| For Paint Manufacturers worldwide, there has | | | | temperature can effect the stability. |
| come a radical new development in the legion | | | | Solvitex has potentially proven to be stable |
| of Thickening Agents & Colloidal stabilizer | | | | under those conditions. |
| for Aqueous Latex Paints. So far most of the | | | | |
| companies producing aqueous Paint emulsions, | | | | Amongst HEC, I personally find Cellosize of |
| the most preferred thickening agent was | | | | Dow as the most stable product compared to |
| Hydroxy ethyl cellulose (HEC). The HEC based | | | | Bermocoll & Tylose. |
| thixotropic additives is produced by some of | | | | |
| the renowned multi-national companies such as | | | | Myself as Paint formulator & other colleagues |
| Hercules, Akzo Nobel & Dow. | | | | working in different companies had a dilemma |
| | | | existing for selection. For cheaper Paints |
| Here we refer to a Biopolymer based on | | | | the Stronger product or High Viscosity grades |
| Polysacchride derived from controlled | | | | were used such but there always was a |
| derivatisation process from plant origin. The | | | | flocculation after some period on shelf |
| product developed by Asian Trade Link | | | | storage. For the Expensive ones we had to |
| Chemicals Division in India has already been | | | | prefer Medium Viscosities grade to overcome |
| a successful venture for replacement of HECs | | | | shelf storage time. Most of the companies |
| for many paint companies. The Product is | | | | carry the same practice. |
| known as Solvitex thickening agent & | | | | |
| colloidal stabilizer. | | | | When I came across Solvitex range of |
| | | | Thickeners I was given much competitive |
| The solvitex range of products is offered in | | | | prices. Priced at least 10% lower than HEC |
| wide range of viscosities of aqueous | | | | based Products, but my major concern was to |
| solutions. It comes in Powder form of | | | | check the colloidal stabilization. The |
| Offwhite color and the thickening properties | | | | Product was immediately tested and was found |
| are similar to HEC. | | | | to perform excellent. |
| | | | |
| But the Advantages of Solviex against HECs | | | | Apart from that, Solvitex has provided better |
| are many. The prime factor is the stability & | | | | color acceptance & and coatabilty. |
| economic pricing. Its been observed that for | | | | |
| a Medium viscosity range of products such as | | | | Sooner we came across Solvizen developed by |
| Natrosol 250 HBR or Bermcoll 381 the intial | | | | the same company for more economic & cheaper |
| drop after settling is by 20% and then the | | | | Price. The thickening & stability properties |
| finished paint adheres to be stable for six | | | | was the same but economically priced. |
| months.and the viscosity further drops. | | | | |
| Solvitex has an initial drop of settling to | | | | However, The Water solution clarity of |
| 10% and the product is stable in physical | | | | Solvizen was not as clear as of Solvitex or |
| observation for more than 1year exhibiting | | | | HECs. It was slight turbid. But when |
| the same viscosity. | | | | incorporated in Paints, we couldn't find any |
| | | | difference. Again the Paint was stable |
| As known by many Paint technicians, its | | | | physically observed. |
| inevitable that the stability of thickening | | | | |
| agent after incorporating in the Paint | | | | As a Paint formulator from past 2 decades and |
| system, is delicate towards wide temperature | | | | based on my experiences, I suggest to all |
| changes. Especially applicable for Export | | | | those technicians in the same field to try |
| shipments when the Paint under goes through | | | | Solvitex & Solvizen range of Thickening |
| various temperature conditions during its | | | | agents. |
| transit. A sudden drop & rise in outside | | | | |