Reference

Dispersion of photoelastic constants in doped KDP crystals

Dispersion of photoelastic constants in doped KDP crystals.Some chemicals with cas registry numbers like 7778-77-0 and 7722-76-1 are also used. Ramanaiah, K. V.; Varma, K. B. R. (Dep. Phys., PSG Coll. Technol., Coimbatore 641 004, India). Bull. Mater. Sci., 5(2), 147-52 (English) 1983. CODEN: BUMSDW. ISSN: 0250-4707. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) The photoelastic behavior of KDP crystals with the additives borax, NiPO4, NH4H2PO4, Mn3(PO4)2, and NaH2PO4 was studied as a variable birefringent compensator. The dispersion of the stress birefringence with wavelength was studied for a single orientation. The photoelastic consts. of KDP decreased with the addn. of NiPO4, Mn3(PO4)2 and NaH2PO4 but increased with borax and NH4H2PO4. .

Adhesives for wood and its derivatives

Adhesives for wood and its derivatives. Jasinska, Halina; Starzynska, Krystyna; Odachowski, Ludwik; Czapkiewicz, Waldemar (Instytut Chemii Przemyslowej, Pol.). Pol. PL 117297 B1 30 Sep 1983, 2 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: C09J003-16. APPLICATION: PL 78-209830 25 Sep 1978.Several reagents with their cas registry numbers 7722-76-1 and 10192-30-0 are used here. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Section cross-reference(s): 43 Adhesives (55-80% solids, viscosity 1000-5000 Pa-s), contg. only 0.1-2% free HCHO and with short curing times but good pot life, contain as crosslinking catalysts monobasic or dibasic NH4 salts of acids with 2nd dissocn. const. 6.4 ′ 10-5 at 25°. Thus, urea-HCHO resin [9011-05-6] (viscosity 5000 Pa-s, 0.1% free HCHO, 80% solids) contg. 20 mL 2% aq. (NH4)H2PO4 was used for bonding fiberboards with bonding time 15 s at 180°. Viscosity after 8 h at 20° was 10,000 Pa-s. .