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[Chemical Knowledge]：Properties and uses of rosin

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The nature and use of rosin in the field of raw materials for chemical production

Abstract

This paper introduces in detail the nature and use of rosin in the field of raw materials for chemical production. Rosin, as a natural resin acid, has unique chemical and physical properties, so it plays an important role in the production of many chemical products. Firstly, the basic properties of rosin were summarized, including its composition, structure, physical state and chemical properties. Then, the various uses of rosin in chemical production are described in detail, such as adhesives, emulsifiers, preservatives, plasticizers, etc. Finally, the article also discusses the production process of rosin and its development trend in chemical production.

keywords: rosin, chemicals, production of raw materials, properties, uses

1. introduction

rosin is a natural resin acid, mainly from the pine resin secretion. Due to its unique chemical and physical properties, rosin plays an important role in the production of many chemicals. This article will introduce in detail the nature and use of rosin in the field of chemical production raw materials, so that readers can better understand and apply rosin.

2. the properties of rosin

2.1 composition and structural

rosin is mainly composed of resin acid and a small amount of fatty acid, in which the main component of resin acid is abietic acid. Rosin contains carboxyl groups and conjugated double bonds in its structure, making it acidic and unsaturated.

2.2 physical state

rosin is solid at room temperature, transparent or translucent. Its melting point is higher, generally between 110-135 ℃.

2.3 chemical properties

rosin is acidic and can react with bases to form salts. In addition, rosin also has unsaturation, can occur addition, oxidation and other reactions.

3. the use of rosin in the production of chemical products

3.1 adhesive

rosin can be used as a binder for the production of glue, ink and so on. Because of its good adhesion and film formation, it can improve the adhesion strength and water resistance of glue and ink.

3.2 emulsifier

rosin can be used as emulsifier for making emulsion, paint and so on. Because of its surface activity, it can reduce the surface tension of the liquid, so that different liquids can be mixed evenly.

3.3 preservative

rosin has good antibacterial and preservative effect, and can be used as a preservative for the preservation of food, medicine and other products. At the same time, due to its high safety, it will not affect human health.

3.4 plasticizer

rosin can be used as a plasticizer in the production of plastic products, can improve the flexibility of plastic, ductility and processability. At the same time, because of its good heat resistance and weather resistance, it can also improve the service life of plastic products.

4. the production process and development trend of rosin

4.1 production process
the production process of
rosin mainly includes collection, distillation, purification, crystallization and other steps. Among them, collection is to collect the resin secreted by pine trees; distillation is to heat and distill the collected resin to separate rosin and turpentine; purification is to purify the distilled rosin to remove impurities; crystallization is to cool and crystallize the purified rosin to obtain the finished product.

4.2 development trend

With the continuous progress of science and technology, the production process of rosin is constantly improving and optimizing. In the future, the production of rosin will pay more attention to environmental protection and sustainable development, and adopt more efficient, energy-saving and environmentally friendly production technology and equipment to improve the output and quality of rosin. At the same time, with the in-depth study of the properties and uses of rosin, its application fields will continue to expand.

5. Conclusion

rosin, as a natural resin acid, has unique chemical and physical properties, so it plays an important role in the production of chemical products. This paper introduces the properties and uses of rosin in detail, including its applications as adhesives, emulsifiers, preservatives and plasticizers. At the same time, the production process and development trend of rosin were also discussed. Through the in-depth understanding and research of rosin, we can better apply and develop rosin industry and promote the sustainable development of chemical production.

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