| Bayhydrol® UV 2282 | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV 2282 is a waterborne, UV-curing polyurethane dispersion that can be used in the formulation of physically drying, waterborne UV-curing wood and plastic coatings. This product has a flow time at 23°C, (4mmcup) of ≤ 50, a non-volatile content ...展開 Bayhydrol® UV 2282 is a waterborne, UV-curing polyurethane dispersion that can be used in the formulation of physically drying, waterborne UV-curing wood and plastic coatings. This product has a flow time at 23°C, (4mmcup) of ≤ 50, a non-volatile content (1g / 1h / 125°C) of 39 ± 1, and a pH level of 7.75 ± 0.75. Bayhydrol® UV 2282 is used in the formulation of High Quality Waterborne UV-curing Wood coatings, that will normally pass the DIN 68 861-1B norm. After the water has evaporated, the coating is physically dry and handable. UV-Curing (10 m/min per 80 W/cm lamp) will result in a very high final quality. The photo initiator demand is low, 1-2% will be enough (by wt., calculated on solid binder). Coatings based on Bayhydrol® UV 2282 will show good adherence to many substrates, including plastics. 收起 | |
| Bayhydrol® UV 2317 | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV 2317 is a urethane acrylate dispersion that can be used in the formulation of physically drying aqueous UV-curing coatings. This is a clear lacquer that is characterized by its good reemulsification properties and high wet film transparency....展開 Bayhydrol® UV 2317 is a urethane acrylate dispersion that can be used in the formulation of physically drying aqueous UV-curing coatings. This is a clear lacquer that is characterized by its good reemulsification properties and high wet film transparency. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 35.5-37.5, a flow time at 23°C, (4 mm cup) of 15-80, and a pH-value of 6.8-8.5. Bayhydrol® UV 2317 is used in the formulation of aqueous UV-curing coatings, especially for application on wood/wood materials. Generally speaking, the coated surfaces can be sanded before UV curing. Additions of 1-2.5% by wt. photoinitiator, calculated on the solid binder, have proved suitable for initiating the curing reaction. The viscosity is adjusted by the addition of polyurethane thickeners. If antifoams are used, they should be thinned in solvents, especially if application is by curtain coating. 收起 | |
| Bayhydrol® UV 2689/1 XP | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV 2689/1 XP is a UV-curable aliphatic polyurethane dispersion, which can be used in the formulation of industrial waterborne UV clear and pigmented coatings. Main applications of this product are plastic coatings (e.g mobile phones) and wood c...展開 Bayhydrol® UV 2689/1 XP is a UV-curable aliphatic polyurethane dispersion, which can be used in the formulation of industrial waterborne UV clear and pigmented coatings. Main applications of this product are plastic coatings (e.g mobile phones) and wood coatings. Before UV curing, the surface of dried films is soft and slightly tacky, whereas after UV-curing, the coatings are hard with high chemical and mechanical resistance. The product is suitable to achieve high gloss coatings. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 40.0-44.0, a flow time at 23°C, (4 mm cup) of 15.0-50.0, and a pH level of 7.0-8.5. This product is especially suitable for 3C plastic applications e.g. mobile phones and laptops where high performance coatings are required. It is possible to formulate hard high gloss or deep matt clear coats as well as single layer metallic coatings. The resulting coating provides excellent performance meeting the strict requirements of 3C applications. 收起 | |
| Bayhydrol® UV 2720/1 XP | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV 2720/1 XP is used for the formulation of waterborne UV coatings for industrial coating of plastics and wood and other substrates, and is particularly suitable for pigmented systems. As a thermoformable product, it is an ideal solution for po...展開 Bayhydrol® UV 2720/1 XP is used for the formulation of waterborne UV coatings for industrial coating of plastics and wood and other substrates, and is particularly suitable for pigmented systems. As a thermoformable product, it is an ideal solution for postformable coatings. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 39-41, a flow time at 23°C, (4 mm cup) of 15-50, and a pH level of 7.0-9.0. Bayhydrol® UV 2720/1 XP is used for the formulation of waterborne UV coatings, in particular for applications that require good blocking resistance after water evaporation and before UV cure (wood, plastic, pigmented systems). The addition of 1.0 to 2.5 wt. photoinitiator relative to binder has proven effective for initiation. Viscosity is adjusted by the addition of polyurethane thickeners. As the dispersion has a relatively high surface tension, the formulation should always contain a wetting agent, such as BYK® 348 (BYK). Matting agents and additives can be dispersed directly into the formulation using a dissolver. 收起 | |
| Bayhydrol® UV XP 2687 | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV XP 2687 is an urethane Acrylate Emulsion that is used in the formulation of waterborne UV curable coatings for wood. It is an emulsion type with high gloss and strong body. This product has a non-volatile content (1g / 1h / 125°C, convection...展開 Bayhydrol® UV XP 2687 is an urethane Acrylate Emulsion that is used in the formulation of waterborne UV curable coatings for wood. It is an emulsion type with high gloss and strong body. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 46.0-51.0, a viscosity at 23°C of 50-500, and a ph-value of 6.8-8.5. Bayhydrol® UV XP 2687 is used for the formulation of waterborne UV coatings, especially for application on wood/wood materials. As the dispersion has a relatively high surface tension, the formulation should always contain a wetting agent, such as BYK® 348 (BYK), Surfinol MD 20 (Airproducts) or EFKA 3024 (BASF).Viscosity is set by the addition of polyurethane thickeners. Matting agents should be added in the form of pastes. 收起 | |
| Bayhydrol® UV XP 2690 | Covestro (formerly Bayer MaterialScience) 科思创 | Bayhydrol® UV XP 2690 is a UV-curing PU-dispersion that is used for the formulation of waterborne UV coatings for wood and plastic coatings. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 38-40, a viscosity at 23°C of < 80, ...展開 Bayhydrol® UV XP 2690 is a UV-curing PU-dispersion that is used for the formulation of waterborne UV coatings for wood and plastic coatings. This product has a non-volatile content (1g / 1h / 125°C, convection oven) of 38-40, a viscosity at 23°C of < 80, and a pH level of approx. 7.5-9. For the formulation of weather resistant coatings, the use of light protecting agents (preferably a combination of UV absorbers and hindered amine light stabilizers) is recommended. A modification of the photoinitiator component towards longer absorbing types (MAPO, BAPO) might be necessary. The resulting formulation should always be tested in weathering experiments with regard to the specific substrate, application and curing conditions. 收起 | |
| Bayhydrol® UV XP 2775 | Covestro (formerly Bayer MaterialScience) 科思创 | 聚氨酯丙烯酸酯分散體，無溶劑，用於制備水性紫外光固化的木器和塑料用清漆或色漆,尤其是顏料含量很高的木器漆。 |
