds, core oils, insulating compounds, soaps, paper sizing, printing inks, polyesters (formed by reaction of the conjugated acids of rosin with acrylic acid, followed by reaction with a glycol). 

Products and Uses Derived from pine trees. Used in adhesives, varnishes, soaps, inks, rosin bags, and mastics. 

Chem. Descrip. Dimerized rosin CAS 8050-09-7 EINECS/ELINCS 232-475-7 Uses Used for soldering fluxes, construction mastics, and various adhesives and protective coatings food pkg. adhesives, coatings, paper, cellophane, polymers, films, rubber articles defoamer In food-contact paper/paperboard... 

Chem. Descrip. Pentaerythritol ester of tall oil rosin CAS 8050-26-8 EINECS/ELINCS 232-479-9 Uses Tackifier for NR, SBR, IR, SBS, hot-melt adhesives, mastic adhesives, contact cements, and pressure-sensitive adhesives in emulsion form used in SBR, natural rubber, and neoprene latex adhesives food pkg, adhesives, coatings, paper, closures with sealing gaskets for food containers defoamer in food-contact paper/paperboard Features High-melting... 

Rosin family s most common form of adhesive is colophony, a hard amorphous substance derived from the oleoresin of the pine tree. This material is applied in solvent solution form as a hot-melt mastic. It has poor resistance to water, is subject to oxidation, and has poor aging properties. Plasticizers are usually added to reduce its brittleness. Bond strengths are moderate and develop rapidly. These materials are used as temporary adhesives in bonding paper and as label varnishes. They are also used as components of PSAs based on styrene-butadiene copolymers and in hot-melt adhesives and tackifiers. These materials have been largely replaced by synthetic-resin adhesives. One specialized form of rosin adhesive is Canada Balsam, covered by the obsolete Military Specification MIL-C-3469C, titled Canada Balsam. This material was intended for cementing optical elements. 

Rosin (colophony, in soldering flux and asphalt-type mastic Adams 1990)... 

FIGURE 12.1 Typical terpenes. (a) Isoprene is the nominal buSding block of the teipenoids. (b) Pinene is a major constituent of oil of turpentine, (c) Abietic acid is a major constituent of rosin (colophony). (d) Masticadienonic acid is a major constituent of mastic resin. The wavy lines in (b) and (c) indicate the junctions between the five carbon monomer units (isoprene), two of which form a terpene. 

Although unmodified rosin has some application in low quality mastics and construction adhesives, rosin is typically modified to enhance its oxidative and thermal stability and to obtain a range of physical properties such as softening point and melt viscosity. Rosin is a complex mixture of tricyclic unsaturated resin acids with some nonacidic components. At least... 

Though the words plastics and resins sometimes are used interchangeably, workers in the polymer industry generally make a distinction between them. Originally resin referred to the natural exudates of plants and trees such as rosin, copal, amber, elemi, kaure, manila, mastic, and batu. Later the word also became to be used for resin-like substances of animal origin such as shellac and casein. 

Uses Tackifier in mfg. of paper size intemiedlale in rosin deriv. prod. printing ink binder tackifier in sealants and mastics starling point rosin for resin esters food-... 

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