Leather Tanning Agents

The Quebracho Colorado extracts and its derivates are worldwide known since 1900’s as natural products that allow tanners to produce a wide variety of tanned leather with a natural feel and a beautiful look. Unitán, with its two factories ISO 9001-2000 certified, has the world’s bestselling vegetable extract product line. Our vegetable extracts are environmentally- friendly and give our customers the best choice for their leather production in a natural way.

Formulae

1 - Wet Brown – storage for 3 month

Pickled skin ph 3.6/3.8
Process for full thickness or split skin.

50% PICKLED BATH
 Ph: 3.8/4,0       °Be: 6/8
5 - 7%

UNIQUE  JR

 
1 - 2% Dispersing syntan  (Naftalensulphonic syntan)
0.3% FUNGUICIDE RUN 3hs.  THEN AUTOMATIC RUN (10´/Hs) OVER NIGHT TILL COMPLETE PENETRATION. –DRAIN-
30 % WATER 30°C  
2 - 3% PHENOLIC SYNTAN  
0.3% FUNGUICIDE RUN 2hs
0.5% FORMICA ACID RUN 30'
UNLOAD WITHOUT WASH – PILE REST OVER NIGHT – LIGHT SETTING OUT
PILE GRAIN TO GRAIN and COVER VERY GOOD UIT BLACK NYLON – REST IN FRESH PLACE.

2 - Sole Leather – Drum Tanning System

Full Crupon Size
Delimming And Pickled To Ph= 3,6 / 3,8.

PRETANNING PROCESS
4 RPM 50% PICKLED BATH  Ph: 3,8/4,0 cross section light green B.C.G °Be: 7
   

UNIQUE JR

 
    Dispersing syntan Naftalensulphonic)                         RUN 120'
      AUTOMATIC OVER NIGHT 5' / HR -
TANNING PROCESS
ADD 1.0% PHENOLIC SYNTAN RUN 30'
  15% SOLUBLE QUEBRACHO EXTRACT (1) RUN 120'
  30% WATER 25°C  
  15% SOLUBLE QUEBRACHO EXTRACT (1)  RUN 90´
  0.5% SULPHITED OIL RUN  30´
  15% SEMISOLUBLE QUEBRACHO EXTRACT (2)  
  1.0% PHENOLIC SYNTAN RUN 4 to 6 Hs – THEN AUTOMATIC 5´/Hs. OVER NIGHT TILL FULL PENETRATION
      AFTER OF 15/30 Hs Check final Temp. =38°C / 40° C
      FINAL °Be= 15 / 17 °Bé  (aprox)
  0.2% FORMICA ACID RUN 120' pH = 3,8/3,6
     

DRAIN

WASH 150% WATER 25°C RUN 5'
      DRAIN
PILE REST 24 / 48 Hrs - SAMMING – SABE (If it is necesary) –   % OVER SHAVED WEIGHT
SAMMING VERY GOOD IN MACHNIE
BLASHING AND FATLIQUOR PROCESS
16 / 18 RPM RUN 15' ONLY CRUPON SIZE (without water)
  0.3% - 0,8%

UNICLAR

RUN 30'
  1.0% MAGNESIUM SULPHATE

 
  1.0/2.0% GLUCOSE

 
  0.5% ACID NAPHTALENE SYNTAN

 
  2.0%

 UNIQUE  XE

 
 

1%

REPLACEMENT PHENOLIC RUN 90'
  1 - 3% SOLE LEATHER OIL

RUN 60'

  0,5% ACID PHENOLIC SYNTAN RUN 30'

UNLOAD / PILE REST / MECHANICAL OPERATION FOR SOLE LEATHER / HANG DRY

(1) = SOLUBLE QUEBRACHO EXTRACT: ATO / ATG / LIGHTAN / UNIQUE CHD .

(2) =SEMISOLUBLE QUEBRACHO EXTRACT: ATS / ATD / CHA .

3 - Vacceta Vegetal Tanning – Drum Tanning Process  (Double Crupon Y Head)

LIMMING and SPLIT SKIN aprox. 3,0 / 4,0 mm
DELIMMING and PICKLED to pH = 3,6 / 3,8 - % OVER LIMMING WEIGTH or PICKLED WEIGHT + 50%.

