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Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof

A technology of chlorinated polypropylene and polyurethane prepolymers, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor adhesion, achieve improved adhesion, excellent adhesion of BOPP, and good spreading effect Effect

Active Publication Date: 2015-02-25
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane coating materials have poor adhesion to BOPP

Method used

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  • Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof
  • Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof
  • Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of water-based modified chlorinated polypropylene prepolymer: in parts by weight, 30 parts of chlorinated polypropylene (30% by mass percentage of chlorine) and 100 parts of xylene are dissolved in an agitator, condensed In the tube reactor, stir for 30 minutes, heat up to 110°C, add 1 part of hydroxyethyl methacrylate, 4 parts of acrylic acid, 2 parts of maleic anhydride, 4 parts of butyl acrylate, 1.5 parts of benzoyl peroxide, and react for 7 hours , to obtain a water-based modified chlorinated polypropylene prepolymer having a structure shown in formula (2);

[0035] (2) Preparation of polyurethane prepolymer: in parts by weight, add 40 parts of molecular weight 2000 and 6 parts of isophorone diisocyanate into a reactor equipped with a stirrer and a condenser tube, heat up to 75°C, add 0.006 parts of dibutyltin dilaurate, stirred and reacted for 2 hours; then added 45 parts of acetone, 0.1 parts of methyl hydroquinone, 1.5 parts of hydroxyethyl metha...

Embodiment 2

[0041] (1) Preparation of water-based modified chlorinated polypropylene prepolymer: in parts by weight, 30 parts of chlorinated polypropylene (30% by mass percentage of chlorine) and 90 parts of xylene are dissolved in an agitator, condensed In the tube reactor, stir for 30 minutes, heat up to 110°C, add 1.8 parts of hydroxyethyl acrylate, 4 parts of acrylic acid, 1.1 parts of maleic anhydride, 3.6 parts of isooctyl acrylate, 2.2 parts of benzoyl peroxide, and react for 6 hours. A water-based modified chlorinated polypropylene prepolymer having a structure shown in formula (2) is obtained;

[0042] (2) Preparation of polyurethane prepolymer: in parts by weight, add 40 parts of polytetrahydrofuran diol and 8 parts of isophorone diisocyanate with a molecular weight of 2000 in a reactor equipped with a stirrer and a condenser tube, and heat up to 80°C, add 0.01 parts of stannous octoate, stir for 2 hours, then add 36 parts of acetone, 0.03 parts of methyl hydroquinone, dropwise ad...

Embodiment 3

[0048] (1) Preparation of water-based modified chlorinated polypropylene prepolymer: by weight, 28 parts of chlorinated polypropylene (mass ratio of 20% by mass percent chlorine to 60% by mass chlorine by mass percent is 1:1) , 80 parts of xylene were dissolved in a reactor with a stirrer and a condenser, stirred for 30 minutes, heated to 95°C, added 3 parts of hydroxyethyl acrylate, 3 parts of methacrylic acid, 1.5 parts of maleic anhydride, lauryl acrylate 4 parts, 3 parts of benzoyl peroxide, react 6h, make the water-based modified chlorinated polypropylene prepolymer with structure shown in formula (2);

[0049] (2) Preparation of polyurethane prepolymer: in parts by weight, add 48 parts of polyoxypropylene glycol with a molecular weight of 1000 and 9.2 parts of toluene diisocyanate into a reactor equipped with a stirrer and a condenser tube, and heat up to 70°C , add 0.01 part of dibutyltin dilaurate, stir and react for 2h, then add 50 parts of acetone, 0.05 part of hydro...

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Abstract

The invention belongs to the field of polymer coating materials, and discloses a coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and a preparation and application thereof. By using the chlorinated polypropylene with similar structure to the BOPP as the framework polymer, the chlorinated polypropylene is subjected to hydrophile modification by acrylate monomer to introduce hydrophilic group and active group, and then is modified by the polyurethane. The coating polymer can be made into an environment-friendly water-based coating material which has excellent adhesive force on the BOPP. The coating material has the advantages of high surface energy and high binding force for BOPP, and the ink has favorable spreadability and binding effect on the coating material. The coating material contains the photocuring group, and can connect the coating polymer with the ink through the covalent bond in the printing process, thereby enhancing the binding force between the coating material and ink. The coating polymer can synchronously achieve the goals of enhancing the binding force between the coating and BOPP and the binding force between the coating and ink.

Description

technical field [0001] The invention belongs to the field of polymer coating materials, and in particular relates to a polyurethane photocuring modified water-based chlorinated polypropylene BOPP coating polymer and a preparation method and application thereof. Background technique [0002] People's production and life are inseparable from plastic packaging. At present, the most important packaging plastic film is biaxially oriented polypropylene film (BOPP). BOPP is non-polar, has low surface energy, and has low ink adhesion on the film, making it difficult to print. It is to apply a certain polymer solution with good adhesion to the ink and the substrate on the surface of the film to form a coating, and then apply ink on the coating for printing, which is to improve the bond between the BOPP film and the printing ink. An effective method of cohesion. [0003] The coating materials currently used for BOPP can be divided into solvent-based coating materials and water-based...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/48C08G18/12C08G18/62C08F110/06C08F8/46C08F8/26C09D175/08C09D175/16C08J7/04
CPCC08F8/26C08F8/46C08G18/12C08G18/4063C08G18/4825C08G18/4854C08G18/6204C08G18/672C08G18/755C08J7/0427C08J2323/12C08J2475/16C09D175/16C08G18/62C08F110/06
Inventor 刘伟区谭建权
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI