TENSYN – R7

NATURE

TENSYN – R7 is a anionic powdered amino resin tanning agent, for the tanning of chrome leathers and for vegetable tannage.

Appearance : Light coloured fine powder powder
Concentration : 94 -98 %
pH of 1:6 : 9.0 – 9.5

TENSYN R7 is a powder with fine particle size when diluted in water has a pH of approximately 9.5. TENSYN R7 has a selective filling, being chiefly deposited in the less closely structured parts of the hide. TENSYN R7 improves fullness, particularly in the loosely structure parts of the hide. Tightenning of the grain and improvedfeel of the leather.

Far-reaching retention of chrome leather characteristics.
No drawn grain due to lack of astringency, Good level dyeing, No difficulties in paste drying
A Good surface for buffing and embossing, Favourable response to finishing.
No detrimental effect on the characteristics and physical propertiesof leather during storage particularly tensile strength.

Application:
TENSYN R7 is suitable for retanning of all types chrome leather, vegetable tannage e.g. for sides, box calf % glacekid. It can be used on its own or in combination with synthetic, vegetable and chrome tanning materials and is best used in undissolved form in a short float.

1.Retanning of full grain or corrected grain side leathers.
Single procedure paste or vaccum drying
Material : Full chrome tanned, shaved sides
Rinse : 10minutes to 50*C (120*F)
Neutralisation & retannage
(percentages on the shaved weight)
100 – 150 % water of 50*C (120*F)
2.0 – 3.0 % TENSYN N
o.5 – 1.0 % sodium formate
0.2 – 0.8 % sodium bicarbonate
Run for 20 – 30 minutes
Add 0.3 – 5.0 % TENSYN R7
Run for 30 -40 minutes
PH of the float 4.2 – 4.8
Cross section tested with BCG. Inner zone bluish green to BCG
Rinse:10minutes , raising to 60*C (140*F)
Dyeing and fatliquoring as usual.