Matting Agent DT #

Transcription

1 Advanced Materials Matting Agent DT # POWDER COATINGS TECHNICAL DATA SHEET Applications Properties Processing Key data Solid, colour-stable matting agent for powder coatings For matting of epoxy/polyester and polyester / Araldite PT 81 & PT 91 powder coatings. Matting Agent DT has no side effect on the flow properties, shade or weathering resistance of powder coatings. The mechanical properties of the formulated coating are not influenced by DT With dark shades a slight sweating out effect from the coating surface may be observed under certain circumstances. The effectiveness and the overall performance depends on the selected polyester resin (for hybrid as well as for polyester TGIC / PT 91 systems. The matting agent is added prior to dispersion in the extruder. Attention should be paid to optimum premixing with the resin/hardener and pigment/filler components. The gloss of the end-product can be adjusted by altering the amount of matting agent added. Addition of Calcium carbonate reduces gloss but at the same time reduces the mechanical properties. Specified key data Aspect (visual) Specified key data are individually checked throughout and guaranteed. Typical key data white, yellowish powder Softening point (Mettler, DIN 519) [ C] Flash point (ISO 2592) [ C] Bulk density (ISO 151).3 [g/cm 3 ] Density at 25 C (ISO 813-3).92 [g/cm 3 ] As-supplied form Odour Shelf life (at storage temperature between 2 - C) (see expiry date on original container) Hazardous decomposition products (when disposed of in fire) Disposal l coarse, yellowish powder (< 4 mm) none 3 years carbon monoxide, carbon dioxide, nitrogen oxides and other toxic gases and vapours regular procedures approved by local authorities Typical key data are spot checked; the values are typical for the product and are indicated for information only. The values are not guaranteed. # In addition to the brand name product denomination may show different appendices, which allows us to differentiate between our production sites: e.g. BD = Germany, US = United States, IN = India, CI = China, etc. These appendices are in use on packaging, transport and invoicing documents. Generally the same specifications apply for all versions. Please address any additional need for clarification to the appropriate Huntsman contact. April 16 Matting Agent DT # 1 of 6

2 Optimal amount for matt effect Effect on gloss as a function of amount of Matting Agent DT added to powder surface technologies, pigmented with R-KB-2 (BAYER TITAN), binder/pigment ratio = 2:1 p.b.w. Araldite PT 81/Uralac P (DSM) 1 % Gloss at angle 8 % Gloss at angle Araldite GT 74/Crylcoat (Cytec) % Matting Agent DT % Matting Agent DT Curing: 1 min C Curing: 3 min 17 C Curing: 3 min 1 C Curing: 1 min C Storage Handling precautions Matting Agent DT should be stored in a dry place, preferably in the sealed original container, at temperatures between 2 and C. The product should not be stored exposed to direct sunlight. Forced ventilation and dust masks or respirators should be used in order to ensure that operatives do not breath in dust generated by resin, hardener or formulated powder coatings. Mandatory and recommended industrial hygiene procedures should be followed whenever our products are being handled and processed. For additional information please consult the corresponding product safety data sheets and the brochure Hygienic precautions for handling plastics products. Personal hygiene Safety precautions at workplace protective clothing gloves arm protectors goggles/safety glasses respirator/dust mask Skin protection before starting work Skin protection after washing Cleansing of contaminated skin Disposal of spillage Ventilation of workshop Ventilation of workplaces yes essential recommended when skin contact likely yes no Apply barrier cream to exposed skin Apply barrier or nourishing cream Dab off with absorbent paper, wash with warm water and alkali-free soap, then dry with disposable towels. Do not use solvents Soak up with sawdust or cotton waste and deposit in plastic-lined bin Renew air 3 to 5 times an hour Exhaust fans. Operatives should avoid inhaling vapours First aid Contamination of the eyes by resin, hardener or mix should be treated immediately by flushing with clean, running water for 1 to 15 minutes. A doctor should then be consulted. Material smeared or splashed on the skin should be dabbed off, and the contaminated area then washed and treated with a cleansing cream (see above). A doctor should be consulted in the event of severe irritation or burns. Contaminated clothing should be changed immediately. Anyone taken ill after inhaling vapors should be moved out of doors immediately. In all cases of doubt call for medical assistance. April 16 Matting Agent DT # 2 of 6

3 POWDER COATINGS SPECIMEN FORMULATIONS Applications Properties Typical formulations Low gloss powder surface technologies formulated with Matting Agent DT Hybrid-systems based on Araldite GT 332 Araldite GT 63 Araldite GT 74 SP/TGIC-systems based on Araldite PT 81 Matting Agent DT is suitable for use in epoxy/polyester powder coatings based on bisphenol-a epoxy resins (e.g. Araldite GT 74, GT 73, GT 1999, GT 63) or in chalking-proof polyester powder coatings formulated with Araldite PT 81 for outdoor applications. The addition of Matting Agent DT allows gloss levels down to about 3 % to be imparted to epoxy/polyester or polyester/araldite PT 81 powder coatings. Little yellowing results from over-baking. Matting Agent DT has almost no effect on the mechanical properties of a cured formulation. A waxy leaching-out effect may occur in the surfaces of low-gloss dark coloured formulations. Formulations incorporating Matting Agent DT show good long-term storage stability and exhibit excellent flow properties. Epoxy/polyester The epoxy resins Araldite GT 74, GT 1999, GT 63 and GT 73 are recommended in combination with suitable polyesters for the formulation of epoxy/polyester hybrid powder surface technologies. Formulations based on Uralac P 5127 (DSM) or Crylcoat (Cytec) in combination with Araldite GT 74 can be cured for 3 minutes at 1 C or 1 minutes at C (table 1 and fig. 1). April 16 Matting Agent DT # 3 of 6

