A preparation method of modified polyester and its application in polyester film for dry film resist

A technology for modifying polyester and polyester film, which is applied in the field of polyester modification to achieve the effects of excellent antistatic properties, good mechanical strength and excellent antistatic properties

Active Publication Date: 2022-03-29
WEIFANG FUWEI PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modification of polyester in this patent focuses on the improvement of surface properties. The improvement of other properties still relies on the addition of additives or the coating of functional coatings on the surface, which has not fundamentally obtained the mechanical, optical and processability properties. Excellent modified polyester resin film

Method used

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  • A preparation method of modified polyester and its application in polyester film for dry film resist
  • A preparation method of modified polyester and its application in polyester film for dry film resist

Examples

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Effect test

Embodiment 1

[0048] Example 1: A preparation method of modified polyester and its application in polyester film for dry film resist

[0049] Include the following steps:

[0050] 1. Preparation of polyester modified nano silica

[0051] Add 90 kg of titanate coupling agent ZJ-38S to 1000 kg of silica sol, stir at 18,000 rpm at high speed, heat to 55°C and react at a constant temperature for 2.5 hours. Wash with water and ethanol for 3 times, vacuum dry at 50°C and grind into 700-mesh white powder, slowly add 900 kg of white powder to 1620 kg of phenoxyethanol at a stirring rate of 23,000 rpm, stir for 40 minutes to disperse the powder evenly, and then Add 630 kg of hydroxyl-terminated hyperbranched polyester and 333 kg of p-toluenesulfonic acid, heat up to 110°C and react at a constant temperature for 1.2 hours. After the reaction is completed, high-speed centrifugation separates and obtains a white precipitate. After washing with water for 3 times, vacuum-dry at 80°C for 2 hours to obtai...

Embodiment 2

[0058] Example 2: A preparation method of modified polyester and its application in polyester film for dry film resist

[0059] Include the following steps:

[0060] 1. Preparation of polyester modified nano silica

[0061] Add 70 kg of titanate coupling agent ZJ-38S to 1000 kg of silica sol, stir at 15,000 rpm at high speed, heat to 50°C for 2 hours at a constant temperature and react for 2 hours. Wash with water and ethanol for 3 times, vacuum dry at 50°C and grind into 600-mesh white powder, slowly add 900 kg of white powder to 1440 kg of phenoxyethanol at a stirring rate of 20,000 rpm, stir for 30 minutes to disperse the powder evenly, and then Add 540 kg of hydroxyl-terminated hyperbranched polyester and 270 kg of p-toluenesulfonic acid, raise the temperature to 100°C and react at a constant temperature for 1 hour. After the reaction is completed, high-speed centrifugation separates and obtains a white precipitate. After washing 3 times with water, vacuum-dry at 80°C for...

Embodiment 3

[0068] Example 3: A preparation method of modified polyester and its application in polyester film for dry film resist

[0069] Include the following steps:

[0070] 1. Preparation of polyester modified nano silica

[0071] Add 110 kg of titanate coupling agent ZJ-38S to 1,000 kg of silica sol, stir at 20,000 rpm at high speed, heat to 65°C for 3 hours, and react at a constant temperature for 3 hours. Wash with water and ethanol for 3 times, vacuum dry at 50°C, and grind into 800-mesh white powder. Slowly add 900 kg of white powder to 1,800 kg of phenoxyethanol at a stirring rate of 25,000 rpm, stir for 45 minutes to disperse the powder evenly, and then Add 720 kg of hydroxyl-terminated hyperbranched polyester and 405 kg of p-toluenesulfonic acid, heat up to 120°C and react at a constant temperature for 1.5 hours. After the reaction is completed, high-speed centrifugation separates and obtains a white precipitate. After washing 3 times with water, dry at 80°C for 2 hours to o...

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Abstract

The invention provides a preparation method of modified polyester and its application in polyester film for dry film resist, including the preparation of polyester modified nano silicon dioxide, the preparation and modification of polyester prepolymer Preparation of PET resin chips. Silica powder obtained by reacting titanate coupling agent ZJ-38S in silica sol reacts with phenoxyethanol, hydroxyl-terminated hyperbranched polyester, and p-toluenesulfonic acid to obtain polyester-modified nano-silica; dibutyl Oleic acid amide, hexamethylphosphoric triamide, trimethylolpropane, ethylene glycol, isophorone diisocyanate, butanone oxime, ethylene glycol monoethyl ether solvent and catalyst zinc octanoate react to obtain polyester prepolymer ; Terephthalic acid, ethylene glycol, polyester-modified nano-silica and polyester prepolymers undergo conventional esterification and dehydration reactions to obtain modified polyester chips. The mechanical and optical properties of the modified resin prepared by the invention can meet the application requirements of the polyester film used as a dry film resist.

Description

technical field [0001] The invention relates to a preparation method of modified polyester and its application in polyester film for dry film resist, belonging to the technical field of polyester modification. Background technique [0002] Dry film resist, referred to as dry film (Dry Film), is mainly used in the manufacture of circuit boards (PCB) in the electronics industry. The dry film is composed of three layers: a polyester film as a supporting film, a photoresist layer (photoresist), and a protective film. When using a dry film in the circuit board manufacturing process, the protective film of the dry film is removed first, and the exposed The photoresist layer is closely attached to the conductive substrate, and then the surface of the polyester film on the other side of the photoresist layer is closely attached to a glass plate or film (called a photomask) printed with a circuit. When exposing, the light first Through the transparent part printed on the photomask, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L75/04C08K9/04C08K3/36B32B27/36B32B27/18B32B27/06
CPCC08L67/02B32B27/36B32B27/18B32B27/08B32B2307/412B32B2307/746B32B2307/21B32B2307/54B32B2307/51C08K2201/011C08L2201/04C08L75/04C08K9/04C08K9/08C08K3/36
Inventor 叶世强王国明于涛周慧芝
Owner WEIFANG FUWEI PLASTIC
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