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175results about How to "Color unchanged" patented technology

White leather tanning agent and production method thereof

The invention discloses a chromium-free tanning agent in the tanning industry and a synthetic production process thereof; the formula (weight ratio) comprises: 60-150 parts of amide containing hydroxymethyl, 30-100 parts of aliphatic aldehydes, and 1-5 parts of anti-yellowing agent. The production method comprises the following steps: in the first step, 60-150 parts of amide containing hydroxymethyl are added into a reaction kettle with a stirring function, a thermometer, a reflux condenser and a vacuum distillation unit; in the second step, temperature is raised to 30 to 40 DEG C; in the third step, 30-100 parts of aliphatic aldehydes are dripped; in the fourth step, 1-5 parts of anti-yellowing agent are added with 2-4 hours of heat insulation; and in the fifth step, decompression distillation is carried out for 4-6h at the temperature of 50-90 DEG C and the pressure of -0.3bar-0.95bar for removing the water. The third step and the fourth step can be exchanged. The invention solves the color changing problem in the production and storage processes of the products, adds a small amount of anti-yellowing material alkali metal and the borate solution of alkaline earth metal, greatly improves the storage conditions of the 'oxazolidine' type tanning agent, and prolongs the quality guaranteeing time; as the anti-yellowing material has low price, is easy for acquisition, and has small adding amount, the invention does not affect the application characteristics of the products and can be widely promoted.
Owner:德瑞(常州)特种材料有限公司

Intelligent red date drying equipment

The invention relates to intelligent red date drying equipment; an air guide platform is fixedly arranged at the inner upper part of an oven; a quartz heating rod and a circulating fan group are arranged on the air guide platform; a plurality of layers of red date pans are arranged at the lower part of the air guide platform; a temperature and humidity sensor and an electric water makeup device are arranged on the rear left side of the inner top of the oven; a temperature and humidity transmission and transformation device is arranged on the rear left side of the outer top of the oven; an electric skylight is arranged on the left side of the top surface of the oven, and a micro processing controller is arranged in the middle of the outer top of the oven; twenty-one types of system software for controlling a red date baking process channel are arranged in the micro processing controller; and an MAX232 standard communication serial port is arranged at the bottom of the micro processing controller, and four control operation buttons and eight display lamps with different functions are arranged on a front panel of the micro processing controller. The equipment is convenient to operate, can control the temperature and discharge the humidity fully automatically and intelligently, so that time and labor are saved, the quality of manufactured products is high, and the color and the nutritional ingredients remain unchanged.
Owner:王路明

Sugar orange planting method and method for preventing the freshness of the sugar orange with leaves in refrigerators

The present invention relates to the technology of fruit plant and freshness prevention, in particular to a sugar orange planting method and a method for preventing the freshness of the sugar orange with leaves in refrigerators. The sugar orange planting method is that: accelerant is splashed at once in sugar orange anthesis; inhibitors are splashed in a small fruit period; calcium and potash fertilizers are importantly supplemented in a middle fruit period; organic fertilizers are used in a maturation period. When sugar oranges are picked, two to three leaves of every sugar fruit are reserved. After the sugar oranges are graded, freshness prevention agents are used for marinating, and cytokinin and calcium chloride are added in the solution of the freshness prevention agents. The method for preventing the freshness of the sugar orange with leaves in refrigerators is that: potassium permanganate is put into the refrigerators as reducing agents; sodium hydroxide is put into the refrigerators as sorbents; and constant temperature is controlled at 4 DEG C to 5 DEG C, and humidity is 90 to 95% by applying an air-adjusting type. The freshness prevention period of the present invention is long for 120 to 150 days, and the shelf time is long for 15 days. Fruit leaves are green, and are not easy to fall off. The rotten fruit rate is low, and is only 3 to 5%. However, the hardness, color and local flavor of the sugar oranges are not changed, and the sugar oranges are favorable to transport in a long way and stagger peak sale busy seasons. The present invention is suitable for planting peasants and farms in sugar orange production places, and takes a firm foundation for the north transportation and export of the sugar oranges in a large scale.
Owner:白志荣

Pickling method of helianthus tuberosus

InactiveCN105707784AUnique tasteSpecial crispy sweetFood ingredient functionsNitriteHot peppers
The invention discloses a pickling method of helianthus tuberosus. The pickling method comprises the following steps of adding water to siraitia grosvenorii and lotus leaves, and performing boiling so as to obtain a soup base; then putting fresh helianthus tuberosus into the soup base, soaking the fresh helianthus tuberosus in the soup base, and performing draining; uniformly mixing the processed helianthus tuberosus with hot peppers, Chinese prickly ash and rose sirup, adding rice wine, and performing stirring so as to obtain a mixture; and leaving the mixture to stand, placing the mixture after standing into a clay jar which is dry and clean, spreading a layer of vegetable leaves on mixed materials, spreading and stuffing Pu'er tea between the vegetable leaves and an opening of the clay jar, and performing natural fermentation for several months so as to obtain finished products. The pickled helianthus tuberosus is delicious and unique in mouth feel, has special crispness, sweetness, hot taste and mellow fragrance of the Pu'er tea, and can stimulate appetite, promote gastric secretion, help digestion and remove heat to cool blood. All the raw materials are effectively matched, so that the pickled helianthus tuberosus is easier to be tasty and attractive in color and maintains certain crispness. Through detection, when the clay jar is opened and the pickled helianthus tuberosus is eaten, the pickled helianthus tuberosus does not contain nitrite, after the clay jar is opened, the guarantee period of the pickled helianthus tuberosus is as long as 1 year, besides, during the guaranteed period, the nitrite is not generated, and the pickled helianthus tuberosus is free from mildew, stable in flavor, unchanged in color and lasting in crispness.
Owner:ZHENYUAN SONGZIDI GREEN FOOD CO LTD
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