Perachem Ltd.

Yeadon, United Kingdom

Perachem Ltd.

Yeadon, United Kingdom

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Patent
PERACHEM Ltd | Date: 2015-07-16

Abstract The use of a water soluble ester of formula RCOXR as a hair conditioning agent, wherein R is an optionally _(N)substituted alkyl, alkenyl or aryl group including a hydrocarbyl chain of at least 5 carbon atoms, X is O or S and R includes a water solubilising group.


Patent
Perachem Ltd | Date: 2017-05-31

Abstract The use of a water soluble ester of formula RCOXR as a hair conditioning agent, wherein R is an optionally substituted alkyl, alkenyl or aryl group including a hydrocarbyl chain of at least 5 carbon atoms, X is O or S and R includes a water solubilising group.


Patent
Perachem Ltd | Date: 2013-03-22

A colouring composition comprising: (i) at least 0.0001 wt % of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups; (ii) at least 0.1 wt % urea; (iii) from 0.1 to 2.5 wt % of a thiol; (iv) less than 0.5 wt % ammonia; and (v) less than 0.5 wt % sulfite ions.


Patent
Perachem Ltd | Date: 2012-09-26

A method of removing colour from dyed hair, the method comprising applying to the hair a colour removal composition comprising a sulfur-containing nucleophile or a precursor thereof. The sulfur-containing nucleophile can be a salt of sulphoxylic acid, thiocyanate, thioglycolic acid, thiocarbamate, carbamoyl sulphinic acid and mixtures and/or salts thereof.


Patent
Perachem Ltd | Date: 2012-07-27

A method of removing colour from hair that has been oxidatively dyed, the method comprising the steps of: (a) contacting the hair with a composition comprising a sulfur-containing nucleophile or a precursor thereof; (b) contacting the hair with an acidic composition; and (c) contacting the hair with an oxidising composition; wherein there is no rinsing step between step (a) and step (b).


Patent
Perachem Ltd | Date: 2015-05-27

A method of treating a wool material, the method comprising the steps of:


Patent
Perachem Ltd | Date: 2012-09-26

A hair treatment method comprising the steps of:(a) optionally bleaching hair by applying a bleaching composition comprising from ammonium carbonate or a divalent metal cyanate and a source of hydrogen peroxide;(b) dyeing the hair by applying a colouring composition comprising a sulphur-containing nucleophile and a dye compound selected from a dye class other than the class of reactive dyes; and(d) removing colour from the hair by applying a colour removal composition comprising a sulfur-containing nucleophile or a precursor thereof.


Patent
Perachem Ltd | Date: 2013-10-09

A colouring composition comprising:(i) at least 0.0001 wt% of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups;(ii) at least 0.1 wt% urea;(iii) from 0.1 to 2.5 wt% of a thiol;(iv) less than 0.5 wt% ammonia; and(v) less than 0.5 wt% sulfite ions.


Patent
PERACHEM Ltd | Date: 2013-03-22

A method of treating a material, the method comprising the steps of: (i) contacting the material with a colouring composition comprising a dye compound; and (ii) contacting the material with a composition comprising a quaternary ammonium salt.


Patent
PERACHEM Ltd | Date: 2011-01-24

A depilatory composition comprising a source of cyanate ion, an organic acid or a salt thereof and a peroxide compound; and methods of removing hair from the skin using such compositions.

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