Unsaturated polyester resin for artificial stone and synthesis method thereof

A polyester resin, unsaturated technology, applied in the field of polymer chemistry, can solve the problems of not being able to meet the requirements of artificial stone technology, fast curing of ortho-phthalic resin at room temperature, and large curing shrinkage, etc. The effect of smooth curing heat release, small curing shrinkage, scientific and reasonable design

Active Publication Date: 2015-04-01
ZHAOQING FUTIAN CHEM IND
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, ortho-phthalic resins are mostly used. Ortho-phthalic resins can generally meet the requirements of mechanical properties and wettability. However, ortho-phthalic resins cure at room temperature and release heat quickly and have a large curing shrinkage rate, which cannot well meet the requirements of artificial stone. Requirements for the "block method" process

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
  • Unsaturated polyester resin for artificial stone and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In a 2L four-neck flask with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser, add 140g of glacial acetic acid, 350g of diethylene glycol, 255g of glycerol, 563g of maleic anhydride and 135g of dicyclopentadiene Alkene (DCPD, 80-85% content), heated to 140-145°C under nitrogen protection for reflux reaction for 1 hour. Then change the system to the distillation state, gradually increase the temperature, control the temperature of the distillation head from 101°C to 205°C, keep warm until the acid value reaches 50-55 mgKOH / g, and vacuum until the acid value is 28-32 mgKOH / g. Cool down to 190-195°C, add 0.1g of hydroquinone, stir evenly, cool to 120-125°C, add 800g of styrene to dilute. After cooling and filtering, a yellow transparent viscous liquid was obtained.

Embodiment 2

[0024] In a 2L four-necked flask with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser, add 300g benzoic acid, 168g ethylene glycol, 135g diethylene glycol, 220g glycerol, and 350g maleic anhydride in sequence , 210g of phthalic acid and 253g of dicyclopentadiene (DCPD, 80-85% content), heated to 140-145°C under nitrogen protection for reflux reaction for 1 hour. Then change the system to the distillation state, gradually raise the temperature, control the temperature of the distillation head from 101°C to 205°C, keep warm until the acid value reaches 55-60 mgKOH / g, and vacuum until the acid value is 30-34 mgKOH / g. Cool down to 190-195°C, add 0.1g of hydroquinone, stir evenly, cool to 120-125°C, add 700g of styrene to dilute. After cooling and filtering, a yellow transparent viscous liquid was obtained.

Embodiment 3

[0026] In a 2L four-necked flask with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser, add 240g glacial acetic acid, 110g propylene glycol, 350g glycerol, 471g maleic anhydride and 293g dicyclopentadiene ( DCPD, 80-85% content), under the protection of nitrogen, the temperature was raised to 140-145°C for reflux reaction for 1 hour. Then change the system to the distillation state, gradually raise the temperature, control the temperature of the distillation head from 101°C to 205°C, keep warm until the acid value reaches 55-60 mgKOH / g, and vacuum until the acid value is 30-34 mgKOH / g. Cool down to 190-195°C, add 0.1g of hydroquinone, stir evenly, cool to 120-125°C, add 840g of styrene to dilute. After cooling and filtering, a yellow transparent viscous liquid was obtained.

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 provides an unsaturated polyester resin for artificial stone, and the unsaturated polyester resin is prepared by adopting bio-based material glycerine, and reacting glycerine with monobasic acid, dibasic alcohol, dibasic anhydride and dicyclopentadiene. In addition, the invention further provides a synthesis method for the unsaturated polyester resin for artificial stone. The process is stable and controllable in reaction process, fast in subsequent polycondensation reaction, less in the generated wastewater amount, and lighter in the colour of the obtained resin, so that the resin has the characteristics of being less in curing shrinkage and gentle in curing heat release at a normal temperature, and is very suitable for production for artificial stone products.

Description

technical field [0001] The invention belongs to the field of polymer chemistry, and in particular relates to an unsaturated polyester resin for artificial stone and a method for synthesizing the resin. Background technique [0002] At present, in the main production bases of artificial stone in my country, Guangdong Yunfu, Fujian Quanzhou and other places, the production of artificial marble mainly adopts the "block method" process (that is, the normal temperature curing process using cobalt naphthenate-methyl ethyl ketone peroxide curing). The process is to mix natural sandstone of about 80 mesh, ultra-fine stone powder of 300-500 mesh, unsaturated polyester resin, pigment paste and other auxiliary materials through stirring and mixing (of which sandstone accounts for 90-93wt%, resin accounts for 7-10wt%) , and then put it into a three-dimensional box-type mold, undergo vacuum, high pressure and strong vibration, and then undergo natural hardening (generally cured for 7 day...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/676C08G63/52C08F283/01
Inventor 徐贵红
Owner ZHAOQING FUTIAN CHEM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap