摘要:
The instant invention relates to a method for purifying a rosin-containing material from sulfur compounds. In particular the method comprises a) contacting a rosin-containing material comprising rosin and sulfur compounds with an oxidizing agent at a temperature from 0 to 60° C. for 10 minutes to 3 hours, to oxidize at least part of the sulfur compounds; and b) separating the rosin from the oxidized sulfur compounds; to obtain a purified rosin-containing material. The invention also relates to the purified rosin-containing materials, the preparation of products derived therefrom and the use of the purified rosin-containing materials and derived products.
摘要:
The present invention generally relates to resins and uses thereof in composite materials and products. The present invention also relates to extraction processes for obtaining resins from plants and plant materials. The invention also relates to resin extracts obtained from a plant of the genus Triodia, commonly known as Spinifex, processes for obtaining resins, modified resins and composite products incorporating resins.
摘要:
A method and apparatus for insoluble reduction in tallow using water and a polisher. The system for insoluble reduction in tallow includes a tallow tank, a mixer, and a separator. The tallow is pumped into and held in the tallow tank. The tallow is mixed with water to form a tallow and water mixture. The tallow and water mixture is run through a separator where insolubles and cleaned tallow are separated.
摘要:
A method for manufacturing light-colored purified tall oil rosin includes a distillation process of distilling unpurified tall oil rosin in a presence of activated carbon. A method for manufacturing a tall oil rosin ester includes a rosin production process of producing light-colored purified tall oil rosin by this method for manufacturing, an esterification process of carrying out an esterification reaction of the purified tall oil rosin obtained in the rosin production process and alcohols, and an antioxidant-addition-process of adding at least one antioxidant selected from a sulfur-based organic compound, a thiophosphite-based organic compound and a phosphorus-based antioxidant during or after the esterification process.
摘要:
Provided herein are methods of making rosin esters. The methods can involve contacting a rosin ester with a microporous adsorbent. Treatment with a microporous adsorbent, such as an activated carbon, can improve the color of the rosin ester (e.g., reduce the neat Gardner color of the rosin ester by at least 1 Gardner color unit), reduce the concentration of sulfur in the rosin ester (e.g., reduce the concentration of sulfur in the rosin ester by at least 50 ppm), or combinations thereof. Rosin esters prepared by the methods described herein, as well as methods of using thereof, are also described.
摘要:
A method for producing de-colored shellac by dissolving colored shellac in an aqueous solution comprising an alkaline agent; contacting the colored shellac in the aqueous solution with a sufficient amount of a chlorite salt to achieve de-coloration of the shellac; precipitating the de-colored shellac by neutralizing the aqueous solution with an acid; and recovering the precipitated de-colored shellac from said aqueous solution. The de-colored shellac produced is non-toxic and suitable for human use. Dental compositions comprising the de-colored shellac are disclosed, as well as uses of the de-colored shellac as a food product coating, a nail polish or varnish, and a wood varnish.
摘要:
A method for producing de-colored shellac by dissolving colored shellac in an aqueous solution comprising an alkaline agent; contacting the colored shellac in the aqueous solution with a sufficient amount of a chlorite salt to achieve de-coloration of the shellac; precipitating the de-colored shellac by neutralizing the aqueous solution with an acid; and recovering the precipitated de-colored shellac from said aqueous solution. The de-colored shellac produced is non-toxic and suitable for human use. Dental compositions comprising the de-colored shellac are disclosed, as well as uses of the de-colored shellac as a food product coating, a nail polish or varnish, and a wood varnish.