Leather Chemicals

Typical analysis :

Chemical Type        : Complex aminoplast resin of medium polymeric size.

Concentration         : 94% (+ 2)

pH of 10% solution : 10.0 +  0.5

Solubility                : Readily soluble in water.

Appearance             : Pale brown free flowing powder.

Properties :

• Poptan RSI is a spray dried complex aminoplast resin of medium polymeric size recommended for tight and mellow leather. Due to its stable polymeric size, the leathers maintain its mellowness on aging and will not become firm or brittle. The resin is able to penetrate deeper, tans in depth, resulting in a richer and fuller leather.
• Poptan RSI has a selective filling action, mainly depositing in the loose structured parts of the leather. Due to its non-astringent nature, there will not be any drawn grain effects.
• Poptan RSI imparts good level dyeing properties, increases tensile strength of leather and gives plumpiness to the leather. The particular resinous nature of Poptan RSI gives a desirable buffing surface.

• After addition of Poptan RSI in subsequent operations, its advisable to adjust the pH to 3.0-3.5 for tighter leather and 3.5-4.0 for softer leathers, to avail the optimum efficiency of the product.

Adantages :

Ø  Improved fullness where it is required most.

Ø  Tight grain, increases tensile strength and plumpiness.

Ø  Gives desirable buffing surface.

Ø  A new approach to producing uniformly soft leather without additional fat liquoring.

Applications :

• For the mild, filling retannage of all types of chrome leather, where fullness and suppleness are desired, 2-5% is recommended.

·         For the production of Softy full grain, corrected grain upper leather and nubuck, 2-6% is recommended.

Popbate-ALKC is an enzymatic bating agent which works in alkaline range. Popbate-ALKC is a versatile bating agent based on proteolytic enzymes for all types of leather. This is an optimal blend of proteolytic enzymes from animal and microbial sources. The tailor-made formulation has also lipolytic side activities which help in removing the fatty tissues adhering to the skin and thus facilitating an optimum bating action.

Advantages:

Popbate-ALKC ensures efficient loosening of scud consisting of short hairs, grease, lime soaps, dark coloured pigments and traces of epidermis, resulting in a fine and silky grained leather.

Popbate-ALKC has proteolytic enzymes which ensure optimal removal of non-leather forming proteinaceous material like albumin, globulins and mucoids from the hides and skins.

Popbate-ALKC gives a more elastic grain without increasing the “loose grain“ tendency.

Popbate-ALKC slackens the hide structure gently without causing excessive decomposition of the flanks.

Popbate-ALKC Good scud loosening, smooth grains, even in strongly “fallen” pelts. For improved scud loosening special auxiliary agents may be additionally used.

Specifications:

Typical analysis :

Physical Aspect                     : Dark Brown hygroscopic powder dedusted.

Ionic Character                      : Anionic

PcP                                           : Free

Tannins %                               : Minimum 74.0

Moisture %                             : 4.5-6.5

pH (1 :10 solution)                : 4.5-5.0

Properties :

Popchestnut KPS Powder  is soluble in tap and hot water. It has the following characteristics for vegetable tannage :

·        Firmness and excellent fibre compactation.

·        Exceptional fixation power.

·        Uniform and efficient penetration.

·        Excellent weight yield.

·        More fullness.

·        Fine, tight and smooth leather grain.

Popchestnut KPS Powder  is also suitable for leather retannage that promotes the  following advantages :

·        Improved hydrophobic features.

·        Keep good printing and embossing effect.

·        Better buffing properties.

·        Excellent polish and burnish effect.

Popquebracho ATO Powder is a powder product obtained by chemically treating natural quebracho extract in order to achieve full cold water solubility and containing the largest tannin percentage among vegetable extracts. It is noraml spray-dried extract. It is excellent for drum tannage and also for the retannage of chrome leather.

Typical Analysis :

Physical Aspect : Light reddish brown hygroscopic powder. PCP : Free Tannins % : 70.0 ± 2.0 Non Tannins % : 20.0 Moisture : 8.0 maximum pH ( 1:10 soln.) : 4.0-4.5 Ash % : 6.8

Properties :

Popquebracho ATO Powder is fully soluble in cold water. It has the following characteristics for vegetable tannage :
High tannin content.
Quick penetration at natural pH. · Excellent tanning properties. Llniform quality.
Not dusty.
Non astringent. Good weight yield.
Full compatibility with vegetable tans and syntans.
It is particularly suitable for vegetable tanning of all kinds of leather, as well as for combined tanning and chrome Ieather retannage.
For retannage of chrome leather Popquebracho ATO Powder permits : · Better buffing properties.
Excellent polish effect.
Bellies and flanks fillings.
To keep embossing effect.

