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Sealant for anti-oil high-safety low-mobility metal bottle cap

A grease-resistant, low-migration technology, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of large migration, failure to meet food hygiene requirements, and non-compliance with food hygiene and safety regulations, etc. problems, to achieve good quality results

Active Publication Date: 2014-03-05
WUXI HUAPENG BOTTLE CAP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 93102095.6 uses tris(2-ethylhexyl) trimellitate (TOTM) and citric acid ester as a plasticizer, and Chinese patent 200410023896.1 uses bis(2-ethylhexyl) phthalate , tris(2-ethylhexyl) trimellitate (TOTM) and acetyl tributyl citrate (ATBC) are used together as plasticizers, and cyclohexane-1,2-dicarboxylic acid is used in Chinese patent 200710021637.9 Diisononyl ester (DINCH) is used together with LGFLEX EBN plasticizer from South Korea LG Chemical Co., Ltd. ) used together as a plasticizer, but the plasticizers involved in the above-mentioned patents have a very large amount of migration when they come into contact with oily foods after making sealants, which cannot meet the food hygiene requirements of European and American countries
[0003] Therefore, ordinary metal bottle cap sealant has a large amount of migration when filling oily food, which does not meet the food hygiene and safety regulations of European and American countries, and thus endangers the health of consumers. It is urgent to solve these problems

Method used

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  • Sealant for anti-oil high-safety low-mobility metal bottle cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First prepare polyester: weigh 30.0kg of adipic acid, 10.0kg of 1,2-propylene glycol, 5.0kg of 1,3-butanediol, and 21.0kg of 1,4-butanediol and put them into the reactor, then Add 0.01kg of triphenyl phosphite, and react for 4 hours under the condition of stirring and heating at a rate of 40 rpm at a temperature of 170°C. When the acid value is less than or equal to 1.0, vacuumize for 3 hours under the condition of 0.08MPa. polyester.

[0019] Raw material ratio: polyvinyl chloride paste resin 80.0kg, fatty acid acetyl mono- and diglyceride 35.0kg, polyester 40.0kg, heavy calcium carbonate 5.0kg, zinc stearate 4.0kg, pigment white 2.0kg, (Z)- 9-octadecenoic acid amide 1.0kg.

[0020] Preparation process: Weigh the raw materials according to the above proportions for later use; first take fatty acid acetyl mono- and diglycerides and polyester, add zinc stearate and pigment white, stir with a high-speed vacuum mixer at 500 rpm for 2 hours, and vacuumize at the same time ...

Embodiment 2

[0027] First prepare polyester: weigh 30.0kg of adipic acid, 10.0kg of 1,2-propylene glycol, 5.0kg of 1,3-butanediol, and 21.0kg of 1,4-butanediol and put them into the reactor, then Add 0.01kg of triphenyl phosphite, and react for 5 hours under stirring and heating conditions at a rate of 50 rpm at a temperature of 155°C. When the acid value is ≤ 1.0, vacuumize for 3 hours under the condition of 0.09MPa. polyester.

[0028] Raw material ratio: polyvinyl chloride paste resin 90.0kg, fatty acid acetyl mono- and diglyceride 55.0kg, polyester 20.0kg, heavy calcium carbonate 6.0kg, zinc stearate 3.5kg, pigment white 1.0kg, (Z)- 9-octadecenoic acid amide 1.0kg.

[0029] Preparation process: Weigh the raw materials according to the above proportions for later use; first take fatty acid acetyl mono- and diglycerides and polyester, add zinc stearate and pigment white, stir with a high-speed vacuum mixer at 300 rpm for 3 hours, and vacuumize at the same time (The vacuum value is not ...

Embodiment 3

[0036] First prepare polyester: weigh 30.0kg of adipic acid, 10.0kg of 1,2-propylene glycol, 5.0kg of 1,3-butanediol, and 21.0kg of 1,4-butanediol and put them into the reactor, then Add 0.01kg of triphenyl phosphite, and react for 3 hours under the condition of stirring and heating at a rate of 30 rpm at a temperature of 185°C. When the acid value is ≤ 1.0, vacuumize for 2 hours under the condition of 0.08MPa. polyester.

[0037] Raw material ratio: polyvinyl chloride paste resin 105.0kg, fatty acid acetyl mono- and diglycerides 50.0kg, polyester 35.0kg, heavy calcium carbonate 5.0kg, zinc stearate 2.0kg, pigment white 3.0kg, (Z)- 9-octadecenoic acid amide 3.0kg.

[0038] Preparation process: Weigh the raw materials according to the above proportions for later use; first take fatty acid acetyl mono- and diglycerides and polyester, add zinc stearate and pigment white, stir with a high-speed vacuum mixer at 800 rpm for 1 hour, and vacuumize at the same time (The vacuum value ...

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Abstract

The invention provides a sealant for an anti-oil high-safety low-mobility metal bottle cap. The sealant is prepared through the following steps: (1) mixing 25-55 parts by weight of fattyacid acetylated mono and di-glycerides with 20-40 parts by weight of polyester, adding 2-8 parts by weight of zincstearate, 1-3 parts by weight of pigment white, and stirring in vacuum; (2) adding 0-10 parts by weight of heavy calcium carbonate and 1-5 parts by weight of (Z)-9-octadecenoic amide and stirring; (3) adding 80-115 parts by weight of polyvinyl chloride paste resin powder and stirring under the condition that the temperature is not higher than 45 DEG C; and (4) stirring in vacuum, and filtering to form a plastisol. The metal bottle cap sealant provided by the invention has excellent mobility in contact with oily foods; after the proportions of the raw materials are optimized, the sealant is capable of satisfying the latest laws and rules of food sanitation and safety of European and American developed countries; and therefore, safe and reliable fish meat type oily can foods are provided for consumers.

Description

technical field [0001] The invention relates to a sealing material for the metal packaging industry, in particular to a formula and a manufacturing process of a bottle cap sealant for oily canned food in metal glass bottles. Background technique [0002] With the development of economy and society, people pay more and more attention to food safety. As a material in direct contact with food, metal bottle caps have become one of the prominent technical barriers to trade in commodity circulation around the world. Usually, the part of the metal bottle cap in contact with food is the inner surface coating and sealant. The former has relatively mature technology at home and abroad, and can well control the amount of migration into oily foods; but the latter is limited by the lag in the development of chemical material synthesis technology. Metal bottle cap sealants suitable for filling fatty foods have not yet been developed. Chinese patent 93102095.6 uses tris(2-ethylhexyl) tri...

Claims

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Application Information

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IPC IPC(8): C09J127/06C09J11/08C09J11/06C09J11/04C08G63/16C09K3/10
Inventor 秦简许迪兴
Owner WUXI HUAPENG BOTTLE CAP