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Fluorubber oil-resistant metal bottle cap sealant and preparation method thereof

A technology of fluorine rubber and oil resistance, which is applied in the field of fluorine rubber oil-resistant metal bottle cap sealant and its preparation. It can solve the problems of not meeting food hygiene requirements, migration of sealant components, and affecting food quality, so as to improve hydrophobicity. As well as the effects of flexibility, improved stability, and improved oil and stain resistance

Active Publication Date: 2018-11-16
JIANGSU JINHOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bottle cap sealant is indispensable in the sealing of various bottled products. With the development of science and technology, the requirements for bottle cap sealant are getting higher and higher all over the world. Not only good sealing performance is required, but also food and The environment is non-polluting. Because the bottle cap sealant will inevitably come into contact with food, there will be sealant components migrating into the food, which will affect the quality of the food and damage human health.
[0003] CN1091443A discloses the use of trimellitic acid tris (2-ethylhexyl) ester (TOTM) and citrate as a plasticizer, and CN1696189A discloses the use of phthalate bis (2-ethylhexyl) ester, partial Tris(2-ethylhexyl) trimellitate (TOTM) and acetyl tributyl citrate (ATBC) cooperate to use as plasticizer, CN101338171A discloses adopting dioctyl terephthalate (DOTP), acetyl citrate Tributyl ester (ATBC) is used together as a plasticizer, but after the plasticizer involved in the above patent is made into a sealant, the amount of migration is very large when it comes into contact with oily food, which cannot meet the food hygiene requirements of European and American countries

Method used

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  • Fluorubber oil-resistant metal bottle cap sealant and preparation method thereof
  • Fluorubber oil-resistant metal bottle cap sealant and preparation method thereof
  • Fluorubber oil-resistant metal bottle cap sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the provided raw materials for preparing the fluororubber oil-resistant metal bottle cap sealant include the following components by weight:

[0049]

[0050] The structure of the hyperbranched polysiloxane is as follows:

[0051] Where R is -CH 2 CH 2 -, n is 4.

[0052] The polyalkoxysilane coupling agent is a hexaalkoxysilane coupling agent, and the antioxidant is antioxidant 1010.

[0053] The preparation method of the fluorine rubber oil-resistant metal bottle cap sealant specifically includes the following steps:

[0054] (1) Combine a part (30 parts by weight) of fluorine rubber with fluorinated modified acrylic resin, maleimide modified phenolic resin, dimethyl silicone oil, and part (3 parts by weight) of polyalkoxysilane coupling agent well mixed;

[0055] (2) Mix the remaining polyalkoxysilane coupling agent with calcium carbonate, nano-silica, nano-silver and antioxidants, and stir for 1 hour under vacuum conditions (vacuum degree of -0.4Mpa) to o...

Embodiment 2

[0059] In this embodiment, the provided raw materials for preparing the fluororubber oil-resistant metal bottle cap sealant include the following components by weight:

[0060]

[0061] The structure of the hyperbranched polysiloxane is as follows:

[0062] Where R is -CH 2 CH 2 CH 2 -, n is 3.

[0063] The polyalkoxysilane coupling agent is a hexaalkoxysilane coupling agent, and the antioxidant is antioxidant 1010.

[0064] The preparation method of the fluorine rubber oil-resistant metal bottle cap sealant specifically includes the following steps:

[0065] (1) Combine a part (30 parts by weight) of fluorine rubber with fluorinated modified acrylic resin, maleimide modified phenolic resin, dimethyl silicone oil, and part (3 parts by weight) of polyalkoxysilane coupling agent well mixed;

[0066] (2) Mix the remaining polyalkoxysilane coupling agent with calcium carbonate, nano-silica, nano-silver and antioxidants, and stir for 2.5 hours under vacuum conditions (vacuum degree -0.6Mpa)...

Embodiment 3

[0070] In this embodiment, the provided raw materials for preparing the fluororubber oil-resistant metal bottle cap sealant include the following components by weight:

[0071]

[0072] The structure of the hyperbranched polysiloxane is as follows:

[0073] Where R is -CH 2 CH 2 -, n is 6.

[0074] The polyalkoxysilane coupling agent is a hexaalkoxysilane coupling agent, and the antioxidant is antioxidant 1010.

[0075] The preparation method of the fluorine rubber oil-resistant metal bottle cap sealant specifically includes the following steps:

[0076] (1) Combine a part (30 parts by weight) of fluorine rubber with fluorinated modified acrylic resin, maleimide modified phenolic resin, dimethyl silicone oil, and part (5 parts by weight) of polyalkoxysilane coupling agent well mixed;

[0077] (2) Mix the remaining polyalkoxysilane coupling agent with calcium carbonate, nano-silica, nano-silver and antioxidants, and stir for 3 hours under vacuum conditions (vacuum degree -0.5Mpa) to obt...

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Abstract

The invention provides a fluorubber oil-resistant metal bottle cap sealant and a preparation method thereof. The fluorubber oil-resistant metal bottle cap sealant comprises the following raw materialsin parts by weight: 50-70 parts of fluorubber, 10-20 parts of fluorinated modified acrylic resin, 10-20 parts of maleimide modified phenolic resin, 5-10 parts of hyper-branched polysiloxane, 5-10 parts of a polyalkoxy silane coupling agent, 3-5 parts of dimethicone, 1-5 parts of calcium carbonate, 1-3 parts of nano silica, 3-5 parts of nano silver, and 1-3 parts of an anti-oxidant. The fluorubberoil-resistant metal bottle cap sealant has the advantages of good temperature toleration, oil stain resistance, hydrolysis resistance, and good stability, and has low mobility while contacting with food, which can satisfy the food hygiene requirements by European and American countries.

Description

Technical field [0001] The invention relates to the technical field of sealing materials for packaging, and relates to a fluorine rubber type oil-resistant metal bottle cap sealant and a preparation method thereof. Background technique [0002] Bottle cap sealant is indispensable for the sealing of various bottled products. With the development of science and technology, the world's requirements for bottle cap sealants are getting higher and higher. Not only are they required to have good sealability, but also require food and The environment is pollution-free. As the bottle cap sealant will inevitably come into contact with food, the components of the sealant will migrate into the food, which will affect the quality of the food and harm human health. [0003] CN1091443A discloses the use of tris(2-ethylhexyl) trimellitate (TOTM) and citric acid ester as a plasticizer, and CN1696189A discloses the use of bis(2-ethylhexyl) phthalate, partial Tris (2-ethylhexyl) trimellitate (TOTM) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J127/12C09J133/04C09J161/14C09J183/04C09J11/04C09J11/06
CPCC08K2003/0806C08K2003/265C08K2201/011C08L2201/08C08L2205/035C09J11/04C09J11/06C09J127/12C08L33/04C08L61/14C08L83/04C08K13/02C08K3/26C08K3/36C08K3/08C08K5/5415
Inventor 王衍萍魏朝升朱琳王家玟蔡丽雪王晖
Owner JIANGSU JINHOU NEW MATERIAL TECH CO LTD
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