Popquebracho ATO Powder
Applications :

Popquebracho ATO Powder may be used alone or blended with ether vegetable extracts. The following use is recommended :
Based on limed weight :
25-30% of Popquebracho ATO Powder for vachetta tannage (veg. Leather).
40% of Popquebracho ATO Powder for soles tannage.
Based on shaved weight :
3-18% of Popquebracho ATO Powder for chrome leather retannage.

Recommendations :

During the leather production, there may be a risk of iron contamination. In order to prevent this, we suggest to use an iron sequestering agent such as Pop DS Powder ( 0.2% on the reference weight), which may be added together with the first additiowof tanning agents on the tanning or . retanning processes.
Powder extract dissolution should be performed by means of mechanical shaking. If done manually, it is advisable to work by dissolving the contents of each bag. The use of water at 35°C facilities dissolution and prevents lump formation.
Using small amounts of sodium metabisulfite and formic acid.iri tanning liquors and processes lightens the colour and improves the appearance of the end-products.

We offer a range of Pop Quebracho ATO, which is a popular leather chemical made from the combination of chestnut, vegetable extracts and has a very tannin content of 74 percent. Cost is a factor along with easy availability even in bulk attracts the clients for the range of leather chemicals offered by us.

vegetable extract, chestnut extract, tannin content 74%

GS Powder is a mixture of mimosa medium bleach extract and wattle extract which is suitable to any kind of vegetable leather. It is excellent for pit-drum or drum tannage and also for the retannage of chrome leather.

Physical aspect       : Light brown hygroscopic powder.

Ionic character        : Anionic

PCP                         : Free

Tannins %              : 70.0 + 2.0 (72.5 + 2.0 dry basis )

Moisture %              : 6.5 maximum

pH (1:10 soln.)        : 4.5-5.0

Properties :

·    GS Powder is soluble in tap and hot water. It has the following characteristics for vegetable tannage :

o   Efficient penetration.

o   Excellent yield.

o   Good fixation.

·    For retannage of chrome leather GS Powder permits :

o   Bellies and flanks fillings.

o   Better buffing properties.

o   To keep embossing effect.

o   Excellent polish effect.

Application :

GS Powder may be used alone or blended with other vegetable extracts. The following use is recommended :

·    Based on limed weight

o   25-30% of GS Powder for vachetta tannage ( veg leather )

o   40 - 45% of GS Powder for soles tannage.

·    Based on shaved weight

o   5-15% of GS Powder for chrome leather retannage.

Poptan PG 50

Chemical Nature            :  1,5-Pentanedial, Glutaraldehyde

Typical Analysis :

Colour                            :   Pale Yellow

Appearance                    :   Clear Liquid

pH (1:10 soln.)               :   3.5 – 4.0

Glutaraldehyde Content :   49 – 51%

Solubility                       :   Readily miscible with water

APPLICATIONS :

Poptan PG 50  possesses  a number of  important   properties as a tanning and

retanning material. It gives softer and fuller leathers. It has a wide range of applications in chrome, vegetable or combination tannages.

Poptan PG 50  improves the uptake of chrome, when used in rechroming system, giving a fuller, softer leather with a fine break. Recommended addition 1%-4% based on shaved weight.

Poptan PG 50  is highly recommended for the semi-chroming of E.I. & vegetable tanned leathers. By offering a retannage with Poptan PG 50 before chrome, it is possible to reduce the chrome offered and achieve an increase in the shrinkage temparature of the leather. This increase is considerably greater than the one obtained in a conventional semi-chroming process. The improvement in fullness and softness of the finished leather is an added advantage. Recommended addition 1%-5% based on crust weight.

Poptan PG 50  is also suitable for the tannage of pickled woolskins in combination with chrome, where it reduces the risk of chrome staining and gives white wool. It is recommended to give an addition of 3 gms.-4 gms. per litre of the float.

Poptan PG 50  when used as a neutralising agent for chrome leather, it fixes the chrome and virtually eliminates bleeding of chromium into the solution. Its use for this purpose can make a significant contribution to improving the quality of effluent where chrome is a problem. Recommended addition 1%-4% based on shaved weight.

Storage :

Presents no problem under normal storage conditions and has an indefinite shelf life.