PRETANNING PROCESS
RPM 4 a 6

50%

PICKELD BATH  Ph: 3,8/4,0 – Light green with B.C.G.  °Be: 6
 

1,0/2,0%

Dispersing syntan  (Naftalenesulphonic) RUN 30´
 

4.0%

UNIQUE JR

RUN 120'  - Check penetration 30% aprox.
      AUTOMATIC OVER NIGHT 5' / HR -
TANNING PROCESS
  10% SOLUBLE QUEBRACHO EXTRACT (1)

RUN 60'

ADD

30%

WATER 25 °C

 

 

10.0%

SOLUBLE QUEBRACHO EXTRACT (1)

 RUN 90´

 

1.0%

SULPHITED OIL

RUN 30'

 

10.0%

SEMISOLUBLE QUEBRACHO EXTRACT (2)

RUN 4 a 6 Hs. AUTOMATIC OVER NIGHT (5´/Hs)  CHECK COMPLETE PENETRATION

ADD

100%

WATER 38°C

 

 

0.3%

FORMICA ACID

RUN 90' / pH = 3,8

 

 

 

 - DRAIN -

WASH

300%

WATER  25°C

 
 

0,5%

  UNICLAR

 RUN 10´  - DRAIN – UNLOAD -

PILE REST 24 / 48 Hrs – SAMMING - SHAVE - % OVER SABED WEIGHT.
BLASHING / RETANNING / FATLIQUORING
 

200%

WATER 35 °C

 

 

0.5%

UNICLAR

 RUN 20´ - Check cleaning of leather        - DRAIN -

WASH

200%

WATER 35 °C

RUN 10'

 

 

 

- DRAIN -

 

1,0%

DISPERSING SYNTAN

(NAFTALENE SULPHONIC)

 

4.0%

SOLUBLE QUEBRACHO EXTRACT (1)

 

 

3.0/4.0%

 MELAMINIC RESIN

RUN 40'

 

6 / 10%

VACCETA FATLIQUOR

 RUN 45´ - 60´

 

30%

 WATER 45°C

 RUN 5´

 

0,5%

FORMICA ACID

  RUN 30´  Ph: 3,6

 

 

 

- DRAIN -

WASH

300 %

 WATER  20°C

 

 

0,5%

 UNICLAR

  RUN 10´

UNLOAD / PILE REST /SETTING OUT / HANG DRY /ACONDITIONING.

(1) SOLUBLE QUEBRACHO EXTRACTS: ATO / ATG / LIGHTAN / UNIQUE CHD.
(2) SEMISOLUBLES QUEBRACHO EXTRACT: ATS / ATD / CHA.

4 - Metal Free Shoe Upper – Vegetal Tanning (Unique CHD / Unique VS)

SPLIT and PICKLED SKIN to 1,8 mm
% LIMMING WEIGHT or PICKLED + 50%

PRETANNING PROCESS
 

50.0%

 PICKLED BATH

 Ph: 3,8/4,0          °Be: 6

RPM 4 a 6

1.0% - 2.0%

DISPERSING SYNTAN

 RUN 30' / pH = 3,9

 

4,0 %

 UNIQUE  JR

 RUN 90´
 

10.0%

 UNIQUE  CHD

 RUN 60´

 

0,5%

 SULPHATED NEAT´S FOOT OIL

 RUN 20´

 

10.0%

 UNISYN CHD

 

 

0,1%

FUNGUICIDE

RUN 5 hs.  AFTER AUTOMATIC (5´/Hs.) OVER NIGHT TILL COMPLETE PENETRATION.

 

150.0%

WATER  35 °C

 RUN 10´

 

0.5%

FORMICA ACID

 RUN 30'

 

 

 

               - DRAIN -

 

200%

WATER  25 °C

 

 

0,5

 UNICLAR

RUN 10'

UNLOAD – PILE REST (24 Hs.) – SAMMING – SHAVE 1,4 mm.
RETANNING & FATLIQUOR - % OVER SHAVED WEIGHT
 

300%

 WATER 35°C

 
 

1,0%

 UNICLAR

RUN 30´
 

 

 

DRAIN – WASH –DRAIN

 

70%

 WATER 35°C

 
 

