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A kind of preparation method and application of waterborne polyester resin
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A water-based polyester resin, polyester resin technology, applied in polyester coatings, coatings, fiber processing and other directions, can solve problems such as engineering application limitations, and achieve good economic benefits, high crystallization point, and good heat resistance.
Active Publication Date: 2020-06-30
绍兴立源科技信息有限公司
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Problems solved by technology
Although polyester is widely used in the manufacture of polyester, it is still subject to certain limitations in engineering applications.
Method used
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Embodiment 1
[0042] 4L stainless steel reaction kettle, pilottest material 3.5KG, pure terephthalic acid, content 99.8, ethylene glycol, ratio 1: 2.8mol, reaction temperature 230-260 ℃, reaction pressure 0.4Mpa, total reaction time 10h; Pilot test product 2.3KG, acid value 3KOHmg / L, translucent milky white waxy body.
[0043] 70% of the above-mentioned powdery ethylene terephthalate + 30% of polyurethane resin are mixed evenly, or 70% of the total amount of pure water is added, the colloid mill is finely ground, coating, dipping, spraying, molding, 140 ° C Bake for 40 minutes to obtain a polyurethane-modified saturated polyester resin sample.
Embodiment 2
[0045] 4L stainless steel reaction kettle, pilottest material 3.5KG, pure terephthalic acid, content 99.8, ethylene glycol, ratio 1: 2.8mol, reaction temperature 230-260 ℃, reaction pressure 0.4Mpa, total reaction time 10h; Pilot product 2.8KG, acid value 3KOHmg / L, translucent milky white waxy body.
[0046] The above powdery ethylene terephthalate 70% + phenolic resin 30% are mixed evenly, and then 70% of the total amount of pure water is added, the colloid mill is finely ground, coated, dipped, sprayed, molded, and baked at 140°C Bake for 40 minutes to obtain a phenolic resin modified saturated polyester resin sample.
Embodiment 3
[0048] 4L stainless steel reaction kettle, pilottest material 3.5KG, pure terephthalic acid, content 99.8, ethylene glycol, ratio 1: 2.8mol, reaction temperature 230-260 ℃, reaction pressure 0.4Mpa, total reaction time 10h; Pilot product 2.5KG, acid value 3KOHmg / L, translucent milky white waxy body.
[0049] The above powdery ethylene terephthalate 70% + amino resin 30% are mixed evenly, or 70% of the total amount of pure water is added, the colloid mill is finely ground, coating, dipping, spraying, molding, 140 ° C Bake for 40 minutes to obtain an amino resin modified saturated polyester resin sample.
[0050] Through research, the present invention is based on the traditional saturated polyester resin production method, and uses a large amount of low-cost terephthalic acid as the main raw material production process to synthesize double-terminated bis-dibasic terephthalate basic solid polyester resin The route as the raw material; the other is the route of the product by a...
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Abstract
The invention discloses a preparation method and application of waterborne polyester resin. The preparation method and application has the advantages that pure terephthalic acid or terephthalic acid is used as the main raw material to produce the waterborne saturated polyester resin applicable to fields such as saturated polyester resin materials, waterborne polyester resincoating and waterbornepolyester resin adhesives; the preparation method of the superfine waterborne saturated polyester resin is innovated; multipurpose application approaches of the terephthalic acid can be exploited by using the principles and conditions, the prepared waterborne saturated polyester resin forms network crosslinking by using high-temperature baking, a traditional waterborne polyester resin preparationprocess using alkali to neutralize acid carboxyl is improved, and the prepared completely green and environment-friendly polyester resin is huge in economic and social benefits.
Description
technical field [0001] The invention belongs to the field of application and preparation of water-based polyester resins, and relates to a manufacturing method and application of water-based saturated polyester resins. Background technique [0002] Polyester resin is a general term for polymer compounds formed by esterification and polycondensation of dibasic acid or polybasic acid and dibasic alcohol or polyhydric alcohol. Polyester resins are divided into saturated polyester resins and unsaturated polyester resins. Saturated polyesters refer to polymeric esterification products that do not contain unsaturated bonds other than benzene rings in the synthetic raw materials. The main raw materials for synthesizing saturated polyester resins are dibasic acids, dibasic alcohols and tribasic acids, tribasic alcohols, and individual monobasic alcohols or monobasic acids. The most commonly used alcohols are neopentyl glycol, ethylene glycol, and propylene glycol, the trihydric alc...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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