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Normal-temperature self-crosslinking type core-shell structure acrylate emulsion as well as preparation and application thereof

An acrylate and self-crosslinking technology, which is applied in the field of normal temperature self-crosslinking core-shell structure acrylate emulsion and its preparation and application, can solve the problems of high difficulty in process control and high production cost, and achieve small steric hindrance, High degree of copolymerization reaction and good compatibility

Active Publication Date: 2021-08-24
李星明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented technology is more difficult to control the process, and the preparation cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of a normal temperature self-crosslinking type core-shell structure acrylate emulsion of the present embodiment comprises the following preparation steps:

[0033] (1) Preparation of modified macromonomer: Add vinyl polyether monomer APEG-350 with a molar ratio of 1:3 and hydrogen-containing silane coupling agent trimethoxysilane into N,N dimethylformamide Stir and mix evenly, then add the organic tin catalyst DBTDL, heat up to 75-80°C and carry out dehydrogenation condensation reaction for 4 hours under the condition of slight negative pressure. Sexual macromonomer, the calculated yield was 62%. The resulting modified macromonomer structural formula can be expressed as CH 2 =CHCH 2 O(CH 2 CH 2 O) n-1 CH 2 CH 2 OSi(OCH 3 ) 3 .

[0034] (2) Preparation of the core layer monomer emulsion: by weight, add 20 parts of styrene (St), 60 parts of methyl methacrylate, 20 parts of methyl acrylate and 4 parts of the total monomer mass of the emulsi...

Embodiment 2

[0039] The preparation method of a normal temperature self-crosslinking type core-shell structure acrylate emulsion of the present embodiment comprises the following preparation steps:

[0040] (1) Preparation of modified macromonomer: Add vinyl polyether monomer APEG-500 with a molar ratio of 1:4 and hydrogen-containing silane coupling agent triethoxysilane to N,N dimethylformamide Stir and mix evenly in medium, then add organotin catalyst DBTDA, heat up to 75-80°C and carry out dehydrogenation condensation reaction for 4 hours under slight negative pressure conditions, after the reaction is completed, the solvent is removed in vacuum and the low boiling point raw materials are recovered to obtain a light yellow transparent liquid The modified macromonomer has a yield of 71% through detection and calculation.

[0041] (2) Preparation of core layer monomer emulsion: by weight, add 25 parts of styrene (St), 50 parts of ethyl methacrylate, 25 parts of ethyl acrylate and 4 parts ...

Embodiment 3

[0046] The preparation method of a normal temperature self-crosslinking type core-shell structure acrylate emulsion of the present embodiment comprises the following preparation steps:

[0047] (1) Preparation of modified macromonomer: Add vinyl polyether monomer APEG-2400 with a molar ratio of 1:2 and hydrogen-containing silane coupling agent trimethoxysilane into N,N dimethylformamide Stir and dissolve evenly, then add the organotin catalyst DBTDA, heat up to 75-80°C and carry out dehydrogenation condensation reaction for 4 hours under the condition of slight negative pressure. The macromonomer has a calculated yield of 53%.

[0048] (2) Preparation of core layer monomer emulsion: by weight, 25 parts of styrene (St), 50 parts of butyl methacrylate, 25 parts of butyl acrylate and emulsifier APEO of 4 parts of total monomer mass were added Stir and emulsify in 150 parts of deionized water to obtain the core layer monomer emulsion;

[0049] (3) Preparation of the shell layer ...

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Abstract

The invention belongs to the technical field of film printing materials, and discloses a normal-temperature self-crosslinking type core-shell structure acrylate emulsion as well as preparation and application thereof. The preparation method comprises the steps: carrying out dehydrogenation condensation reaction on a vinyl polyether monomer and a hydrogen-containing silane coupling agent to obtain a modified macromonomer; heating a core-layer monomer emulsion composed of styrene, methacrylate and acrylate to 55-85 DEG C, and then adding an initiator solution to carry out polymerization reaction to obtain a core-layer emulsion; and dropwise adding a shell monomer emulsion composed of methacrylate, acrylic acid and a modified macromonomer and an initiator solution, and continuously carrying out a polymerization reaction to obtain the normal-temperature self-crosslinking type core-shell structure acrylate emulsion. According to the invention, the modified macromonomer with the specific structure is used as a shell polymerization monomer, so that the product can be endowed with a normal-temperature cross-linking characteristic, the adhesive force is enhanced, the wettability is improved, and the water resistance is good. The emulsioncan be used for preparing water-based ink and water-based latex paint.

Description

technical field [0001] The invention belongs to the technical field of film printing materials, and in particular relates to a normal-temperature self-crosslinking core-shell structure acrylate emulsion and its preparation and application. Background technique [0002] Ink binder, also known as ink additive, is an important part of printing ink and the fluid part of ink. The rheology, viscosity, drying, film-forming and printing performance of printing ink mainly depend on the binder. The solid component in the ink can be finely ground in the manufacturing process by relying on the wetting effect of the binder, and the transfer and transfer of the printing process can be completed by its viscosity, and the fastness of the imprint to form a gloss on the printed matter depends on the dry film-forming property of the binder. ink film to protect the pigment. The quality of water-based ink mainly depends on the quality of its binder. At present, acrylic resin emulsion is widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F283/06C08F220/14C08F220/06C08F212/08C08F220/18C09D11/107C09D5/02C09D151/08C09D151/00
CPCC08F220/14C08F265/06C08F283/065C09D5/02C09D11/107C09D151/003C09D151/08C08F220/1802C08F220/1804C08F212/08C08F2500/26C08F220/06C08F220/1808
Inventor 李星明
Owner 李星明
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