1%

 SODIUM FORMIATE

 

 

0,3%

 SODIUM BICARBONATE

Run 30' / pH =4,3/4,5

 

2,0%

 GLUTARALDEHIDE

RUN  60´

 

5,0%

 UNIQUE  CHD

 

 

X %

 DYESTUFF

 RUN  30´ 

 

10%

 UNIQUE  VS

 RUN  90´

ADD

100%

 WATER 55°C

 RUN 5´
 

2,0%

SULPHITED FISH OIL

 
 

1,5%

RAW NEAT´S FOOT OIL

 

 

3,0%

SULPHATED NEAT´S FOOT OIL

RUN 60'

 

0,7%

FORMICA ACID

RUN  30´  Ph: 3,6 – DRAIN -

WASH

300%

 WATER  35°C

 
 

0,5%

 UNICLAR 

 RUN  10´ - UNLOAD -

 PILE REST – SETTING OUT – VACUM 50°C/ 1´ - HANG DRY – ACONDITIONING

5 - Chrome Free Shoe Upper & Leather Goods Leather – Vegetal Tanning
(Unique  SC) 

SPLIT and PICKLED SKIN to pH = 3,6 / 3,8
% FROM PICKLED WEIGHT + 50%

Speed 4 RPM 

50%

PICKLED BATH

 Ph: 3,8/4,0                        °Be: 6/7 

 

3,0%

DISPERSING SYNTAN

 RUN 60´ 

 

12%

UNIQUE SC

 RUN 60'

 

1,0 %

 DISPERSING SYNTAN

 
 

1.0%

SULPHITED FISH OIL

 
 

0.1%

FUNGUICIDE

 RUN 20´
 

 12%

 UNIQUE SC

 RUN 4 Hs. – AUTOMATIC RUN (5´/Hs.) OVER NIGHT TILL COMPLETE PENETRATION. Ph:3,8

 

0,3%

FORMICA ACID

 RUN  20´
DRAIN
 

200%

WATER  30°C

RUN 5'

DRAIN
 

100%

WATER 30 C

 

 

1.5%

NEUTRALIZING SYNTAN

MUN 60' pH = 4,2 / 4,4  - DRAIN -

WASH – UNLOAD – PILE REST – SAMMING – SHAVE  (1,4/1,8 mm) - % OVER SABED WEIGHT.
12 RPM

200 %

WATER 35°C

 

 

1,0%

UNICLAR

 RUN  30´ - DRAIN – WASH - DRAIN
 

100%

 WATER 30°C

 
 

10%

UNIQUE SC

 RUN 60' – DRAIN -

 

100 %

WATER 30°C

 
 

1.0%

NEUTRALIZING SYNTAN

 
 

0.5%

SODIUM BICARBONATE

 RUN 60´ Ph: 5,0    - DRAIN -
 

50%

WATER  30°C

 
 

4,0%

DICIANDIAMIDE RESIN

 
 

1,5%

 DYESTUFF

RUN 40´

 

 6 – 10%

 FATLIQUORS
or
WATERPROOF FATLIQUOR

FROM PROCESS N°4

 RUN  60´
 

1,0%

FORMICA ACID

 RUN  30´   - DRAIN -

WASH

200%

 WATER  25°C

 
 

0,5%

 UNICLAR

 RUN  10´   - DRAIN -

 UNLOAD – PILE REST – SETTING OUT – VACCUM 50°C/1´ - HANG DRY - ACONDITIONING.

6 – METAL FREE SHOE UPPER & LEATHER GOODS with GOOD LIGHTFASTNESS (Unique TR)

FROM SPLIT and PICKLED SKIN.
% OVER PICKLED WEIGHT + 50%.

Run 4/6 rpm

50%

PICKLED BATH

 Ph: 3,8/4,0             °Be: 6

 

2.5%

GLUTARALDEHIDE

RUN 2 Hs.

 

0,3%

 SODIUM BICARBONATE

 
 

3%

DISPERSING SYNTAN

RUN 60' Ph: 4,3/4,5

 

13%

UNIQUE  TR

RUN  60´
 

1%

SOFT SYNTHETIC OIL

 

 

1%

DISPERSING SYNTAN

 

 

3%

PHENOLIC RESIN

 RUN  20´

 

13%

UNIQUE  TR

 RUN 4 Hs. AUTOMATIC OVER NIGHT (10´/Hr.). COMPLETE PENETRATION.

