Manila copal

Manila copal [9000-14-0] Manila hemp Manioc Manjak... 

Natural resins such as dammar and Manila copal have been described in U.S. FDA Regulations (3). The Material Safety Data Sheets for these products issued by the importer describe them as nontoxic and nonaUergenic. 

Pyrolysis in the presence of tetramethylammonium hydroxide (THM)-GC/MS allowed the identification of high- and low-molecular weight components in manila Copal and sandarac fresh and artificially aged samples. The pyrograms showed signals due to the polymer fraction and to free diterpenoids [43]. THM-GC/MS has also been used to determine the molecular composition of Pinaceae resins, allowing the study of fresh, naturally and artificially aged samples [16, 44 46]. 

Py-GC/MS characterisation of diterpenoid resins using online trimethilsilylation with HMDS has been performed on fresh Pinaceae resins, manila Copal, sandarac, and Copaiba... 

D. Scalarone, M. Lazzari and O. Chiantore, Ageing behaviour and analytical pyrolysis char acterisation of diterpenic resins used as art materials Manila copal and sandarac, J. Anal. Appl. Pyrol.,68 69, 115 136(2003). 

Manila Copal. The Manilas are collected in Indonesia and the Philippines They are soluble in alcohols and ketones, and insoluble in hydrocarbons and esters. The resins soften between 81—90°C and have acid numbers of 110—141. Principal uses are in coatings and varnishes. 

Analytical pyrolysis has been proven a very useful tool in the identification of resins used for artistic objects [16,17], The pyrograms of Manila copal, colophony, Venice turpentine, elemi, shellac, dammar, sandarac, and mastic were obtained and used as fingerprints for these materials. Manila copal, colophony, and Venice turpentine were characterized by the presence of a degradation compound from abietic acid (as the source of these resins is from species of Coniferae), probably methyl-isopropylnaphthalene. Elemi has a characteristic peak for elemicine, shellac showed a series of fatty acids, dammar showed the presence of sesquiterpenes (see Section 6.3), sandarac was characterized by a phenolic compound, totarol, and mastic was also identified by specific sesquiterpenes [17]. 

A compn useful as a propellant Is derived from a mixture., with plasticized NC of dry potassium chlorate impregnated with Manila copal resin and of dry potassium chlorate/ charcoal impregnated With a gas oline-paraffin distillate. Burning rate of the grains obtained by extrusion or sheeting/cutting is controlled by the amount of chlorate-resin present Ref s.j. McClung, USP 2483589(1949) ... 

Isobutyl acetate [110-19-0] is a colorless, neutral liquid with a pleasant, fruity odor. It is miscible with organic solvents, but immiscible with water. Isobutyl acetate has a high solvency for cellulose nitrate, colophony, damar resin, ketone and ketone-formaldehyde resins, maleate resins, urea and melamine resins, and phenolic and alkyd resins. Polymers such as polystyrene, poly(vinyl ethers), poly(vinyl acetate), polyacrylates, chlorinated rubber and vinyl chloride copolymers, as well as fats, greases, and oils are readily dissolved. Postchlorinated poly(vinyl chloride) is less soluble. Polyisobutene, cellulose ethers, polymethacrylates, poly(vinyl butyrals), natural rubber, and manila copal are swollen. Shellac, cellulose acetate, cellulose acetobutyrate, poly(vinyl chloride), and poly(vinyl formal) are insoluble. 

Manila copals. See Copals, Manila Manila elemi copal. See Elemi gum Manila elemi oil. See Elemi oil Manila elemi resin. See Elemi gum Manila resin... 

Manila copal n. Natural resins, two types of which are used in varnish manufacture, in which they are described as hard and soft manilas. The hard type requires running... 

Melengket n. Native name for soft Manila copal obtained by tapping. 

Manila copal/East Indian copal/bendang/bindang/damar minjak/batjan/batu gum Agathis dammara/Araucariaceae) Manila-Kopal... 

Almaciga n Native Philippine name for manila copal. 

Manila Copal n Natural resins, two types of which are used in varnish manufacture, in which they are described as hard and soft manilas. The hard type requires running and is used to some extent in oil varnishes. The soft type is readily soluble in industrial alcohol and forms the basis of spirit paper and other air-drying varnishes the native name for the soft type, obtained by tapping, is Melengket. 

Manila Copal is exuded from Dammara orientalis (Indonesia, Philippines), while Kauri Copal derives from Agathis australis. They are soluble in alcohols and ketones. Copal softens at 90-115 °C and has an a.v. of 110-141. Uses are in paper coatings, finishes for various substrates, - adhesives and - inks. Dispersions in water, formed by salt formation, are used in floor - polishes. In 1974, 500 mt were produced. 

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