4 Typical formulations Table 1 Formulations based on Araldite GT 74/Crylcoat (Cytec) (continuing) Table 1 Epoxy/polyester powder formulations (white pigmented) Formulation No Araldite GT 74 [p.b.w.] Araldite GT Uralac P 5127 (DSM) Crylcoat (Cytec) Matting Agent DT Benzoin (BASF) TiO 2 R-KB-2 (Bayer) Gel time at 18 C [s] Cure schedule [min/ C] 1/ 1/ 1/ 1/ 1/ 1/ Film thickness [µm] Reverse impact [cm kg] Erichsen distensibility [mm] Gloss at angle [%] , % Matting Agent DT * * on binder = Araldite GT 74 and GT 332, Uralac P 5127: formulations Araldite GT 74 and GT 332, Crylcoat : formulations Fig. 1 Gloss dependence on weight % of Matting Agent DT on binder Gloss level at angle (%) Weight (%) of Matting Agent DT Araldite GT 74, GT 332, Uralac P 5127 Araldite GT 74, GT 332, Crylcoat April 16 Matting Agent DT # 4 of 6

5 Typical formulations (continuing) Another series of matt epoxy/polyester powder coatings incorporating Matting Agent DT and showing excellent flow properties can be formulated using the polyester Crylcoat or Formulations based on these two polyesters in combination with Araldite GT 74 or Araldite GT 63 are shown in table 2. Table 2 Epoxy/polyester formulations based on Crylcoat or Crylcoat (Cytec) and incorporating Matting Agent DT Formulation No Araldite GT 74 [p.b.w.] Araldite GT Crylcoat Crylcoat Matting Agent DT Additol P896 (Cytec) Benzoin Blanc Fixe Kronos 21 (KRONOS) Gel time at 18 C [s] Cure schedule [min/ C] /19 /19 /19 /19 Reverse impact [cm kg] Flow excellent excellent excellent excellent Gloss at angle [%] % Matting Agent DT * * by weight in formulation Polyester/TGIC Uralac P is recommended for polyester/araldite PT 81 formulations. Cure can be effected at C for 1 minutes or 1 C for 3 minutes to obtain semi-matt coatings with excellent flow characteristics (table 3 and fig. 2). The addition of Matting Agent DT to polyester/araldite PT 81 powder coatings does not impair their weather resistance in outdoor applications. Table 3 Araldite PT 81/polyester powder coatings (white pigmented) Formulation No Araldite PT 81 [p.b.w.] Uralac P (DSM) Matting Agent DT Modaflow powder II (Monsanto) Benzoin TiO 2 R-C-566 (Sachtleben) Gel time at 18 C [s] Cure schedule [min/ C] 1/ 1/ 1/ Film thickness [µm] Reverse impact [cm kg] Erichsen distensibility [mm] Gloss at angle [%] % Matting Agent DT April 16 Matting Agent DT # 5 of 6

6 Fig. 2 Gloss dependence on weight % of Matting Agent DT on binder Gloss level at angle (%) Weight (%) of Matting Agent DT Araldite PT 81, Uralac P Huntsman Advanced Materials warrants only that its products meet the specifications agreed with the buyer. Typical properties, where stated, are to be considered as representative of current production and should not be treated as specifications. Huntsman Advanced Materials (Switzerland) GmbH Klybeckstrasse 57 Basel Switzerland Tel: +41 () Fax: +41 () advanced_materials@huntsman.com The manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is not implied by this publication. While all the information and recommendations in this publication are, to the best of our knowledge, information and belief, accurate at the date of publication, NOTHING HEREIN IS TO BE CONSTRUED AS A WARRANTY, EXPRESS OR OTHERWISE. IN ALL CASES, IT IS THE RESPONSIBILITY OF THE USER TO DETERMINE THE APPLICABILITY OF SUCH INFORMATION AND RECOMMENDATIONS AND THE SUITABILITY OF ANY PRODUCT FOR ITS OWN PARTICULAR PURPOSE. The behaviour of the products referred to in this publication in manufacturing processes and their suitability in any given end-use environment are dependent upon various conditions such as chemical compatibility, temperature, and other variables, which are not known to Huntsman Advanced Materials. It is the responsibility of the user to evaluate the manufacturing circumstances and the final product under actual end-use requirements and to adequately advise and warn purchasers and users thereof. Products may be toxic and require special precautions in handling. The user should obtain Safety Data Sheets from Huntsman Advanced Materials containing detailed information on toxicity, together with proper shipping, handling and storage procedures, and should comply with all applicable safety and environmental standards. Hazards, toxicity and behaviour of the products may differ when used with other materials and are dependent on manufacturing circumstances or other processes. Such hazards, toxicity and behaviour should be determined by the user and made known to handlers, processors and end users. Except where explicitly agreed otherwise, the sale of products referred to in this publication is subject to the general terms and conditions of sale of Huntsman Advanced Materials LLC or of its affiliated companies including without limitation, Huntsman Advanced Materials (Europe) BVBA, Huntsman Advanced Materials Americas Inc., and Huntsman Advanced Materials (Hong Kong) Ltd. Huntsman Advanced Materials is an international business unit of Huntsman Corporation. Huntsman Advanced Materials trades through Huntsman affiliated companies in different countries including but not limited to Huntsman Advanced Materials LLC in the USA and Huntsman Advanced Materials (Europe) BVBA in Europe. Araldite and Aradur are registered trademark of Huntsman Corporation or an affiliate thereof. Copyright 15 Huntsman Corporation or an affiliate thereof. All rights reserved. April 16 Matting Agent DT # 6 of 6