LIPOLAN T 26H90 is an aqueous dispersion of a reinforced styrene-butadiene copolymer with a high solids content. The emulsifier used is an alkaline salt of fatty acids, which gives the product good stability and foamability. LIPOLAN T 26H90 was developed for gelled and non-gelled foam rubber backings for tufted carpets. Foam rubber backings containing LIPOLAN T 26H90 are softer than those based on LIPOLAN T 24H60. The handle of the finished article is influenced mainly by the choice of the precoat.
LIPOLAN T 26H90 has good storage characteristics, and is under normal conditions mechanically stable.
LIPOLAN T 26H90 does not contain antioxidant. Dried coagulate or films tend, in the presence of oxygen (i.e. in air), to autoxidation. It is therefore necessary to add antioxidant to the dispersion before processing. This can be achieved either by the direct addition of an emulsion, or by the addition of a vulcanizing dispersion containing antioxidant. A considerably higher compression hardness is achieved because of the reinforcing component present in the latex, when compared with unreinforced dispersion or natural latex. LIPOLAN T 26H90 has to be vulcanized in a similar manner to natural latex. Suitable rubber chemicals must be used in the vulcanization paste to ensure that under normal manufacturing conditions an optimum quality level is maintained. LIPOLAN T 26H90 can be used for foam rubber backings with or without filler. The filler content of the foam compound should be kept as low as economically possible, to ensure that the finished article is capable of being recycled after its useful life. The mechanical and physical properties depend on the filler level and the foam density. The abrasion resistance, resilience and adhesion of the foam backing to the carpet are dramatically improved, when very low filled, or unfilled compounds are used. There is also striking improvement to the dimensional stability of the foam as a result of the reduced water absorption.
Shipping and Storage
LIPOLAN T 26H90 is normally delivered in road tankers. Shipment in drums and 1 ton containers is also possible for customers who are just taking small quantities. The storage temperature of the dispersion should not fall below + 5 °C and not exceed + 40 °C. In air-tight, unopened, original drums or containers, and provided the storage conditions are met, the dispersion is stable for 6 months after delivery. However a slight drying of the surface, or some cream formation cannot be ruled out. It is therefore advisable that the dispersion, or compounds made from it, should be stirred, or mixed before use. The contents of drums, or containers, should be used up as soon as possible after opening. The pH value of the dispersion may decrease due to absorption of carbon dioxide from air. If the pH drops below 10 it must be readjusted to the initial value with an aqueous 5 % potassium hydroxide solution.
Product Security/Health and Safety
LIPOLAN T 26H90 is, according to the German "Gefahrstoffverordnung" and the EU Directive 67/548/EWG, not subject to the labelling provisions for hazardous substances. It is not subject to any current transport regulations for hazardous materials. If you have further questions please contact our Technical Service Department.
Tel.:+49(0)2365 / 49-2819
Fax:+49(0)2365 / 49-2529
Effluents and Pollution Control
When LIPOLAN T 26H90 is present in effluent water it can be removed by a suitable flocculation method. The dumping or burning of solid containing residues from this dispersion normally requires special measures. Local disposal regulations should be observed. The emulsifier contained in the dispersion is biodegradable. The dispersion meets the GuT (Gemeinschaft umweltfreundlicher Teppichboden) requirements regarding volatile organic compounds. LIPOLAN T 26H90 is, according to the German "Gefahrstoffverordnung" and the EU Directive 67/548/EWG, not subject to the labelling provisions for hazardous substances. It is not subject to any current transport regulations for hazardous materials. If you have further questions please contact our Technical Service Department. Tel.:++49(0)2365 / 49-2819 Fax:++49(0)2365 / 49-2529
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