Examples of 'hydroxyalkyl groups' in a sentence
Meaning of "hydroxyalkyl groups"
hydroxyalkyl groups - organic chemical groups containing both hydroxyl (-OH) and alkyl (-CnH2n+1) functional groups
How to use "hydroxyalkyl groups" in a sentence
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hydroxyalkyl groups
Examples of lower hydroxyalkyl groups are hydroxymethyl or hydroxyethyl.
Hydroxyalkyl starch comprising two or more different hydroxyalkyl groups is also conceivable.
Preferred hydroxyalkyl groups are hydroxymethyl and hydroxyethyl.
Hydroxyalkyl starch comprising two or more different hydroxyalkyl groups are also possible.
Examples of lower hydroxyalkyl groups are cyanomethyl or cyanoethyl.
The colour care agents are amines substituted with, for example, hydroxyalkyl groups.
The hydroxyl or hydroxyalkyl groups may be esterified or etherified.
Reacting the carboxyl groups of the polyether by means of a ring-opening reaction produces hydroxyalkyl groups.
Preferred hydroxyalkyl groups comprise a lower alkyl group.
Preferred substituents include saturated and straight chain alkyl groups, hydroxyalkyl groups and mixtures thereof.
Among the preferred lower hydroxyalkyl groups are hydroxymethyl or hydroxyethyl.
In a yet further aspect, L can be substituted by hydroxy groups or hydroxyalkyl groups.
Optionally present hydroxyl or hydroxyalkyl groups may be esterified or etherified.
Two hydroxyalkyl groups in the di ( hydroxyalkyl ) amino may be the same or different.
Among the particular interesting lower hydroxyalkyl groups are hydroxymethyl or hydroxyethyl.
See also
Namely, hydroxyalkyl groups consist of hydroxymethyl groups and hydroxyethyl groups.
It is also intended to include those hydroxyalkyl groups containing an ether oxygen.
Preferred hydroxyalkyl groups include, but are not limited to, hydroxyethyl and hydroxypropyl.
A preferable hydroxyalkyl group includes hydroxyalkyl groups each having about 2 to 4 carbon atoms.
The hydroxyalkyl groups are preferably 1-hydroxyalkyl and are most preferably hydroxymethyl groups.
Preferably, they contain substantially no hydroxyalkyl groups having three or more carbon atoms.
Such hydroxyalkyl groups are preferably of formula ROH, where R is as defined above.
The alkoxy, acylamino, alkylamino and hydroxyalkyl groups preferably contain from 1 to 4 carbon atoms.
The hydroxyalkyl groups include a hydroxymethyl group, hydroxyethyl group, etc.
The modified nonionic guars are especially modified with C1-C6 hydroxyalkyl groups.
The alkyl groups or hydroxyalkyl groups according to the invention may be straight or branched.
The modified nonionic guar gums may be modified with C1-C6 hydroxyalkyl groups.
Particularly preferred hydroxyalkyl groups are ß-hydroxyalkyl groups.
The hydroxyalkyl groups include, for example, hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.
Particularly preferred hydroxyalkyl groups are B-hydroxyalkyl groups.
The modified non-ionic guar gums are in particular modified with C1-C6 hydroxyalkyl groups.
Examples of suitable hydroxyalkyl groups include hydroxymethyl and 2-hydroxyethyl.
Preferred hydroxyalkyls comprise a lower alkyl ; Non-limiting examples of suitable hydroxyalkyl groups include hydroxymethyl and 2-hydroxyethyl.
Representative hydroxyalkyl groups include hydroxymethyl, hydroxyethyl and hydroxypropyl groups.
Compound ( A ) is a phosphine-oxide containing at least two hydroxyalkyl groups.
That is, preferable hydroxyalkyl groups include a hydroxymethyl group and a hydroxyethyl group.
In addition to the anionic groups, the guar gums may possess C 1 - C 6 hydroxyalkyl groups.
Thus, arylalkyl and hydroxyalkyl groups are also suitable for use in the invention.
In addition to the cationic groups, the cationic guar gums may preferably comprise C 1 - C 6 hydroxyalkyl groups.
Preferred are hydroxyalkyl groups having one to twenty, more preferably one to ten, hydroxyls.
The guar gums are more particularly modified with C 1 - C 6 hydroxyalkyl groups.
Preferred hydroxyalkyl groups are ( monohydroxy ) ethyl groups.
Examples include hydroxymethyl, 1-hydroxyethyl, 1-hydroxypropyl and other hydroxyalkyl groups.
Hydrogen and hydroxyalkyl groups having of from 2 to 10 are preferred.
Nonionic guar gums comprising C1-C6 hydroxyalkyl groups.
Exemplary hydroxyalkyl groups include hydroxymethyl and 2-hydroxyethyl.
The above-mentioned alkyl groups and hydroxyalkyl groups comprise 1-5 carbon atoms.
Among them, hydroxyalkyl groups each having 2 or 3 carbon atoms are advantageously used.
Among them, linear or branched C1-4 hydroxyalkyl groups are particularly preferred.
Preferred hydroxyalkyl groups include, but are not limited to, hydroxyethyl, hydroxypropyl, phenylhydroxyalkyl.
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