Chemico A - 40 are water - based dispersions of nano-sized Antimony Pentaoxide used with halogenated flame retardants to increase their efficiency when used in flame retardant treatments of materials such as textiles, nonwovens, adhesive latices, and coatings.

Neoprene - type of PVDC lattices often recommend avoiding the use of ammonia. A 15% solution of sodium hydroxide can be used or use Chemico A - 40 which is neutralized with sodium hydroxide.

Mr. B. K. Jain
Director - Technical
Tel. :- (0091) (11) 22167148, 22143971/81
Mobile :- 9810005428
E-mail : chemico@del2.vsnl.net.in

The total amount and ratio of flame retardants needed depend upon the severity of the test requirements and the material being treated. In most cases, optimum flame retardant performance in a halogen/antimony system is attained when the halogen and antimony are used at a 3 : 1 mole ratio. Exceptions are PVC and PVCD latices which contain high levels of chlorine, so we recommend the antimony pentaoxide be added to your formulation until the complete system passes the required flame test.

This simple FR application for the finishing of nonwoven polyester fiber padding for automotive interiors consists of a 'hard' PVC latex, Chemico A - 40, water and some ammonia solution : To 10 parts Chemico A-40, add 40 parts water with sufficient ammonia to bring the pH to 9, mix the water and the A-40, add 50 parts PVC latex. These ingredients are mixed, sprayed onto the nonwoven padding, and heat cured.

Chemico A - 50 are water - based dispersions of nano-sized Antimony Pentaoxide used with halogenated flame retardant to increase their efficiency when used in flame retardant treatments of materials such as textiles, non wovens, adhesive lattices, and coatings.

Chemico A-50 aqueous dispersions are supplied at approximately pH5 and, in nearly all applications, should have the pH adjusted before compounding with any latex. This adjustment assures full utilization of the colloidal particles without agglomeration or latex destabilization. Follow the latex manufactures recommendations for the optimum pH. Neutralize using ammonium hydroxide, which will volatilize during the drying and curing of latex film.
Chemico A-50 :
Dilute with water to 40% Sb₂O₅ or less, then neutralize with ammonia hydroxide.

Mr. B. K. Jain
Director - Technical
Tel. :- (0091) (11) 22167148, 22143971/81
Mobile :- 9810005428
E-mail : chemico@del2.vsnl.net.in

The total amount and ratio of flame retardants needed depend upon the severity of the test requirements and the material being treated. In most cases, optimum flame retardant performance in a halogen/antimony system is attained when the halogen and antimony are used at a 3 : 1 mole ratio. Exceptions are PVC and PVCD latices which contain high levels of chlorine, so we recommend the antimony pentaoxide be added to your formulation until the complete system passes the required flame test.

This simple FR application for the finishing of nonwoven polyester fiber padding for automotive interiors consists of a 'hard' PVC latex, Chemico A - 50, water and some ammonia solution : To 10 parts Chemico A-50, add 40 parts water with sufficient ammonia to bring the pH to 9, mix the water and the A-50, add 50 parts PVC latex. These ingredients are mixed, sprayed onto the nonwoven padding, and heat cured.