ADD

200%

WATER  40°C

RUN 5´
 

1%

FORMICA ACID

RUN 30' Ph: 3,6 – DRAIN -

WASH

200%

WASH 25°C

 
 

0,5%

UNICLAR

 RUN 10´ - UNLOAD -

PILE REST – SAMMING – SHAVE - % OVER SHAVED WEIGHT.
 

200%

WATER 30°C

 
 

1,5%

UNICLAR

RUN 30´ - DRAIN -

WASH

300%

WATER 25°C

RUN 10´ - DRAIN -
 

100%

WATER 25°C

 

 

1,0%

SODIUM BICARBONATE

 

 

2%

SODIUM ACETATE

RUN 60´ Ph: 4,6/4,8 – DRAIN -

 

100%

WATER 25°C

 

 

5%

UNIQUE TR

 
 

5%

PHENOLIC RESIN

 

 

4%

DICIANDIAMIDE RESIN

 RUN 45´

ADD

100%

WATER  45°C

 

 

4,0%

STYRENEMALEIC RESIN

 RUN  20´ 

 

5,0%

LANOLINE OIL

 
 

7,0%

PHOSPHORIC ESTER OIL

 
 

3,0%

SULPHATED NEAT´S FOOT OIL

 
 

2,0%

WITHE PIGMENT

RUN 60´ 

 

1.0%

FORMICA ACID

RUN  30´   Ph: 3,6 – DRAIN -

 

300%

WATER 25°C

 
 

0,5%

UNICLAR

RUN 10´   - DRAIN -

UNLOAD – PILE REST –SETTING OUT – VACCUM 50°C/1´ - HANG DRY - ACONDITIONING.

7 – WET-BLUE SHOE UPPER HEAVY VEGETAL RETANNING (Unique CHD/UniqueVS).  

 WET – BLUE SHAVED 1,4mm. %OVER SABED WEIGHT

 

200%

WATER  40°C

 

 

0,3%

 DEGREASING AGENT

 
 

2%

 UNICLAR

 

 

0,5%

SYNTHETIC OIL

 RUN 60´ - DRAIN -

WASH

300%

 WATER  35°C

 RUN  10´ - DRAIN -
 

80%

 WATER  30°C

 

 

2,0%

 SODIUM FORMIATE

 

 

2.0%

NEUTRALISING SYNTAN

 RUN  30´     Ph: 4,2/4,5
 

 2,0%

  PHENOLIC SYNTAN

 
 

4,0%

 UNIQUE   JR

 RUN  60´

 

 1,0%

 LECITINE OIL 

 RUN  20´

 

10%

 UNIQUE  CHD

 
 

2,0%

DYESTUFF

 RUN  40´ 

 

0,5%

 SULPHATED NEAT´S FOOT OIL

 RUN 20'

 

10%

 UNIQUE  VS

 RUN 60´

 

5,0%

 MELAMINIC RESIN

 RUN  30´

ADD

80%

 WATER  50°C

 RUN  5´
 

4,0%

 STYRENEMALEIC RESIN

 RUN 20´

 

2.0%

  SYNTHETIC SULPHITED OIL

 
 

4.0%

 LANOLINE OIL

 
 

3,0%

SULPHATED NEAT´S FOOT OIL

 

 

0.5%

 RAW NEAT´S FOOT OIL

RUN 45´

 

1,0%

ACIDO FORMICO

RODAR  30´  Ph: 3,6 – ESCURRIR -

WASH

 300%

 WATER  25°C 

 
 

 0,5%

 UNICLAR

 RUN 10´ - UNLOAD -

 PILE REST – SETTING OUT – VACCUM 50°C/1´ - HANG DRY – ACONDITIONING.

