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VINNOL® CE 35 (EX)
VINNOL® CE 35 (EX) is an aqueous dispersion of a terpolymer of vinyl chloride, vinyl acetate and ethylene.
特性
- VINNOL® CE 35 (EX) is a stiff film-former and imparts excellent heat-sealability and high frequency (HF)-weldability to nonwovens & textiles substrates.
- Because of its high chlorine content, VINNOL® CE 35 (EX) can be used in conjunction with antimony oxide, phosphorous-nitrogen compounds or other flame-retardant additives to produce flame retardant coatings.
- It also especially suitable for making plasticizer-free heat sealable and high frequency weldable coatings on paper and cardboard.
General
VINNOL® CE 35 (EX) is especially suitable as binder for heats-sealable/ HF-weldable waddings. It sprays well and does not generate unpleasant odors during processing.
Polymer Dispersions
VINNOL® CE 35 (EX) is miscible with most anionic and/ or nonionic polymer dispersions especially with VINNOL® CEN 2752. The latter will soften hand feel.
Solvents and Plasticizers
The flame-retardant effect of VINNOL® CE 35 (EX) can be increased by adding, for example phosphorous-nitrogen compound, which also softens the polymer film and lowers the glass transition and minimum film forming temperatures.
The addition should be made at room temperature, but the mixture should then be heated at about 50 °C for 1 hour to ensure that the plasticizer diffuses completely into the resin particles.
Defoaming Agents
If necessary, VINNOL® CE 35 (EX) dispersion can be defoamed with 1) SILFOAM® SE1662, for example. The efficacy and compatibility of the formulation chosen should always be checked.
Thickening Agents
Polyurethane thickeners such as 2)ROHAGIT® SD15, 3)ACRYSOL TM RM8, 4)Rheovis® AS 1125 are recommended to use with VINNOL® CE 35 (EX). The efficacy and compatibility of the formulation chosen should always be checked.
1) SILFOAM® is a trademark of Wacker Chemie AG
2) ROHAGIT® is a trademark of Synthomer PLC
3) ACRYSOLTM is a trademark of Dow Chemical Company
4) RHEOVIS® is a trademark of BASF SE
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Wacker Chemie AGGisela-Stein-Strasse 1
81671 Munich
Germany
储存
When the dispersion is stored in tanks, proper storage conditions must be maintained. If stored in the original, unopened containers at cool (below 30 °C), but frost-free temperatures the product has a shelf life of 9 months from the date of manufacture. Any longer periods for the maximum storage period that may be described in the Certificate of Analysis which accompanies each shipment of the product, take preference over this suggestion in which case the time period stated in the Certificate of Analysis shall be solely authoritative. Iron or galvanized-iron equipment and containers are not recommended because the dispersion is slightly acidic. Corrosion may result in discoloration of the dispersion or its blends when further processed. Therefore, the use of containers and equipment made of ceramics, rubberized or enameled materials, appropriately finished stainless steel, or plastic (e.g. rigid PVC, polyethylene or polyester resin) is recommended. As polymer dispersions may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore recommended prior to utilization of the product.
Preservation for Transport, Storage and further Processing
The product is adequately preserved during transportation and storage if kept in the original, unopened containers. However, if it is transferred to storage tanks, the dispersion should be protected against microbial attack by adding a suitable preservative package. To maintain proper storage conditions appropriate measures should also be taken to ensure cleanliness of the tanks and pipes. In a storage tank in which the product is not stirred, it is advisable to contact your biocide representative/supplier. Proper procedures must be set up in order to prevent microbial attack between necessary periodic tank cleaning and sanitization. These procedures will vary, since loading and unloading practices in each storage situation will differ slightly. Finished products manufactured from polymer dispersions usually also require preservation. The type and scope of preservation will depend on the raw materials used and the anticipated sources of contamination. The compatibility with other components and the efficacy of the preservative should always be tested in the respective formulation. Preservative manufacturers will be able to advise you about the type and dosage of preservative required.
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