F66 anti-mildew coating is a two-component coating made of organic resin and inorganic nano-mildew inhibitor, etc. It is divided into two kinds of primer and topcoat. Is to improve the food industry (QS certification), pharmaceutical industry (GMP certification) workshop walls, canopy environment with decorative anti-mildew, anti-corrosion, dustproof coating.
The main chain cleavage type macromolecular photoinitiator is rare, and benzoin ether polycarbonate is representative. Using such photoinitiators can photosynthesize block copolymers to obtain polymer materials with more balanced or excellent properties.
The side chain hydrogen abstraction type macromolecular photoinitiator generally connects the photoactive aromatic ketone structures such as benzophenone and thioxanthone as side groups to the macromolecular chain. Several typical benzophenone side chain polymers are of formula PBP-1~PBP-3l341. The initiation activity of macromolecular benzophenone is higher than that of small molecule benzophenone, and the activity of copolymer PB-2 is higher than that of homopolymer PB-3. This reflects the so-called polymer effect, because in the macromolecular benzophenone polymer, the excited state hydrogen abstraction process hdpe wax msds can be completed in the molecule, and the efficiency is higher than the bimolecular process of small molecule benzophenone and active amine. Many active C-H structures can be used as hydrogen abstraction objects for excited benzophenone units. The local concentration of benzophenone unit in PBP 3 homopolymer is too high, and the excited state of the photoactive group is prone to bimolecular self-quenching. In the copolymer PBP-2, the benzophenone unit is appropriately diluted. The photoinitiation activity of PBP-1 is also higher than that of PBP-3, mainly because the longer ether chain linking arm in PBP-1 can provide a large amount of active hydrogen to the benzophenone unit and accelerate the hydrogen abstraction process.
Lucanthone can also be transformed into a macromolecular photoinitiator through copolymerization or grafting reaction , and the photochemical behavior and photoinitiation activity are not much different from those of small molecule Lucanthone. After macromolecularization, the dispersibility of Lucanthone has been improved very well.
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