8 -  WET BLUE SHOE UPPER -  ´´TIMBERLAND´´ (Unique CHD/ Unique CHA)

WET-BLUE SHAVED 1,6/1,8 mm 
% OVER SHAVED WEIGHT

WASH

300%

WATER  40 °C

 

 

 0,5%

 UNICLAR 

 
 

0,2%

DEGRESING AGENT

 RUN 30´ - DRAIN -  

WASH

200%

 WATER 40 °C

 RUN  10´   - DRAIN -  

 

100%

WATER  30°C

 

 

1%

NAPHTALENE SULPHONIC RESIN

 
 

1%

NEUTRALISING SYNTAN

RUN 30' / pH = 4,3

 

 0,5%

SYNTHETIC SYNTAN 

 
 

0,3%

SODIUM BICARBONATE

RUN 90´ Ph: 4,5 – DRAIN- 

 

50%

WATER  25°C

 

 

4,0%

 UNIQUE  JR

RUN 30'

 

7,5%

UNIQUE CHD

 

 

4,0%

DICIANDIAMIDE RESIN

 
 

2,0%

DYESTUFF

 RUN 30´

 

7,5%

UNIQUE  CHA

RUN  60´   

 

 150%

 WATER 55°C 

 RUN  5´
 

0,8%

FORMICA ACID

RUN 30´ Ph: 3,8 – DRAIN -

WASH

 200%

WATER 45°C 

RUN 10´   - DRAIN -

 

100%

WATER  45°C

 

 

4% / 6%

SULPHATED NEAT´S FOOT OIL

 

 

4,0%

 SYNTHETIC SULPHITED OIL

 

 

1,0%

RAW NEAT´S FOOT OIL

 RUN  60´

 

0,8%

FORMICA ACID

RUN 30´ Ph: 3,6 – DRAIN -

WASH

300%

WATER 25°C

 
 

0,5%

UNICLAR

DRAIN 10´ - UNLOAD -

PILE REST – SETTING OUT – VACCUM 50°C/2´ - HANG DRY - ACONDITIONING.

9 – LEATHER BELT from WET-BLUE  (Unitan ATO/Unitan ATS ó ATD)

WET BLUE SHAVED  2,0 / 2,2 mm
% OVER SHAVED WEIGHT

 

200%

WATER 40 °C

 

 

3,0%

UNICLAR

RUN  2Hs. Ph: 2,0/2,5 – DRAIN -

WASH

 300%

 WATER 30 °C 

RUN 15´ - DRAIN -

 

50%

WATER 25°C

 
 

 2%-4%

NEUTRALISING SYNTAN 

 
 

2,O%

PHENOLIC SYNTAN

 RUN 30´  Ph: 3,8/4,0 

 

5%

UNIQUE JR

 RUNR  90´ (Check penetration 30%)

 

5,0%

UNITAN  ATO

 RUN  30´

 

8,0%

UNITAN ATO

 
12 RPM

7,0%

UNITAN ATS/ATD

 

 

1%-2%

DYESTUFF

 RUN  60´

 

3,0%

ESTYRENE MALEIC RESIN

 

 

3,0%

ACRYLIC RESIN

 

 

1%

SULPHATED NEAT´S FOOT OIL

RUN  30´

 

5,0%

UNITAN  ATO

 

 

10%

UNITAN  ATS / ATD

 RUN  2Hs. (Check full penetration) (It is better run automatic over night 10´/hs)

 Next day

 5,0%

MELAMINIC RESIN 

RUN 30´

ADD

100%

WASH  45°C

RUN  10´
 

0,6%

FORMICA ACID

RUN 10´  Ph: 3,6
 

2,0%

CHROME  33° (polvo)

 RUN 45          – DRAIN -
WASH

300%

WATER  45°C

 RUN  10´         - DRAIN -
 

100%

WATER  45°C

 
 

3,0%

SULPHATED NEAT´S FOOT OIL

 
 

1,0%

RAW NEAT´S FOOT OIL

 RUN 40´
 

0,7%

FORMICA ACID

RUN 20´  Ph: 3,6   -DRAIN -
WASH

300%

WATER 25°C

 
 

 0,5%

UNICLAR 

RUN  10´  - UNLOAD -

PILE REST – SETTING OUT – VACCUM 60°C/2.5´ - HANG DRY - ACONDITIONING. 

 

 

UNITAN SAICA / Paseo Colón 221 piso 10 / (C1063ACC) Buenos Aires ARGENTINA / Tel. fax: (5411) 4331 5548 / Contact: alm@unitan.net