Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Patent
1995-12-29
1998-01-06
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From ketone or ketene reactant
128230, 128271, 128503, 128 63, 128515, 128521, 524142, 524592, 524593, 524599, C08G 218, C08G 602
Patent
active
057055998
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to graft polymers of ketone-aldehyde condensation products and co-condensation products and/or the monovalent or polyvalent metal compounds thereof, the preparation thereof and the use thereof.
Ketone-aldehyde condensation and co-condensation products have long been known. Thus, readily water-soluble condensation products of cycloalkanones and formaldehyde, with the use of sodium sulphite as a substance introducing acid groups, are described in, for example, German Auslegeschrift 23 41 923. However, a serious disadvantage of these condensation products is their low thermal stability, with the result that their range of uses is greatly limited.
Good thermal stability is a property of the acid group--containing condensation products of aldehydes and ketones according to German Offenlegungsschrfit 31 44 673 and co-condensation products according to German Offenlegungsschrift 33 15 152 and the metal compounds of these (co-)condensation products according to German Offenlegungsschrift 34 29 068. Although these products can be used as thickeners, retention agents, surfactants, dispersants or liquefying agents for aqueous systems, the relevant product properties are not optimum in some fields of use.
It was therefore the object of the present invention to modify the ketone-aldehyde condensation, and co-condensation products and the metal compounds thereof, respectively, in such a way that the technical application properties of the. corresponding derivatives are further improved.
THE INVENTION
This object was achieved, according to the invention, by this provision of graft polymers of ketone-aldehyde condensation and co-condensation products, respectively, and/or the monovalent or polyvalent metal compounds thereof, which are characterized in that the condensation product consists araliphatic, cyclic or aromatic hydrocarbon radicals with at least one nonaromatic radical, hydrogen or an aliphatic, araliphatic, aromatic or heterocyclic radical and sulphoxy, sulphoalkylamine or sulphoalkyloxy groups, monomers have been grafted.
It has in fact surprisingly been found that the properties can be influenced in a specific manner by grafting the relevant unsaturated monomers onto the (co-)condensation products and the metal compounds thereof, respectively.
The parent structures of the graft polymers according to the invention consist of ketone-aldehyde condensation and co-condensation products, respectively, and/or the monovalent or polyvalent metal compounds thereof, as described, for example, in German Offenlegungsschrift 31 44 673, German Offenlegungsschrift 33 15 152 or German Offenlegungsschrift 34 29 068. The ketones used here are symmetrical or asymmetrical compounds containing aliphatic, araliphatic, cyclic or aromatic hydrocarbon radicals with at least one nonaromatic radical, the total number of carbon atoms and hetero atoms in the ketones preferably being 3 to 12. Suitable aliphatic radicals are straight-chain or branched, unsaturated and, preferably, saturated alkyl radicals, such as, for example, methyl, ethyl, propyl, isobutyl, etc. Araliphatic radicals are, for example, benzyl or phenethyl, and aromatic radicals are, for example, .alpha.- or .beta.-naphthyl and preferably phenyl.
The ketones can also have one or more substituents, such as, for example, amino, hydroxyl, alkoxy, acetyl or alkoxycarbonyl groups. Examples of ketones containing saturated aliphatic radicals are acetone, methyl ethyl ketone and methyl isobutyl ketone, examples of ketones containing substituted aliphatic radicals are methoxyacetone, diacetone alcohol and ethyl acetoacetate, examples of ketones containing unsaturated. aliphatic radicals are methyl vinyl ketone, mesityl oxide and phorone, an example of a ketone containing araliphatic radicals is benzylacetone, examples of ketones containing cyclic radicals are cyclohexanone and cyclopentanone, and examples of ketones containing aromatic radicals are acetophenone and 4-methoxyacetophenone.
Suitable aldehydes of the formula
REFERENCES:
patent: 4666979 (1987-05-01), Plank et al.
Felixberger Josef
Plank Johann
SKW Trostberg Aktiengesellschaft
Truong Duc
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