| 单词 | urea-formaldehyde |
| 释义 | > as lemmasurea-formaldehyde urea-formaldehyde n. used attributively and absol. to designate plastics, resins, etc., made by condensation of urea with formaldehyde. ΘΚΠ society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [adjective] > type of synthetic resin or plastic urea-formaldehyde1928 polyvinyl1933 1928 Brit. Patent 291,473 3/2 When using urea-formaldehyde resins, alkaline catalysts may be used to obtain the intermediate condensation product. 1933 Archit. Rev. 73 1 The synthetic plastics of which the two best known and most fully developed are the Phenol-formaldehyde and the Urea-formaldehyde types. 1976 Milton Keynes Express 9 July 14/4 The majority of houses have cavity walls and these can be insulated by filling the cavity with..a foaming resin called urea formaldehyde. 1984 Christian Sci. Monitor 2 Mar. 23/1 The safety of urea-formaldehyde insulation..has been a subject of debate for years. < as lemmas |
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