We offers a variety of Pop Mimosa SS which is highly appreciated for its industrial application in leather industry. Our clients use this for producing high quality white leather with excellent fullness and tightness, coupled with smooth grain. We offer these at leading prices.

Pop mimosa SS

Pop mimosa SS is a soft mimosa single bleached extract of high quality indicated for tannage of hides and skins whenever a very light colour is required. In the tannage of soles and vachettas a very nice beige tone, often desired, is acheived.

Typical analysis :

Physical Aspect        :           Light beige hygroscopic powder, dedusted.

Ionic Character         :           Anionic

PCP                             :           Free

Tannins %                 :           75.0 + 1.0

Non-Tannins %        :           20%

Insolubles                  :           0.5%

Moisture %                :           4.0%

Mineral Ash              :           0.4%

Fe (Iron)                     :           0.00025 ppm

Cu (Copper)              :           Nil

pH (1:10 soln.)         :           4.0 – 4.5

Properties :

Pop mimosa SS is soluble in tap and hot water, with the following characteristics on vegetable tannage :

·        Fast and efficient penetration.

·        Excellent yield.

·        Very light colour leathers

·        Good fixation

·        Nice beige tone

For chrome leather tannage Pop mimosa SS permits :

·        Bellies and flanks fillings.

·        Better buffing properties.

·        Excellent polish effect.

Application :

Pop mimosa SS may be used alone or blended with other vegetable extracts. The following use is recommended : 

·        Based on shaved weight

q  5-15% for chrome leather tannage.

Poptan CSN

A light–fast chrome containing synthetic tannin with buffering and complex forming properties.

Poptan CSN  is a combination of basic chromium salts and a lightfast white tanning agent. The product can be  used as selftanning agent or as pretanning and retanning agent in vegetable and chrome tannage. It imparts to the leather a particularly soft handle and a tight grain.

Analytical data:

Chromium Oxide    : 12%

pH of 10% solution : 4.0

Appearance             : Pale green powder readily soluble in water.

PROPERTIES:

·         Poptan CSN  is primarily used for the production of leathers with mellowness and supple grain without altering the chrome leather character.

·         The use of Poptan CSN retains fineness and tightness of grain and prepares the leather for level dyeing.

·         It is preferable to use Poptan CSN in powder form, 4-8% Poptan CSN may be used depending on the type of leather.

·         Poptan CSN is recommended for neutralizing and retanning of chrome leathers. It also has complex forming and buffering properties.

APPLICATIONS:

·         For the tannage of low chrome wet blue to improve uptake, 1%-2% is recommended.

·         For the retannage of chromed stock, sides, skins or splits for clothing and gloving, 2%-6% is recommended.

·         When used as retanning agent for E.I. tanned goat skins, it imparts an extremely soft handle and fills up the leather without unduly loading the gain.

·         When used alone it yields white leathers of good fullness and highly resilient handle.

Popquebracho ATO powder

Quebracho powder is a powder product obtained by chemically treating natural quebracho extract in order to achieve full cold water solubility and containing the largest tannin percentage among vegetable extracts. It is normal spray-dried extract. It is excellent for drum tannage and also for the retannage of chrome leather.

Physical Aspect           : Light reddish brown hygroscopic powder.

PCP                           : Free

Tannins   %                : 72% +  1.0

Non Tannins  %          : 20.0%+ 2.0

Moisture                      : 8.0% maximum

pH  ( 1:10 soln.)           : 4.7-5.3

Ash  %             : 6.8%+0.5

Popquebracho  ATO  Powder  is fully soluble in cold water. It has the following characteristics for vegetable tannage :

·         High tannin content.

·         Quick penetration at natural pH.

·         Excellent tanning properties.

·         Uniform quality.

·         Not dusty.

·         Non – astringent.

·         Good weight yield.

·         Full compatibility with vegetable tans and syntans.

It is particularly suitable for vegetable tanning of all kinds of leather, as well as for combined tanning and chrome leather retannage.

For retannage of chrome leather Popquebracho  ATO Powder permits :

·         Better buffing properties.

·         Excellent polish effect.

·         Bellies and flanks fillings.

·         To keep embossing effect.

……..2….…

Applications :

Popquebracho  ATO  Powder  may be used alone or blended with other vegetable extracts. The following use is recommended :

Based on limed weight :

·         25-30% of Popquebracho  ATO Powder for vachetta tannage ( veg. Leather ).