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Synthesis process of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate and application of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate in interior wall latex paint

A technology of pentanediol dibutyrate and trimethyl, which is applied in the application field of interior wall latex paint, can solve the problems of not meeting the environmental protection release requirements of TVOC, affecting the fetus in the reproductive system, and harmful to aquatic organisms, so as to reduce the Effects of VOC, reduced film forming temperature, and simple reaction

Pending Publication Date: 2020-07-10
RUNTAI CHEM TAIXING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The odor-free coalescents used in traditional interior wall coatings mainly refer to hexadecyl diester (2,2,4-trimethyl-1,3-pentanediol-diisobutyrate), but the latest ECHA Hazard statement for 2,2,4-trimethyl-1,3-pentanediol-diisobutyrate (CAS No.: 6846-50-0) identified by the European Chemicals Agency: H361 Suspected of harmful effects on reproductive system or fetus Effects; H412 Harmful to aquatic life with long lasting effects
In addition, the boiling point of hexadecyl diester is 281 °C, which does not meet the environmental release requirements of TVOC
Therefore, hexadecyl diester will gradually become unsuitable for use as an interior wall coalescent

Method used

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  • Synthesis process of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate and application of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate in interior wall latex paint
  • Synthesis process of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate and application of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate in interior wall latex paint
  • Synthesis process of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate and application of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate in interior wall latex paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020]

[0021] In a 500mL three-necked flask equipped with a thermometer, agitator and a reflux condenser, 2,2,4-trimethyl-1,3-pentanediol and butyric acid were added to the three-necked flask in a ratio of 1:2 of the feeding substances, And at the same time add 0.3mol% catalyst NaHSO 4 ·H 2 O-NaH 2 PO 4 (Based on 2,2,4-trimethyl-1,3-pentanediol), and nitrogen protection was introduced, and then the reaction was carried out at 160 ° C for 8 h; the reaction was stopped, and the reaction solution was cooled to room temperature using a Buchner funnel. Suction filtration, the obtained filtrate was extracted through a separatory funnel, washed three times with saturated aqueous sodium hydroxide solution and deionized water, respectively, and the impurities were removed by rotary evaporation at 140 ° C and -0.1 MPa by a rotary evaporator, and finally 2 was obtained. ,2,4-Trimethyl-1,3-pentanediol dibutyrate, RTC-300 as a film-forming aid product, the product yield is 97%, se...

Embodiment 2

[0024] On the basis of Example 1, the catalyst was changed to NaHSO 4 ·H 2 O-KH 2 PO 4 , and the rest remain unchanged to obtain 2,2,4-trimethyl-1,3 pentanediol dibutyrate, which is a film-forming auxiliary product RTC-300, and the product yield is 95%.

[0025]On the basis of Example 1, the reaction at 160 °C for 8 h was replaced by the reaction at 170 °C for 5 h, and the rest remained unchanged to obtain 2,2,4-trimethyl-1,3-pentanediol dibutyrate, which was Film auxiliary product RTC-300, the product yield is 93%.

Embodiment 3

[0029] Water and bactericide are added to the high-speed disperser in turn, and dispersed at 600rpm for 5min; then add dispersant, defoamer, water retention agent, film-forming aid, and wetting agent in sequence, and continue to disperse at 600rpm for 5min; then add powder, fiber PH regulator, dispersed at 1500rpm for 60 minutes, stopped dispersion, added emulsion and thickener, dispersed at 1500rpm for 10 minutes, filtered to obtain the finished water-based interior wall paint, fineness ≤45μm.

[0030] The amount of each raw material is shown in Table 1, and the total amount is 1KG. The creativity of the present invention is to use it as a coating film-forming auxiliary, and other coating components are existing conventional products.

[0031] Table 1 Water-based interior wall paint formulation

[0032]

[0033]

[0034] Film-forming efficiency test (2,2,4-trimethyl-1,3-pentanediol-bisisobutyrate for RTC-16, 2,2,4-trimethyl-1,3-pentane for RTC-300 Diol-dibutyrate), sel...

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Abstract

The invention discloses a synthesis process of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate and application of 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate in interior wall latex paint. According to the method, 2, 2, 4-trimethyl-1, 3pentanediol and butyric acid are used as the raw materials for reaction in the presence of a catalyst to prepare 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate. According to the invention, 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate is used as a film-forming assistant to prepare paint for the first time, high film forming efficiency is achieved, the RTC-300 adding amount in a same formula can be reduced by 10% compared with RTC-16, and the boiling point of the 2, 2, 4-trimethyl-1, 3pentanediol dibutyrate is higher, therefore the environmental protection requirement of TVOC is met.

Description

technical field [0001] The invention belongs to the paint auxiliary technology, and specifically relates to a synthesis process of 2,2,4-trimethyl-1,3 pentanediol dibutyrate and its application in interior wall latex paint. Background technique [0002] With the continuous improvement of human living standards and the gradual improvement of housing standards, interior decoration has become one of the most concerned topics. The interior wall paint, as the most widely used decoration and decoration material, is also one of the main sources of indoor pollution, which has attracted people's attention. And as people's awareness of environmental protection and health is getting stronger and stronger, consumers are also more consciously buying some high-end, clean-odor, low-VOC or zero-VOC interior decoration coatings. However, usually zero VOC does not mean that there is no TVOC release, and even the TVOC release amount will be far greater than the minimum standard of indoor air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/28C09D7/63C09D5/02C09D201/00
CPCC07C67/08C09D7/63C09D5/024C09D201/00C08K2003/265C07C69/28C08K13/02C08K5/103C08K3/26
Inventor 卢小松宋文国张世元杨萍
Owner RUNTAI CHEM TAIXING CO LTD
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