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

Method for synthesizing polyester block silicone oil by waste polyester

A technology of polyester block and polyester silicone oil, which is applied in the synthesis of polyester block silicone oil, and in the field of synthesizing polyester block silicone oil with waste polyester, which can solve the problems of using unpolyether polyester copolymer polyols, etc. Achieve the effect of simple process

Active Publication Date: 2013-11-20
上海诺科生物科技有限公司
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above prior art has synthesized polyether polyester copolymers, but has not further used polyether polyester copolymer polyols, especially for synthesizing polyether block silicone oils

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
  • Method for synthesizing polyester block silicone oil by waste polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Synthesis of polyether polyester polyols from polyester waste: in a four-necked flask with a thermometer, a stirrer, a nitrogen inlet pipe and a fractionation device, 39g of diethylene glycol, 49g of PET polyester bottle fragments, 1000 Molecular weight polyethylene oxide 1000g, n-butyl titanate as catalyst 0.4g. In the case of feeding nitrogen, the temperature is gradually raised to 180°C, the temperature of the fractionation column is lower than 105°C, and the temperature is maintained until no small molecules are distilled; then the temperature is raised to 240°C, and the reaction is kept for 4 hours until the system becomes transparent and uniform; Vacuumize at -0.09MPa for 1h. Cool down to 140°C and discharge.

[0020] Synthesis of block polyester silicone oil: 50g polyether polyester polyol, 60g terminal ethyl acrylate silicone oil (molecular weight: 10000), n-butyl titanate as catalyst 0.1g. Under the condition of feeding nitrogen, gradually raise the temperatu...

Embodiment 2

[0022] Synthetic polyether polyester polyols from waste materials: in a four-necked flask with a thermometer, a stirrer, a nitrogen inlet pipe and a fractionation device, successively drop into ethylene glycol 49g, PET polyester bottle fragments 29g, polyepoxide with a molecular weight of 2000 680 g of ethane, and 0.3 g of n-butyl titanate as a catalyst. In the case of feeding nitrogen, the temperature is gradually raised to 190°C, the temperature of the fractionation column is lower than 105°C, and the temperature is maintained until no small molecules are distilled; then the temperature is raised to 250°C, and the reaction is kept for 4 hours until the system becomes transparent and uniform; Vacuum at -0.098MPa for 1h. Cool down to 140°C and discharge.

[0023] Synthesis of block polyester silicone oil: 70g of polyether polyester polyol, 30g of acrylate-terminated silicone oil (molecular weight: 20,000), and 0.3g of n-butyl titanate as a catalyst. Under the condition of fe...

Embodiment 3

[0025] Synthesis of polyether polyester polyols from waste materials: in a four-necked flask with a thermometer, a stirrer, a nitrogen inlet pipe and a fractionation device, 38 g of neopentyl glycol, 29 g of PET polyester bottle fragments, and polycyclic polycyclic alcohols of 3000 molecular weight are successively dropped into Oxyethane 680g, manganese acetate as catalyst 0.3g. In the case of feeding nitrogen, the temperature is gradually raised to 190°C, the temperature of the fractionation column is lower than 105°C, and the temperature is maintained until no small molecules are distilled; then the temperature is raised to 250°C, and the reaction is kept for 4 hours until the system becomes transparent and uniform; Vacuum at -0.098MPa for 1h. Cool down to 140°C and discharge.

[0026] Synthesis of block polyester silicone oil: 80g polyether polyester polyol, 25g terminal butyl acrylate silicone oil (molecular weight: 10000), 0.3g zinc acetate as catalyst. Under the condit...

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 method for synthesizing polyester block silicone oil by waste polyester, belonging to the technical field of chemical synthesis and textile processing. According to the invention, polyether-polyester polyhydric alcohol is synthesized by the following constituents: 1) 10-50% of waste polyester, 10-40% of polyhydric alcohol, 5-70% of polyether and 0.05-5% of catalyst; and the polyester block silicone oil is synthesized by the following constituents: 2) 10-90% of polyether-polyester polyhydric alcohol, 10-90% of polyester-terminated silicone oil and 0.05-5% of catalyst. The invention further discloses application of the polyester block silicone oil in textile processing, and the polyester block silicone oil can be used as moisture absorption sweating finishing agent, softening agent, smoothing agent, and so on, in the textile processing, so that the tactility, the hydrophilcity and the washability of the textile fabric are jointly improved. In the method, the waste polyester is used as one of the main materials, and the technical process is simple and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis and textile processing, and relates to a method for synthesizing polyester block silicone oil, in particular to a method for synthesizing polyester block silicone oil by using waste polyester. Background technique [0002] Today, polyester waste has become a major environmental protection issue in our daily life. Vigorously carrying out the comprehensive utilization of recycled polyester waste is not only economically valuable, but also more significant in terms of environmental protection. [0003] Existing patent reports relate to the synthetic work of utilizing waste polyester to synthesize polyether polyester resin. As proposed in US 4,604,410, etherified aromatic polyols are prepared by digesting scrap polyalkylene terephthalate with low molecular weight polyhydroxyl compounds containing 3-8 hydroxyl groups, the resulting intermediate The body is alkoxylated with 1-4 moles of ethy...

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): C08G81/00C08G77/445C08G63/668D06M15/643
Inventor 倪红波胡永生
Owner 上海诺科生物科技有限公司