Unlock instant, AI-driven research and patent intelligence for your innovation.

Modified solvent-free polyester resin and primer containing same

A polyester resin, solvent-free technology, applied in the field of modified solvent-free polyester resin and primers containing the resin, can solve the problems of high resin odor, inconvenient application, strong toxicity and the like

Pending Publication Date: 2021-09-14
JIANGSU HUALUN CHEM +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used unsaturated polyester resins use reactive diluents such as styrene and acrylic acid monomers, but the resulting resins have disadvantages such as strong odor, strong toxicity, and poor flexibility.
In recent years, although some of them have been adjusted to solvent-free resins, in order to ensure the workability, the measures taken are often to reduce the molecular weight of the resin. Although the workability is convenient, it will greatly prolong the grinding time of the resin. bring inconvenience

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified solvent-free polyester resin and primer containing same
  • Modified solvent-free polyester resin and primer containing same
  • Modified solvent-free polyester resin and primer containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A modified polyester resin without solvent, comprising the mass percentage of the raw material,

[0024] 25% pentaerythritol, dipentaerythritol 3%, 7% 1,4-butanediol, 1,4 5% succinic acid, isononanoic acid, 15%, 15% iso-octanoic, 30% of [epsilon] -caprolactone; further comprising antioxidants, antioxidants accounted for 0.2% of all raw materials.

[0025] Starting material was prepared using a modified method of the above-described solvent-free polyester resin is: all the raw materials into the reaction kettle, under stirring, gradually heated up to 160 ℃ IH incubation reaction, and then heated to at 210 deg.] C / h ramp rate of 10 deg.] C after incubation the reaction 6h, until the acid value is less than 5mgKOH / g, then cooled to 160. deg.] C, evacuated 15min to the reaction system the water generated in extrusion, detecting the viscosity, after passing the acid value decreased to room temperature to obtain a solvent-free modified poly ester resin.

Embodiment 2

[0027] A modified polyester resin without solvent, comprising the mass percentage of the raw material,

[0028] 30% of pentaerythritol, dipentaerythritol 5%, 5% 1,4-butanediol, 1,4-3% succinic acid, 15% isononanoic acid, iso-octanoic acid 14%, ε- caprolactone 28%; further comprising antioxidants, antioxidants accounted for 0.2% of all raw materials.

[0029] Starting material was prepared using a modified method of the above-described solvent-free polyester resin is: all the raw materials into the reaction kettle, under stirring, gradually heated up to 160 ℃ IH incubation reaction, and then heated to at 200 ℃ / h heating rate of 8 ℃ after incubation the reaction 7H, until the acid value is less than 5mgKOH / g, then cooled to 160. deg.] C, evacuated 15min to the reaction system the water generated in extrusion, detecting the viscosity, after passing the acid value decreased to room temperature to obtain a solvent-free modified poly ester resin.

Embodiment 3

[0031] A modified polyester resin without solvent, comprising the mass percentage of the raw material,

[0032] 25% pentaerythritol, dipentaerythritol 4%, 6% 1,4-butanediol, 1,4-8% succinic acid, isononanoic acid, 15%, 12% iso-octanoic, 30% Cyclopentadecanolide; further comprising antioxidants, antioxidants accounted for 0.2% of all raw materials.

[0033] Starting material was prepared using a modified method of the above-described solvent-free polyester resin is: all the raw materials into the reaction kettle, under stirring, gradually heated up to 160 ℃ IH incubation reaction, and then heated to at 220 deg.] C / h ramp rate of 6 ℃ after incubation the reaction 5h, until the acid value is less than 5mgKOH / g, then cooled to 160. deg.] C, evacuated 15min to the reaction system the water generated in extrusion, detecting the viscosity, after passing the acid value decreased to room temperature to obtain a solvent-free modified poly ester resin.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a modified solvent-free polyester resin and a primer containing the same. The modified solvent-free polyester resin comprises 20-40% of polyol, 3-10% of binary acid, 25-35% of monobasic acid containing more than 8 carbon atoms and branched chains, and 25-35% of cyclic lactone, the number of ring-forming carbon atoms in the cyclic lactone is greater than or equal to 6; a method for preparing the modified solvent-free polyester resin from the raw materials comprises the following steps: putting all the raw materials into a reaction kettle, stirring, heating to 155-165 DEG C, carrying out heat preservation reaction for 0.5-1.5 hours, heating to 200-220 DEG C, carrying out heat preservation reaction until the acid value is less than 5mgKOH / g, cooling to 165 DEG C or below, vacuumizing to remove moisture, and cooling to room temperature to obtain the modified solvent-free polyester resin. The product has the characteristics of long activation period in the early stage and high reaction speed in the later stage, and has excellent properties such as higher crosslinking degree, better flexibility, better adhesive force and better sanding property after being cured.

Description

Technical field [0001] The present invention relates to the field of coating technology, particularly relates to a modified polyester resin, and solvent-free primer containing the resin. Background technique [0002] 20-50% volatile solvent present in about a conventional resin, which is bound to cause the volatile solvent volatilized upon exceeding atmospheric VOC content. So with social progress and people's increasing emphasis on environmental issues, reducing the use of oil-based paint containing volatile solvent, reducing VOC emissions and improve the general direction of the paint is water-based paint, but because of different water-based resin own shortcomings and industry requirements , the aqueous resin does not result in full extension, more dependent on some special industries high solids or even solvent free resins, such as high-speed applications like putty. [0003] Polyester coatings are widely used coating of furniture, a piano, a television, collecting housing, t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G63/66C08G63/78C09D175/06C09D5/00
CPCC08G63/66C08G63/78C09D175/06C09D5/002
Inventor 吴昊孙飚
Owner JIANGSU HUALUN CHEM
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com