The leading supplier of suspending agents for polyvinylchloride (PVC) manufacture

Synthomer’s Alcotex® products improve your PVC manufacturing. Over the past 60+ years we have become the leader in PVOH suspending agents for the PVC industry. Alcotex® products are a critical component of PVC suspension recipes globally, delivering the high performance expected in the industry.

The Alcotex® manufacturing process is unique. Our polymerisation and hydrolysis methods impart key characteristics to the polyvinyl alcohol, giving a robust, universal product for many PVC technologies and PVC resin types.

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TradenameChemistryDescription
ALCOTEX™ 225OTH

Synthomer Ltd has developed Alcotex 225 for use as build-up suppressant for vinyl chloride suspension polymerisation. It eliminates build-up on the reactor walls leading to a substantially higher number of production runs before the reactor has to be opened and pressure cleaned. This results in higher productivity rates and a better quality PVC resin.

ALCOTEX™ 234OTH

Synthomer Ltd has developed Alcotex 234 for use in conjunction with Alcotex 225 as a buildup suppressant for vinyl chloride suspension polymerisation. It eliminates build-up on the reactor baffles and stirrer or areas of poor surface quality. Use of Alcotex 234 will lead to a substantially higher number of production runs before the reactor has to be opened and pressure cleaned. This results in higher productivity rates and a better quality PVC resin.

ALCOTEX™ 432PPVOH

Alcotex 432P is a 43% hydrolysed polyvinyl alcohol supplied as a low viscosity methanol based solution. It has been specifically developed by Synthomer Limited as a secondary suspending agent for vinyl chloride suspension polymerisation.

It may be used in conjunction with conventional primary suspending agents. In optimised recipes, improvements can be obtained in the porosity/bulk density relationship. Better porosity facilitates both monomer removal and plasticiser uptake. These criteria are further enhanced when Alcotex 432P is used with the Alcotex range of primary suspending agents.

ALCOTEX™ 45PVOH

Alcotex 45 is a 45% hydrolysed polyvinyl alcohol supplied as a low viscosity solution in a water/isopropyl alcohol solution. It has been specifically developed as a secondary suspending agent for vinyl chloride suspension polymerisation. It may be used in conjunction with conventional primary suspending agents. In optimised recipes, improvements can be obtained in the porosity/bulk density relationship. Better porosity facilitates both monomer removal and plasticiser uptake. These criteria are further enhanced when Alcotex 45 is used with the Alcotex range of primary suspending agents.

NMR measurements have shown that Alcotex 45 has a random distribution of acetate groups.

ALCOTEX™ 55-002HPVOH

Alcotex 55-002H is a colloidal dispersion of polyvinyl alcohol. It has been specifically developed by Synthomer Ltd as a secondary suspending agent for vinyl chloride suspension polymerisation. It may be used in conjunction with conventional primary suspending agents. In optimised recipes, improvements can be obtained in the porosity/bulk density relationship. Better porosity facilitates both monomer removal and plasticiser uptake. These criteria are further enhanced when Alcotex 55-002H is used with the Alcotex range of primary suspending agents.

NMR measurements have shown that Alcotex 55- 002H has a random distribution of acetate groups.

ALCOTEX™ 552PPVOH

Alcotex 552P is an aqueous solution of a 55% hydrolysed polyvinyl alcohol. It has been developed by Synthomer Ltd as a porosity enhancement agent for PVC suspension polymerisation. It has a low residual methanol content. Alcotex 552P can be used in conjunction with conventional primary suspending agents.

In optimised recipes, improvements can be obtained in the porosity/bulk density relationship. Better porosity facilitates both monomer removal and plasticiser uptake. These criteria are further enhanced when Alcotex 552P is used with the Alcotex range of primary suspending agents.

NMR measurements have shown that Alcotex 552P has a random distribution of acetate groups.

 

ALCOTEX™ 72.5PVOH

Alcotex 72.5 is a polyvinyl alcohol which has been specifically developed for use as a primary suspending agent for vinyl chloride suspension polymerisation. It is manufactured by Synthomer Ltd using our exsclusive process which has advantages over other manufacturing methods, in that it enables more efficient control over the degree of hydrolysis and particle size of the product. 

ALCOTEX™ 7206PVOH

Alcotex 7206 is a 72.5% hydrolysed, low/ medium molecular weight polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerisation.

NMR measurements have shown that Alcotex 7206 has a blocky distribution of acetate groups.

ALCOTEX™ 80PVOHAlcotex 80 is an 80% hydrolysed high molecular weight polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerisation.
ALCOTEX™ 8048PVOH

Alcotex 8048 is an 80% hydrolysed, high molecular weight polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerisation.

ALCOTEX™ 8847PVOH

Alcotex 8847 is an 88% hydrolysed polyvinyl alcohol for use in speciality applications such as vinyl acetate containing copolymer resins as well as in standard grades.

ALCOTEX™ B72PVOH

Alcotex B72 is polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerisation. It is manufactured by Synthomer UK Ltd. using our exclusive manufacturing process which has advantages over other manufacturing methods, in that it allows more efficient control over the degree of hydrolysis and particle size of the product.

NMR measurements have shown that Alcotex B72 has a block distribution of acetate groups.

ALCOTEX™ WD100PVOH

Alcotex WD100 is an aqueous solution of a 43% hydrolysed polyvinyl alcohol. It has been specifically developed by Synthomer Ltd as a secondary suspending agent for vinyl chloride polymerisation. Infinitely dilutable in water, and with an extremely low methanol content, Alcotex WD100 offers increased PVC resin porosity and reduced levels of gels or ‘fish eyes’ when compared to traditional products.In optimised recipes, improvements can be obtained in the porosity/bulk density relationship. Better porosity facilitates both monomer removal and plasticiser uptake. These criteria are further enhanced when Alcotex WD100 is used with the Alcotex range of primary suspending agents. 

Alcotex WD100 is also compatible with other conventional primary suspending agents.


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