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BLEACHING, e.g. OPTICAL BLEACHING, DRY-CLEANING, OR WASHING FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS (treatmentof fibres of filaments of glass, mineral wool, or slag wool C03; chemical treatment of fibrous material to obtain fibres for spinning D01; for mechanical matters D06C, D06F; bleaching paper pulp or cotton linters D21; {softening compositions for textiles, cleaning compositions for carpets, upholstery, fur or leather C11D})
Definition statement
This subclass covers:

The bleaching with bleaching agents or brighteners as well as the dry cleaning or industrial washing of textile materials to remove impurities.

The chemical preparation of textile materials for subsequent chemical treatments like dyeing or the application of finishing agents.

Relationship between large subject matter areas

The chemical finishing of textile materials D06M.

References relevant to classification in this subclass
This subclass does not cover:

Domestic laundering, compositions therefor

The scouring of natural raw fibres for the removing of natural impurities, like straw for wool, natural waxes for cotton. The degumming of silk

Mechanical aspects of the treatment of textiles and apparatuses used thereof

Dry-cleaning or washing fibres, threads, yarns, fabrics, feathers or made-up fibrous goods
Definition statement
This group covers:

The dry cleaning or the industrial washing like desizing of textile materials as with organic or inorganic solvents, aqueous baths and compositions therefor.

They are thus prepared for subsequent treatment.

Domestic dry cleaning processes and compositions.

The regeneration of used chemical baths.

Relationship between large subject matter areas

Home laundering compositions are classified in C11D.

References relevant to classification in this group
This group does not cover:

Washing machines

Dry cleaning apparatuses

Domestic spin dryers

Special rules of classification within this group

When the solvent is liquid C02 or in the supercritical state then it is recommended to classify in D06L 1/00.

When enzymes compositions are used for the washing of textile materials, it is recommended to classify in D06L 1/00.

Aqueous emulsions (mixture water / solvent) for washing are classified in D06L 1/12 and its subgroups.

Bleaching fibres, threads, yarns, fabrics, feathers, or made-up fibrous goods, leather, or furs {(dyeing and bleaching D06P 1/0024)}
Definition statement
This group covers:

All chemical bleaching processes and compositions using oxidizing, reducing or optical bleaching agents as well as enzymatic compositions; processes which are providing whiter textile materials than non treated textile materials.

In the present case, bleaching means fading of natural colour and not removal of dyes.

Relationship between large subject matter areas

An overlapping might occur with D06P 1/0024 which is covering the dyeing and bleaching in one combined process.

References relevant to classification in this group
This group does not cover:

Bleaching of hair

Removal of impurities from raw natural fibres, scouring or degumming

The decolouration of dyed textile materials, fugitive dyeing or stripping dyes

Locally discharging the dyes, discharge printing

Stone washing

Special rules of classification within this group

In case of overlapping with D06P 1/0024, it is recommended to both classify in D06L 3/00 or its subgroups as well as in D06P 1/0024. It is also recommended to allocate other relevant D06P groups which are covering the dyeing aspects.

using enzymes
Definition statement
This subgroup covers:

The bleaching of textile materials, leather or furs with compositions containing enzymes.

Relationship between large subject matter areas

In this group, an overlapping might occur with enzymatic compositions C12N.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Detergent compositions containing enzymes

Enzymes, enzymes compositions

Immobilized enzymes

Chemical treatment of textile materials with enzymes

Optical bleaching {brightening}
Definition statement
This subgroup covers:

The optical bleaching or brightening of textile materials, i.e. the treatment of textile materials with compounds providing the effect of great whiteness, generally fluorescent colourless dyes which are reflecting more blue light.

Relationship between large subject matter areas

An overlapping might occur with D06P 1/0012 which is covering the dyeing of textile materials with compounds to obtain luminescent or phosphorescent effects.

An overlapping might also occur with D06P 1/0024.

References relevant to classification in this group
This subgroup does not cover:

The dyeing of textile materials

Special rules of classification within this group

When the composition comprises a mixture of optical brighteners, it is recommended to allocate D06L 3/125 but in case the composition comprises a mixture of optical brightener and dye, then D06L 3/1257 or D06L 3/1292 should be allocated.

Synonyms and Keywords

In patent documents the following expressions/words "optical bleaching agents", "optical bleaching compounds" and "brightening agents" or "brighteners" are often used as synonyms.

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Last Modified: 10/11/2013