Low-toxicity and low-odor single-component acrylate pressure sensitive adhesive and preparation method thereof

A pressure-sensitive adhesive, acrylate technology, applied in the direction of adhesives, ester copolymer adhesives, film/sheet adhesives, etc., can solve the problem of insufficient production and implementation of external crosslinking agent technology, insufficient crosslinking reaction, Changes in the adhesive properties of products, etc., to achieve the effect of aspect adhesion, simple preparation method and good weather resistance

Inactive Publication Date: 2016-08-31
西安航天三沃化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are deficiencies in the production and implementation of the external cross-linking agent technology
One is that due to the contradiction between the cross-linking activity and the service life of the glue, many pressure-sensitive adhesives use two-component or multi-component, which is inconvenient to use
The second is that the cross-linking reaction is often not sufficient during the drying process, and the adhesive properties of the product will change greatly due to continued cross-linking during storage.

Method used

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  • Low-toxicity and low-odor single-component acrylate pressure sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A. Mix all the monomer raw materials, a part of the initiator and a part of the solvent evenly, and the composition is: isooctyl acrylate (2-EHA) 6.5%, butyl acrylate (BA) 13%, methyl acrylate (MA) 9.8%, methyl methacrylate (MMA) 2.2%, acrylic acid (AA) 0.65%, hydroxyethyl acrylate (HEA) 0.09%, acrylate-N,N-dimethylaminoethyl ester 1.24%, acetic acid Ethyl ester (Ea) 50%, methanol (Ma) 4%, azobisisobutyronitrile (AIBN) 0.01%.

[0020] B. In a 1000ml four-neck flask equipped with a stirring device, a reflux condenser and a dropping funnel, add one-third of the mixed solution prepared in A above, heat up to 78°C, and keep it warm for 15min to 30min. The remaining two-thirds of the mixed solution is slowly added dropwise to the flask for 1.5 hours, and after the heat preservation reaction for 1 hour, the remaining initiator and solvent are added. The composition is: azobisisobutyl Nitrile (AIBN) 0.002%, ethyl acetate (Ea) 8% and methanol (Ma) 8%, continue to keep warm for...

Embodiment 2

[0022] A. Mix all the monomer raw materials, a part of the initiator and a part of the solvent evenly, and the composition is: isooctyl acrylate (2-EHA) 6.5%, butyl acrylate (BA) 13%, methyl acrylate (MA) 9.8%, methyl methacrylate (MMA) 2.2%, acrylic acid (AA) 0.65%, hydroxyethyl acrylate (HEA) 0.09%, acrylate-N,N-dimethylaminoethyl 2.34%, acetic acid Ethyl ester (Ea) 50%, methanol (Ma) 4%, azobisisobutyronitrile (AIBN) 0.01%.

[0023] B. In a 1000ml four-neck flask equipped with a stirring device, a reflux condenser and a dropping funnel, add one-third of the mixed solution prepared in A above, heat up to 78°C, and keep it warm for 15min to 30min. The remaining two-thirds of the mixed solution is slowly added dropwise to the flask for 1.5 hours, and after the heat preservation reaction for 1 hour, the remaining initiator and solvent are added. The composition is: azobisisobutyl Nitrile (AIBN) 0.002%, ethyl acetate (Ea) 8% and methanol (Ma) 8%, continue to keep warm for 3-4h,...

Embodiment 3

[0025] A. Mix all the monomer raw materials, a part of the initiator and a part of the solvent evenly, and the composition is: isooctyl acrylate (2-EHA) 6.5%, butyl acrylate (BA) 13%, methyl acrylate (MA) 9.8%, methyl methacrylate (MMA) 2.2%, acrylic acid (AA) 0.65%, hydroxyethyl acrylate (HEA) 0.09%, acrylate-N,N-dimethylaminoethyl 2.34%, acetic acid Ethyl ester (Ea) 50%, methanol (Ma) 4%, azobisisobutyronitrile (AIBN) 0.01%.

[0026] B. In a 1000ml four-neck flask equipped with a stirring device, a reflux condenser and a dropping funnel, add one-third of the mixed solution prepared in A above, heat up to 78°C, and keep it warm for 15min to 30min. The remaining two-thirds of the mixed solution is slowly added dropwise to the flask for 1.5 hours, and after the heat preservation reaction for 1 hour, the remaining initiator and solvent are added. The composition is: azobisisobutyl Nitrile (AIBN) 0.002%, ethyl acetate (Ea) 8% and methanol (Ma) 8%, continue to keep warm for 3-4h,...

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Abstract

The invention provides a preparation method of a low-toxicity and low-odor single-component acrylate pressure sensitive adhesive. An acrylate adhesive is prepared first, main raw materials of the adhesive include 10-15% of butyl acrylate, 5-10% of 2-ethylhexyl acrylate, 10-15% of methyl acrylate, 2-5% of methyl methacrylate, 1-3% of functional monomer, 0-3% of specialty monomer, 50-70% of solvent and 0.05-0.15% of initiator, and a certain amount of curing agent and a certain amount of inhibitor are added after reaction ends. The acrylate pressure sensitive adhesive has the advantages of being high in stripping strength, high in stability and good in pigment / dye compatibility and can be used for the field of car window membranes and the like.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a preparation method of a low-toxicity and low-odor one-component acrylate pressure-sensitive adhesive, which is mainly used as an adhesive for automobile film and window film. Background technique [0002] Acrylic pressure-sensitive adhesives are copolymerized from acrylate monomers and other vinyl monomers. Compared with rubber-type pressure-sensitive adhesives, they have the following characteristics: simple formula, generally do not need to use softeners, anti-aging agents, etc. ; Wide bonding range, good bonding performance, good weather resistance, low or non-toxic. [0003] Solvent-based acrylate pressure-sensitive adhesives have many advantages such as low average molecular weight, good wettability, high initial adhesion, fast drying speed, and good water resistance. From the perspective of the glass window film structure, solvent-based acrylic pressure-sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/02C08F220/18C08F220/14C08F220/06C08F220/28C08F220/34
CPCC08F220/18C08F220/1804C09J7/22C09J7/38C09J133/08C09J2301/312C09J2423/106C09J2467/006C08F220/1808C08F220/14C08F220/06C08F220/281C08F220/34
Inventor 马荔高建宾薛晓春宁伟王莉娅谈珊珊
Owner 西安航天三沃化学有限公司
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