| 单词 |
resinoid |
| 释义 |
resinoid, a. and n.|ˈrɛzɪnɔɪd|
[f. resin n. + -oid. Cf. F. résinoïde.]
A. adj. Resembling resin.
1830Lindley Nat. Syst. Bot. 232 A bitter resinoid matter, slightly soluble in water. 1894Westm. Gaz. 18 June 8/1 Cyona Tincture is an alcoholic extract which has been found to contain a resinoid substance.
B. n.
1. A resinous substance.
1880Libr. Univ. Knowl. VIII. 818 The resinoid extracted from it has the name of leptandrin. 1894Times 11 Aug. 11/2 The woody fibre disappears first, leaving a residue richer in resinoids.
2. A synthetic resin; spec. one that is thermosetting, or is not permanently soluble and fusible.
1925Baekeland & Bender in Industr. & Engin. Chem. Mar. 225 The resinous products..are..decidedly infusible. Furthermore, they are insoluble in ordinary solvents and are incomparably stonger and more resistant to chemical and physical agents than the natural resins or the artificial resins of the Novolak type; in order to differentiate them from all these, we feel warranted in designating them more accurately under the name of ‘phenol resinoids’. 1934[see resin n. 3]. 1935C. Ellis Chem. Synthetic Resins I. i. 14 The term ‘resin’ is restricted by some to thermoplastic resins, and the word ‘resinoid’ is used to designate the heat-hardening resins. 1936H. W. Rowell Technol. Plastics i. 12 Phenolic and other synthetic resinoids now have an increasing use in the varnish industry. 1949B. L. Davies Technol. Plastics xi. 188 The three stages in the polymerization [of phenol with formaldehyde] were first recognized by Baekeland,..all being called resinoids to distinguish them from the permanently soluble, permanently fusible, resins. 1959Times 18 Nov. 12/5 The diamonds produced in the laboratory consist, in effect, of abrasive grit suitable for use in resinoid-bonded grinding wheels. |
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