Daily chemicals refer to the industry that produces the chemical products that people need in their daily life. General chemicals have fixed chemical structure and physical and chemical properties. However, natural products come from animals, plants or minerals, and their composition is complex, which can not directly meet the requirements of people's daily life. They must be combined with other chemicals or natural products for processing, so as to become daily chemicals with specific functions.
Daily chemicals are an important part of chemical engineering (especially light chemical engineering), which is characterized by intensive technology, high added value, variety and multidisciplinary. Modern daily chemical products are multidisciplinary developed based on high-tech achievements in chemical engineering, separation engineering, bioengineering, physical chemistry, physiology, medicine, pharmacy, rheology, aesthetics, color science, psychology, and packaging. The high-tech industry that crosses is no longer a simple fine chemical product. For daily chemicals, the daily chemicals listed in the China Chemical Industry Yearbook and the separate statistical output (output value) are mainly synthetic detergents, soaps, flavors, spices, cosmetics, toothpaste, inks, matches, dry batteries, alkylbenzenes, and five. Sodium, tri-gel (bone gel, gelatin, skin glue), glycerin, stearic acid, photosensitive materials (photosensitive film, photosensitive paper), etc.
In terms of categories, general household chemicals are multi-component, multi-phase systems, such as emulsions, suspensions, creams, etc., which are complex thermodynamically unstable systems and belong to non-Newtonian fluid processing. The compatibility, phase, composition, process conditions and storage conditions of the components may affect the stability of the system. In order to obtain a product with good performance, it is necessary to have a clear understanding of the formula design principle, safety performance, stability performance, principle of use effect and the principle of the processing process, and multi-disciplinary collaboration is required.
More natural raw materials, good physiological compatibility, easy biodegradation, non-toxic and non stimulating raw materials are selected for daily chemicals, which are more natural and environmentally friendly. Because we pay more attention to the synergistic effect of various components in the product, introduce microencapsulation and other technologies to realize the high-efficiency performance of components, and make the equipment configuration more reasonable and universal, so the formula of daily chemicals is also more scientific and the production automation is higher. Of course, daily chemicals pay more attention to the attractiveness of dosage form, color and smell, add conditioning, health care and treatment functions, and have better quality.
In addition, daily chemicals are mostly compounded, and the system is a mixture. For example, the detergent is a mixture of a variety of different surfactants and other chemical products (such as foaming agents, foam stabilizers, dispersants and anti-soil reprecipitants). In addition to surfactants, there are various detergent builders (such as 4A molecular sieves, sodium tripolyphosphate, etc.) to enhance the washing effect.
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