Use of DIPA-Esterquat Debonder For Tissue And Fluff Pulp Manufacturing
AssigneeEvonik Degussa GmbH
InventorsDeborah Lewis, Jörg Peggau, David Previs
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Abstract
The present invention relates to cellulose fiber materials containing 0.01 to 0.5% by weight of ammonia compound comprising oxyalkyl radicals consisting of at least 3 carbon atoms which are biodegradable at a degree of at least 60% according the OECD 301F method and a process for producing debonded cellulose fibers.
Claims20
A cellulose fiber material containing 0.01 to 0.5% by weight of ammonia compounds of formula (I)
- R12N+((A)aR2)2 B− formula (I)
- wherein
- R1 independently an alkyl group consisting of 1 to 6 carbon atoms;
- R2 independently an unsaturated or saturated acyl group;
- A independently an oxyalkyl radical consisting of at least 3 carbon atoms;
- a 1 to 3;
- where the radicals R2 consist of from 60% to 99% (w/w) of unsaturated acyl groups;
- B is an anion selected from the group consisting of chloride, acetate, methyl sulfate, and mixtures thereof;
- where the compounds of the formula (I) are biodegradable at a degree of at least 60% according the OECD 301F method.
A method of debonding cellulose fibers using ammonia compounds of the formula (I)
- R12N+((A)aR2)2 B− formula (I)
- wherein
- R1 independently an alkyl group consisting of 1 to 6 carbon atoms;
- R2 independently an unsaturated or saturated acyl group;
- A independently an oxyalkyl radical consisting of at least 3 carbon atoms;
- a 1 to 3;
- where the radicals R2 consist of 60% to 99% (w/w) of unsaturated acyl groups;
- B is an anion selected from the group consisting of chloride, acetate, methyl sulfate, and mixtures thereof;
- where the compounds of the formula (I) are biodegradable at a degree of at least 60% according the OECD 301F method.
A method of lubricating cellulose fibers using liquid ammonia compounds of the formula (I)
- R12N+((A)aR2)2 B− formula (I)
- wherein
- R1 independently an alkyl group consisting of 1 to 6 carbon atoms;
- R2 independently an unsaturated or saturated acyl group;
- A independently an oxyalkyl radical consisting of at least 3 carbon atoms;
- a 1 to 3;
- where the radicals R2 consist of 60% to 99% (w/w) of unsaturated acyl groups;
- B is an anion selected from the group consisting of chloride, acetate, methyl sulfate, and mixtures thereof;
- where the compounds of the formula (I) are biodegradable at a degree of at least 60% according the OECD 301F method.
A process for producing debonded cellulose fibers consisting of the steps
- (a) dissolving the ammonia compounds of the formula (I) in a solvent,
- R12N+((A)aR2)2 B− formula (I)
- wherein
- R1 independently an alkyl group consisting of 1 to 6 carbon atoms;
- R2 independently an unsaturated or saturated acyl group;
- A independently an oxyalkyl radical consisting of at least 3 carbon atoms;
- a 1 to 3;
- where the radicals R2 consist of 60% to 99% (w/w) of unsaturated acyl groups;
- B is an anion selected from the group consisting of chloride, acetate, methyl sulfate, and mixtures thereof;
- where the compounds of the formula (I) are biodegradable at a degree of at least 60% according the OECD 301F method
- (b) diluting the ammonia compounds of the formula (I) in water
- (c) adding the water solution (b) to cellulose fiber materials.
Dependencies are inferred from the claim text.