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A kind of fluorine-containing copolymer for paper waterproof and oil-proof and its dispersion liquid preparation method

A waterproof and oil-proof, copolymer technology, which is applied in papermaking, water repellent addition, textiles and papermaking, etc. It can solve the problems of poor retention of copolymers and achieve good effect, good dispersion stability and good compatibility Effect

Active Publication Date: 2019-03-08
QUZHOU FLUORIDE & SILICON RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the introduction of anionic groups into the copolymer, it also maintains high performance when used with cationic paper wet strength agents or cationic surface sizing agents, but the water and oil repellency still needs to be further improved; and due to the anionic characteristics , resulting in poor retention of the copolymer when added to the paddle, and further improvement in heat oil resistance

Method used

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  • A kind of fluorine-containing copolymer for paper waterproof and oil-proof and its dispersion liquid preparation method
  • A kind of fluorine-containing copolymer for paper waterproof and oil-proof and its dispersion liquid preparation method
  • A kind of fluorine-containing copolymer for paper waterproof and oil-proof and its dispersion liquid preparation method

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0062] Synthesis example 1 (CH 2 =CHCOOCH 2 CF(CF 3 )[OCF 2 CF(CF 3 )] p OCF 2 CF 2 CF 3 Synthesis, p represents the number of repeating units, and the average value of p is 4)

[0063] Add 961g (1mol) of HOCH to a 1L four-necked reaction flask equipped with a stirrer, a constant temperature oil bath, a thermometer and a condenser 2 CF(CF 3 )[OCF 2 CF(CF 3 )] p OCF 2 CF 2 CF 3 (P average is 4) (purchased from Juhua Group), 79.5g (1.1mol) of CH 2 =CHCOOH (purchased from Suzhou Guanhui Chemical Co., Ltd.), an appropriate amount of water-carrying agent, a small amount of hydroquinone polymerization inhibitor and a small amount of p-toluenesulfonic acid catalyst, heated to 120 ° C for esterification under stirring, and transferred to the water separator When the water in the solution is close to the theoretical value, the esterification reaction is complete. Then, the water-carrying agent and unreacted methacrylic acid are removed by atmospheric distillation and v...

Synthetic example 2

[0064] Synthesis example 2 (CH 2 =C(CH 3 ) COOCH 2 CF(CF 3 )[OCF 2 CF(CF 3 )] p OCF 2 CF 2 CF 3 Synthesis, p represents the number of repeating units, and the average value of p is 10)

[0065] Add 2257g (1mol) of HOCH in a 1L four-necked reaction flask equipped with a stirrer, a constant temperature oil bath, a thermometer and a condenser 2 CF(CF 3 )[OCF 2 CF(CF 3 )] p OCF 2 CF 2 CF 3 (P average is 10) (purchased from Juhua Group), 95g (1.1mol) of CH 2 =C(CH 3 )COOH (purchased from Suzhou Guanhui Chemical Co., Ltd.), an appropriate amount of water-carrying agent, a small amount of hydroquinone polymerization inhibitor and a small amount of p-toluenesulfonic acid catalyst, heated up to 120 ° C for esterification under stirring, and transferred to the water separator When the water in the solution is close to the theoretical value, the esterification reaction is complete. Then, the water-carrying agent and unreacted methacrylic acid are removed by atmospheric...

Embodiment 1

[0067] 80 parts by mass of fluorine-containing single CH 2 =CHCOOCH 2 CH 2 CF 2 CF 2 CF 2 CF 2 CF 2 CF 3 , 13 parts by mass CH 2 =C(CH 3 ) COOCH 2 CH 2 N(CH 3 ) 2 (purchased from Shanghai Kangtuo Chemical Co., Ltd.), 7 parts by mass of CH 2 =C(CH 3 ) COOCH 2 CH 2 Add OH, 100 parts by mass of isopropanol, and 1 part by mass of azobisisobutyronitrile into a reactor equipped with a stirrer, a thermometer, and a condenser tube. After purging oxygen with nitrogen, stir and raise the temperature to 70° C., and keep the temperature for 12 hours. After that, 2.6 parts by mass of N-chloroethyl-2-imidazolidinone (purchased from Shanghai Fude Chemical Co., Ltd.) was added, and the reaction was continued for 2 hours. Then add 3.6 mass fractions of acetic acid and 430 mass parts of water, and distill off isopropanol by heating under reduced pressure.

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Abstract

The invention discloses a fluorine-containing copolymer for waterproofing and oilproofing paper and a preparation method thereof, and belongs to the technical field of paper waterproofing and oilproofing agents. The fluorine-containing copolymer for waterproof and oil-proof paper includes 60-90 parts of fluorine-containing monomers, 3-30 parts of amino monomers, 0.5-20 parts of hydroxyl monomers, 0-10 parts of other monomers, and initiators in parts by weight. 0.1-2 parts, 0-2.5 parts of chain transfer agent, 0.1-15 parts of N-chloroethyl-2-imidazolidinone and 0-9 parts of protonic acid. The fluorine-containing copolymer for waterproof and oil-proof paper of the present invention has excellent waterproof and oil-proof effect; the compatibility between the copolymer and cationic paper additives is good, and the waterproof and oil-proof effect can be well maintained when used together; in addition, its water-resistant and oil-proof Excellent thermal oil performance.

Description

technical field [0001] The invention relates to the technical field of paper waterproof and oil-proof treatment, in particular to a preparation method of a fluorine-containing copolymer for paper waterproof and oil-proof and a dispersion thereof. Background technique [0002] Paper products are widely used in the fields of catering, food packaging and other packaging materials. Since they are in contact with food containing oil, fat or sweat, an impermeable barrier layer is required. However, the use of polymers such as polyethylene as a barrier layer for paper products not only greatly increases the cost of the product, but also makes such paper products difficult to recycle. Adding a very small amount of fluorine-containing copolymer products in the process of papermaking or paper surface sizing can endow the paper substrate with water, oil and grease resistance, and it does not affect the recycling of paper products. [0003] The patent US915152 applied by DuPont on June...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/22C08F220/34C08F220/28C08F212/08C08F220/18D21H21/14D21H21/16
CPCD21H21/14D21H21/16C08F220/22C08F220/28C08F220/285C08F220/34C08F220/286C08F220/1804C08F220/281C08F212/08
Inventor 裴金东袁大想李建王树华曹毅
Owner QUZHOU FLUORIDE & SILICON RES INST
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