Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of pale rosin

A technology for rosin and light color, applied in the field of preparation of light-colored rosin, can solve the problems of unsatisfactory decolorization effect of saponification method, insignificant effect of adsorption decolorization method, large amount of solvent of crystallization extraction method, etc., and achieves low production cost and softening point. High and wide range of effects

Inactive Publication Date: 2014-10-08
GUANGXI ZHONGCHANG RESIN
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of the adsorption decolorization method is not obvious, and the loss of rosin is large, and the adsorbent is not easy to handle; the crystallization extraction method has a large amount of solvent
Chemical methods include concentrated sulfuric acid decolorization method and saponification method; the concentrated sulfuric acid decolorization method needs to filter and remove carbon residue, and a large amount of hydrocarbon solvent is used; the decolorization effect of saponification method is not ideal

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of pale rosin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 1 kilogram of gum rosin and 10 grams of benzophenone into the reaction kettle respectively, adjust the pH to 6, raise the temperature to 90°C, keep it warm for 1 hour, and then vacuumize and distill until the color of the rosin is less than or equal to 6 Ghana colors No., cooling to obtain light-colored rosin. In this embodiment, the vacuum pressure is 20mmHg.

Embodiment 2

[0015] Add 10 kg of tall oil rosin and 0.5 kg of benzophenone into the reaction kettle respectively, adjust the pH to 7, raise the temperature to 85°C, keep it warm for 1.5 hours, and then vacuumize and distill until the color of the rosin is less than or equal to 6 Garner Color number, cooling, to get light-colored rosin. In this embodiment, the vacuum pressure is 25mmHg.

Embodiment 3

[0017] Add 50 kg of wood rosin and 3 kg of benzophenone into the reaction kettle respectively, adjust the pH to 6, raise the temperature to 80°C, keep it warm for 2 hours, and then vacuumize and distill until the color of the rosin is less than or equal to 6 Ghana colors No., cooling to obtain light-colored rosin. In this embodiment, the vacuum pressure is 20mmHg.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of pale rosin, which comprises the following steps: respectively adding rosin and diphenyl ketone into a reaction kettle, regulating the pH value to 6-7, heating to 80-90 DEG C, keeping the temperature for 1-2 hours, vacuumizing, distilling under reduced pressure until the chroma of the rosin is less than or equal to Gardner color 6, and cooling to obtain pale rosin, wherein the mass ratio of the rosin to the diphenyl ketone is 1:(0.01-0.05), the vacuumizing pressure is 20-25 mmHg, and the rosin is one or more of gum rosin, pamite and wood rosin. The rosin prepared by the method has the advantages of low chroma, high softening point and the like, and has wider application range.

Description

technical field [0001] The invention relates to the technical field of rosin processing, in particular to a preparation method of light-colored rosin. Background technique [0002] Rosin is a renewable natural resin, known as "the oil that grows on trees", and is one of the important forest chemical products. Rosin is widely used in coatings, adhesives, inks, papermaking, soap, metal processing, synthetic rubber, building materials, food, polymers, fine chemicals and other industries. The quality of rosin is mainly determined by its color, acid value, softening point, transparency, etc. In general, the lighter the color of rosin, the better the quality, the higher the grade, the wider the application range, and the higher the price. [0003] The methods for preparing light-colored rosin mainly include physical and chemical methods, and physical methods include adsorption decolorization and crystallization extraction. The effect of the adsorption decolorization method is no...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/02
Inventor 黄桂彬
Owner GUANGXI ZHONGCHANG RESIN