Compositions: coating or plastic – Coating or plastic compositions – Silicon containing other than solely as silicon dioxide or...
Patent
1997-05-07
2000-02-29
Shaver, Paul F.
Compositions: coating or plastic
Coating or plastic compositions
Silicon containing other than solely as silicon dioxide or...
10628714, 10628715, C07G 160, C08H 100, C09K 100
Patent
active
060304448
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to a mixture for treating substrates containing silicon compounds, in particular glass or ceramic material.
It is known that the surface of substrates containing silicon compounds, preferably silica or silicates, is treated with mixtures which in turn have organosilicon compounds as main constituent. The purpose of these known methods of treatment is, for instance, to reduce the corrosion caused by alkaline detergents or by the atmosphere on articles made of glass, to reduce the abrasion of labels adhered onto glass bottles, or to restrict the soiling of glass and ceramic surfaces.
From the EP-PS 0 395 077 there is known a means for the treatment of glass containers, which consists of 100 parts by weight of an organopolysiloxane and of 100 to 1000 parts by weight of a volatile polydimethyl siloxane. In addition to methyl groups, the organopolysiloxane contains substituted or unsubstituted monovalent hydrocarbon groups or a hydrogen atom as well as a hydroxyl group or a hydrolyzable group. The polydimethyl siloxane has a chain-like or ring-shaped structure. The known means may in addition comprise a curing catalyst. As curing catalyst there are used amines, metal salts of carboxylic acids, organotin compounds, titanic acid esters and quaternary ammonium salts. The organopolysiloxanes are obtained through partial hydrolysis and condensation of alkoxy silanes, where hydrolysis and condensation take place in the presence of water and acids. With the known means, glass containers and the labels provided on the glass containers should be protected against the corrosive attack of detergents.
From the GB-A 1,344,661 there is known a mixture for the treatment of glass and ceramic surfaces, which consists of an alkyl polysiloxane, an acid and ethanol or isopropyl alcohol. Upon application of the mixture and evaporation of the solvent, a liquid, oily residue remains on the glass and ceramic surface, which is, however, only short-lived. This oily residue should protect the glass and ceramic surface against corrosion and soiling.
It is the object underlying the invention to create a mixture for permanently protecting substrates containing silicon compounds, in particular glass or ceramic material, against soiling and corrosion. The mixture should thus form a thin and dense layer on the substrates, which layer has a good adhesion on the substrates and in addition has a good mechanical abrasion resistance. Moreover, the layer formed from the mixture should provide the glass and ceramic surface with hydrophobic properties.
The object underlying the invention is solved by creating a mixture which consists of the following components: contains Si--H-bonds and has the general formula: ##STR1## where R is an alkyl residue with 1 to 12 carbon atoms and/or a non-substituted or substituted phenyl residue, where the residues R have in part been replaced by hydrogen, and where n in formula F I is a number from 2 to 50 and in formula F II a number from 4 to 50, tetra-functional silane, which has the general formula carbon atoms, a cycloalkyl residue with 5 to 6 carbon atoms, a non-substituted or substituted phenyl residue and/or a vinyl residue, where R" is an alkoxy residue or a CH.sub.3 COO-residue and acts as functional residue, where the alkyl moiety of the alkoxy residue has 1 to 12 carbon atoms, and z is a number from 0 to 2, and organic or inorganic acid.
The mixture is preferably made of the liquid components A, B and C at temperatures up to 80.degree. C. by stirring. The mixture should preferably be stored at low temperatures, as this will increase its long-term stability. The mixture can be applied to the substrate to particular advantage after being diluted with a solvent; it can, however, also be applied solventfree, e.g. by spraying/injecting it under pressure onto the substrate.
In accordance with a further aspect of the invention the mixture contains as bifunctional silane a dialkyl dialkoxysilane, a dicycloalkyl dialkoxysilane, a diphenyl dialkoxysilane, a dialkyl diacetoxysilane,
REFERENCES:
patent: 5595675 (1997-01-01), Aso et al.
patent: 5624481 (1997-04-01), Gerhardinger et al.
patent: 5728203 (1998-03-01), Vorse et al.
patent: 5807430 (1998-09-01), Zheng et al.
patent: 5866352 (1999-02-01), Jackson et al.
"Chemical Abstracts", vol. 115, No. 10, #97863n, Sep. 9, 1991.
"Chemical Abstracts", vol. 107, No. 2, #11806w, Jul. 13, 1987.
Dubno Hebert
Metallgesellschaft Aktiengesellschaft
Shaver Paul F.
LandOfFree
Mixture for treating silicon-containing substrates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mixture for treating silicon-containing substrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixture for treating silicon-containing substrates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-679014