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Document DE000004117041A1 (Pages: 6)

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Bibliographic data Document DE000004117041A1 (Pages: 6)
INID	Criterion	Field	Contents
54	Title	TI	[DE] Verfahren zur Herstellung von Gegenst�nden aus Bleikristall mit verringerter Bleil�ssigkeit [EN] Coating lead crystal to reduce lead loss during corrosion - by sol-gel method involving hydrolysing and condensing cpds. of silicon, aluminium, titanium or zirconium
71/73	Applicant/owner	PA	Institut f�r Neue Materialien gemeinn�tzige GmbH, 66123 Saarbr�cken, DE
72	Inventor	IN	Mennig, Martin, Dr., 6607 Quierschied, DE ; Schmidt, Helmut, Prof. Dr., 6604 G�dingen, DE
22/96	Application date	AD	May 24, 1991
21	Application number	AN	4117041
	Country of application	AC	DE
	Publication date	PUB	Nov 26, 1992
33 31 32	Priority data	PRC PRN PRD
51	IPC main class	ICM	C03C 17/25
51	IPC secondary class	ICS
	IPC additional class	ICA	B65D 1/02 B65D 1/10 B65D 65/38
	IPC index class	ICI
	Cooperative patent classification	CPC	C03C 17/25 C03C 2217/212 C03C 2217/213 C03C 2217/214 C03C 2217/23 C03C 2217/92 C03C 2218/113
	MCD main class	MCM
	MCD secondary class	MCS	C03C 17/25 (2006.01)
	MCD additional class	MCA
57	Abstract	AB	[DE] Gegenst�nde aus Bleikristall, z. B. Karaffen und Gl�ser, mit verringerter Bleil�ssigkeit werden dadurch erhalten, da� man$A a) auf das Bleikristall eine Schutzschicht aus einer Zusammensetzung aufbringt, die nach dem Sol-Gel-Verfahren erhalten worden ist durch Hydrolyse und Kondensation von im Reaktionsmedium l�slichen Verbindungen mindestens eines Elementes aus der Gruppe Si, Al, Ti und Zr, gegebenenfalls in Kombination mit im Reaktionsmedium l�slichen Verbindungen mindestens eines Elementes aus der Gruppe der Alkalimetalle, Erdalkalimetalle und Bor, in einem L�sungsmittel, gegebenenfalls in Gegenwart eines Kondensationskatalysators, und$A b) die Schutzschicht w�rmebehandelt. [EN] Lead crystal objects, are provided with a protective coating by the sol-gel method in which compounds of at least one element from Si, Al, Ti and Zr opt. in combination with a cpd. of at least one element from alkali metals, earth alkali metals and boron, which are all soluble in the reaction medium are hydrolysed and condensed in the presence of a condensation catalyst to produce a protective coating on the glass object. The coated object is then heat treated. USE/ADVANTAGE - Coating lead crystal carafes and glasses. The coating reduces the amount of lead escaping from the glass especially during corrosion with fluids.
56	Cited documents identified in the search	CT
56	Cited documents indicated by the applicant	CT
56	Cited non-patent literature identified in the search	CTNP
56	Cited non-patent literature indicated by the applicant	CTNP
	Citing documents		DE000004129409A1 DE000004226517A1 DE000004226517C3 DE000019501092A1 DE000019708162A1 DE102007010995A1 DE102009058650A1 DE102021106783A1 EP000000727396A3 FR000002730726A1 US000005683812A US000009040154B2 WO002011072838A1
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	Search file IPC	ICP	B05D 7/26 O C03C 17/25 SG