| EPNP | 1,2-epoxy-3(p-nitrophe-noxy)propane |
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| EB | 1,2-epoxy-3-butene |
| EB | 3,4-Epoxy-1-butene |
| epoxy resins | Thermosetting resins based on the reactivity of the epoxide group, which is characterised by toughness, adhesibility, chemical resistance, dielectric properties, and dimensional stability. Several modified types are used as denture base material. (12 Dec 1998) |
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| epoxy | Chemical term describing an oxygen atom bound to two linked carbon atoms Generally, any cyclic ether, but commonly applied to a 3-membered ring; specifically, a three-membered ring is an oxirane, a four-membered ring is an oxetane, a five-membered ring is an oxolane, and a six membered ring is an oxane; oxiranes are commonly produced from peracids acting on alkenes. Epoxys are important chemical intermediates, and the basis of epoxy resins (polymers) formed from epoxy monomers. (05 Mar 2000) |
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| epoxy resin | Any thermosetting resin based on the reactivity of epoxy; used as adhesives, protective coatings, and embedding media for electron microscopy. (05 Mar 2000) |
| carbacrylamine resins | A mixture of the cation-exchange resin's, carbacrylic resin and potassium carbacrylic resin (87.5%) and of the anion-exchange resin, polyamine-methylene resin (12.5%), used to increase the faecal excretion of sodium in oedema associated with excessive sodium retention by the kidneys, e.g., in congestive heart failure, cirrhosis of the liver, and nephrosis. (05 Mar 2000) |
| cation exchange resins | High molecular weight insoluble polymers which contain functional cationic groups that are capable of undergoing exchange reactions; used in various types of chromatography; also to treat hyperkalaemia. (12 Dec 1998) |
| resins | Flammable, amorphous, vegetable products of secretion or disintegration, usually formed in special cavities of plants. They are generally insoluble in water and soluble in alcohol, carbon tetrachloride, ether, or volatile oils. They are fusible and have a conchoidal fracture. They are the oxidation or polymerization products of the terpenes, and are mixtures of aromatic acids and esters. most are soft and sticky, but harden after exposure to cold. (12 Dec 1998) |
| resins, synthetic | Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components. (12 Dec 1998) |
| composite resins | Synthetic resins, usually acrylic based, to which a high percentage (usually about 75% to 80%) of an inert filler has been added. Glass beads or rods, borosilicate glass powder, and natural silica are the most commonly used fillers. Filler particles are coated with a coupling agent that binds the particles to the resin matrix. They are used chiefly in dental restorative procedures. (12 Dec 1998) |
| ion exchange resins | <chemistry> High molecular weight, insoluble polymers which contain functional groups that are capable of undergoing exchange reactions (ion exchange) with either cations or anions. See: ion exchange, ion exchanger. (12 Dec 1998) |
Synonyms : Resins, Epoxy
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