Ouyang, Siming; Xie, Yuqing; Fu, Wangxing; Ding, Yongbo; Shen, Liang published the artcile< Preparation of autoxidative water-reducible alkyd resins from waste polyethylene terephthalate>, Related Products of 112-63-0, the main research area is autoxidative aqueous reducible alkyd resin waste polyethylene terephthalate; hardness; physical properties; waste polyethylene terephthalate; water resistance; water-borne alkyd resin.
In this paper, the waste polyethylene terephthalate (PET) was glycolyzed by trimethylolpropane with zinc acetate as catalyst. The effects of different content glycolysis product of waste PET on the appearance, viscosity, particle size and mol. weight of autoxidative water-reducible alkyd resins and the corresponding film adhesion, flexibility, impact resistance, gloss, hardness and chem. resistance were studied. Meanwhile, exptl. results were compared with com. water-reducible alkyd and water-reducible alkyd without the glycolysis product of waste PET. The results show that the maximum concentration of PET in autoxidative waterreducible alkyd resins can reach 8.5 weight%, and the mol. weight, particle size and viscosity of water-reducible alkyd resin do not change much with the increase of PET concentration The introduction of PET resulted in the viscosity of waterreducible alkyd resins being greater than that of water-reducible alkyd resin without PET; this is mainly because PET contains harder terephthalic acid monomer units. However, the particle size of water-reducible alkyd resins with waste PET is significantly lower than that of the water-reducible alkyd resin without PET; this is due to PET-free water-reducible alkyd resin containing more pentaerythritol with greater steric hindrance. In addition, the hardness of the water-reducible alkyd resin paint film (PET content is 8.5%) reaches 1H, which is higher than the hardness (HB) of the water-reducible alkyd resin paint film without PET and the com. alkyd resin paint film, while the phys. properties and chem. resistance of the former are comparable to those of the latter two kinds of paint films. Therefore, the use of waste PET in water-borne coatings systems not only reduces the cost of coatings, but also opens up a new market for recycled PET, which may contribute a promising method for management of waste PET.
Royal Society Open Science published new progress about Adhesion, physical. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.
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