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Copal |
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copal
a hard aromatic resin, yellow, orange, or red in colour, obtained from various tropical trees and used in making varnishes and lacquers copal [′kō·pəl] (materials) Hard, resinous substance exuded from certain trees in the East Indies, South America, and Africa and used in varnish and printing ink. copal Resin of natural origin used in varnishes to provide gloss and hardness. Copal a class of natural fossil resins composed primarily of resin acids. Copals are extremely hard, with a high melting point (up to 360°C and higher) and great chemical stability. Their density is 1.03–1.07 g/cm3. The color of copals ranges from colorless to brown. The names of copals are often derived from the places of extraction, for example, Zanzibar, Mozambique, Angola, Borneo, and Brazil copals. Copals are widely used in the manufacture of varnishes. With the appearance of synthetic resins, their importance has decreased. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Their ears, frightfully distended, held dangling to them disks of wood and plates of gum copal. As he wanted something that could be carried openly in the hand, I proposed to make use of an old one- gallon copal varnish can I happened to have by me. |
Copal |
COPA Copa Airlines Copa cabana COPAA COPABA Copac Copaca bana Copacabana Copacabana beach Copacabana Palace COPACC COPACE copacetic COPACHI Copachisa COPAD CoPADD COPAE COPAFS COPAH copaiba copaiba copaiba balsam copaiba balsam Copaiba Oil Copaiba Oil Copains du Bataillon de Joinville Copal Copal resincopal varnish COPALC copaline Copalis National Wildlife Refuge copalite Copalm COPAM COPAMEX Copan Copan Copan Copán Copán COPANIT COPANT COPAO COPAP CoPAPIA Copapod Copapod Copapod COPAR COPAR COPAR COPAR COPARC coparcenaries coparcenary coparcener | |||||||
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