Comparison of the quality of China dissolved

Polystyrene-Butadiene Rubber(SSBR FOOD CH) and

imported

Emulsion polystyrene-butadiene rubber( ESBR FOOD)

Comparison of the quality of domestic dissolved polystyrene-butadiene rubber(SSBR FOOD CH)

and imported emulsion polystyrene-butadiene rubber( ESBR FOOD)

1

The United States, Mexico imported emulsion polystyrene-butadiene rubber English name

ESBR, ESBR is representative of the use of rosin saponification liquid for polymerization

reaction production of styrene-butadiene rubber products, and monomer in the reaction

process (butadiene, styrene) polymerization reaction rate is only about 60%-70%, after

the end of the reaction and then through the recovery device, the remaining 35% of the

styrene monomer that has not been completely reacted is recovered, and the polymerized

glue is separated from the emulsion polystyrene-butadiene rubber product after steam

agglomeration. Part of the rosin acid is converted into organic acids and saponifieds,

so the finished emulsion polystyrene-butadiene rubber contains 5%-6% organic acids

and a small amount of saponification and other residues, so the purity of emulsion

polystyrene-butadiene rubber is only about 95%, while Mexico's emulsion

polystyrene-butadiene rubber purity is only about 92%.

2

There are a number of enterprises specializing in the production of emulsion polystyrene-

butadiene rubber, the production of styrene-butadiene rubber products and imported

food-grade emulsion polystyrene-butadiene rubber products performance is basically

the same, the domestic factory production of emulsion polystyrene-butadiene rubber

name specification model ESBR a 1502 type,

But is no enterprise to consider the use as a food additive, even if you want to use it in the food

additive industry, the national regulatory authorities clearly stated that according to the national

standard inspection of food-grade styrene-butadiene rubber, it is impossible to pass the audit,

Therefore, although the indicators of domestic production of dairy polystyrene-butadiene rubber

are exactly the same as imported dairy polystyrene-butadiene rubber, but that is, domestic dairy

polystyrene-butadiene rubber can not be used as a food additive product, domestic production

enterprises are clear, dairy polystyrene-butadiene rubber process production products can not

meet the food additive styrene-butadiene rubber national standard indicators!

3

Now the domestic Ningbo Bowhong high-tech enterprises introduced advanced dissolved

polystyrene-butadiene rubber projects, after process adjustment, successfully produced

food-grade dissolved styrene-butadiene rubber products SSBR, tested by national authorities

according to international and domestic food-grade styrene-butadiene rubber standards, the

product indicators fully comply with the national standards for food additives butadiene

butadiene rubber, the English name of dissolved polystyrene-butadiene rubber products SSBR,

where $ indicates the use of solvent oil (hexane) polymerization reaction of styrene-butadiene

rubber products, its process requirements are high, product purity is high, Its process requires

that the butadiene raw material is first purified and refined to 99.99% purity of butadiene,

styrene is dried to achieve 99.9% purity, solvent oil water quality must be below 10ppm,

the use of butyl lithium catalyst, rapid reaction, monomer reaction rate of 99.99%, and

then through the agglomeration process, post-processing process, molding packaging,

finished products out of the warehouse!

4

It can be seen that emulsion polystyrene-butadiene gum and dissolved polystyrene-butadiene

gum are three completely different processes, and the quality, quality and physical and

chemical indicators of the products are completely different.

According to the domestic food rubber national standard and the international food rubber

standard comparison "American FCC8, Spanish Royal Decree, French Glue Base Order

Standard"), and the residue of emulsion polyrubber is completely inconsistent, so the

national standard of food-grade styrene-butadiene rubber is obviously not applicable

to the standard range of emulsion polystyrene-butadiene rubber products, the domestic

also is the emulsion poly process production of styrene-butadiene rubber can not be used

in the food-grade additive rubber-based industry, and imported emulsion polystyrene-

butadiene rubber products are widely used in the food processing industry, The reason is

because in the past because there were no domestic enterprises to produce food-grade

styrene-butadiene rubber products, the product is still blank in the country, so domestic

rubber-based users can only rely on foreign imports for a long time, and now there are

domestic enterprises specializing in the production of food rubber, and domestic production

of food rubber enterprises participate in the formulation of food rubber national standards,

but from the current point of view, the relevant departments have not paid attention to

supervision, although imported emulsion polyrubber can also produce rubber-based products,

but the rubber product and the national standard indicators requirements are seriously

inconsistent.

5

But because the China enterprise units using rubber for the production process and processing

technology of food rubber are not clear, They are partial to think that imported products are

better than domestic products just by the hibitual from previously manufacture record and

have been used for decades, so although domestic rubber in the production process and

product quality is better than imported rubber, but some users are still half-believed, not

a large number of use, always think that the United States products are good, after several

years by the rubber base company professional and technical personnel and authoritative

departments on the domestic food rubber test evaluation, Most rubber-based companies

have confirmed the fact that domestic rubber is superior to imported rubber products

inclduing world famous food grade rubber (SBR FOOD CH) users.

6

China food-grade styrene-butadiene rubber (SBR FOOD CH) have obvious advantages,

good product quality, white color, rubber purity up to 99.89%, no peculiar smell, enterprise

procurement volume can be ordered with the production plan, large price advantage, reduce

inventory, involving rubber inventory capital pressure is small, delivery pole service and

other advantages!

Welcome all rubber-based users to purchase food-grade styrene-butadiene rubber products

produced by Changhong Hi-Tech!

WUXI HASEN  is response to sale international