Terpene solvents

In summary, D-limonene has been exploited with interesting results in polymer chemistry however, it remains to be seen whether its chirality can be used to induce similar effects in small molecule syntheses. Many of the benchmark reactions e.g. Diels-Alder, Michael addition) used in the alternative solvent field are reactions of olefinic substrates and therefore could not be performed successfully in a terpene solvent. 

Combinations of Burco TME and Burco FAE can be used to produce microemulsions with terpene solvents such as d-Limonene. This combination can also be used as an emulsifier for mineral spirits, varsol, kerosene, etc. With these petroleum solvents, microemulsions can be prepared by increasing the level of surfactants or the use of a water soluble solvent such as Burcosolv TM. 

DIPENTENE NO. 122 a terpene solvent with a pleasant terpene odor obtained by fractionation of oils extracted from pinewood, meets the Federal specification for commercial dipentene. It can be used as a component in solvent systems for oleoresin-based coatings, and as an antiskinning agent. Other uses include the production of dipping finishes and various chemical specialties. 

SOLVENOL 226 terpene solvent is a pale yellow to near colorless liquid that has high solvency for resins, waxes, and greases. Of pinewood origin, it is a mixture of monocyclic terpenes rich in para -rnemhane. It is used as a solvent in the manuficture of deanmg compounds textile dyes waxes and polishes for floor, fiunimre, leather, and shoes and in other chemical specialties. 

Table 2.122 Selected Properties of Some Common Terpene Solvents (43)...

In another invention, a modifier is introduced to increase the adhesion of asphalt/wa-ter emulsions to aggregates. Emulsified asphalt is not so deleterious to the environment but its performance suffers from aggregate delamination. In yet another recent invention, terpene solvent, which is a naturally occurring (but never in this high concentration), biodegradable material, was used to replace the mineral spirits, xylene, trichloroethane, toluene, or methyl ethyl ketone normally used in cutback formulations (cutback asphalt is a dispersion of asphalt in a suitable solvent to reduce viscosity and allow for cold application). The two other patents discuss inventions leading to an improvement of high and low temperature properties of asphalt with no special impact on reduction of solvents used. 

Solvents are introduced into the paint formulation to dissolve the binder and to provide adequate fluidity of the paint to allow it to be applied. The most important characteristics of solvents are their capacity to dissolve the resins and their volatility, which controls the speed of evaporation. Solvents employed in solvent-based products are hydrocarbons (both aliphatic and aromatic compounds), oxygenated solvents (frequently alcohols, esters, ethers, or ketones), and terpenic solvents in general, mixtures of solvents are used in paint manufacture. 

Methyl chavicol n. Ether constituent found in some terpene solvents. Boiling range, 215-216°C. 

Venice turpentine n. Same as larch turpentine, the oleoresin of the European larch tree (Larix europea or Larix deciduas). The term is also now used widely to describe the clear yellow liquid portion of pine oleoresin, or a synthetic product of similar composition made by dissolving rosin in a terpene solvent. 

If condensate is appreciable or if it is known to accumulate near the wellbore, then a solvent stage is acceptable. An aromatic solvent, such as xylene, is used. Typically, 10-75 gallons per foot (gal/ft) are adequate, but a preferable volume is 25-50 gal/ft. Alternatively, another aromatic solvent, or a terpene solvent maybe combined with acid and surfactants. It is preferable to keep them separate, if possible. The purpose is either to displace oil away from the acid stages, to prevent sludge or emulsion, or to remove paraffin/ asphaltene wellbore deposits. 

Terpene solvents are derived from the sap of the pine tree examples are turpentine, dipentene, and pine oil. 

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