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Three-functionality-degree organosilicon polyurethane acrylate and synthetic method thereof

A technology of polyurethane acrylate and trifunctionality, which is applied in the field of silane coupling agent modified polyurethane acrylate synthesis, can solve the problems of small molecular weight, poor product compatibility, wide molecular weight distribution, etc., and achieve narrow molecular weight distribution and compatibility Good performance and low production cost

Inactive Publication Date: 2009-12-16
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the problems of poor product compatibility, poor control of reaction in the synthesis process, small molecular weight and wide molecular weight distribution of the synthesized product, etc.

Method used

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  • Three-functionality-degree organosilicon polyurethane acrylate and synthetic method thereof
  • Three-functionality-degree organosilicon polyurethane acrylate and synthetic method thereof
  • Three-functionality-degree organosilicon polyurethane acrylate and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1, weigh 10g of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane (KH-792), add to 11g of γ-(2,3-epoxypropoxy)propyl trimethyl Oxysilane (KH-560), placed in a three-necked flask, mixed evenly, then heated to 70°C for 2 hours to react to obtain a modified silane coupling agent containing three active hydrogen functional groups;

[0028] Vacuumize 100g of PTMG at 110°C for 2 hours to remove the doped water; then lower the temperature to 50°C, add 28.5g of TDI, wait until the temperature is constant, raise the temperature to 85°C and react for 2 hours until the NCO content reaches the design value Stop heating to obtain polyurethane prepolymer one with NCO groups at both ends;

[0029] After mixing 100g of polyurethane prepolymer 1 and 5.6g of hydroxyethyl acrylate, react at 80°C for 2 hours to obtain polyurethane prepolymer 2 with an NCO group at one end;

[0030] Mix 100g of polyurethane prepolymer II with 6.9g of modified silane coupling agent and react at 70°C fo...

Embodiment 2

[0031] Example 2, weigh 10g N-(β-aminoethyl)-γ-aminopropyltriethoxysilane (WD-52), add to 9.6g γ-(2,3-epoxypropoxy)propane Base trimethoxysilane (KH-560), placed in a three-necked flask, mixed uniformly, and then heated to 50 ° C for 3 hours to react to obtain a modified silane coupling agent containing three active hydrogen functional groups;

[0032] Vacuumize 100g of HTPB at 100°C for 3 hours to remove the doped water; then lower the temperature to 40°C, add 24.6g of IPDI, wait until the temperature is constant, raise the temperature to 70°C and react for 3 hours until the NCO content reaches the design value Stop heating to obtain polyurethane prepolymer one with NCO groups at both ends;

[0033] After mixing 100g of polyurethane prepolymer 1 and 5.9g of hydroxyethyl methacrylate, react at 80°C for 2 hours to obtain polyurethane prepolymer 2 with an NCO group at one end;

[0034] Mix 100g of polyurethane prepolymer II with 7.6g of modified silane coupling agent and react ...

Embodiment 3

[0035] Example 3, weigh 10g N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane (WD-53), add to 13.4g γ-(2,3-glycidyloxy ) Propyltrimethoxysilane (KH-560), placed in a three-necked flask, mixed uniformly, and then heated to 90°C for 1 hour to react to obtain a modified silane coupling agent containing three active hydrogen functional groups;

[0036] Vacuumize 100g of PTMG and 210 at 115°C for 1.5 hours to remove the doped water; then cool down to 60°C, add 30.5g of MDI, wait for the temperature to be constant and raise the temperature to 90°C for 1 hour until the NCO content reaches the designed value, stop heating, promptly obtain the two ends as the polyurethane prepolymer one of NCO group;

[0037] After mixing 100g of polyurethane prepolymer 1 and 5.7g of hydroxypropyl acrylate, react at 70°C for 3 hours to obtain polyurethane prepolymer 2 with an NCO group at one end;

[0038] Mix 100g of polyurethane prepolymer II with 5.6g of modified silane coupling agent and react a...

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Abstract

The invention discloses three-functionality-degree organosilicon polyurethane acrylate and a synthetic method thereof. The invention is characterized in that an epoxy radical silane coupling agent is used for modifying a primary amino radical parhelium radical silane coupling agent to obtain a modified silane coupling agent containing three functional groups with active hydrogen; vulcabond and polymer dihydric alcohol are used for carrying out a reaction to obtain a polyurethane performed polymer (1) with NCO radical groups on both ends; then, hydroxy acrylic acid ester and the polyurethane performed polymer (1) are used for carrying out a reaction to obtain a polyurethane performed polymer (2) with an NCO radical group on one end; and finally, the polyurethane performed polymer (2) and the modified silane coupling agent react to obtain the three-functionality-degree organosilicon polyurethane acrylate. The invention has simple technology of the synthetic process and easy control, a product has regular structure, narrower molecular weight distribution and good consistency, the materials have the excellent properties of humidity resistance, heat resistance, weather resistance, oil resistance, good flexibility and low surface energy, and the invention can be applied to the industries of paint and adhesives.

Description

Technical field: [0001] The invention relates to the technical field of synthesis of silane coupling agent-modified polyurethane acrylate, in particular to a trifunctional silicone polyurethane acrylate and a synthesis method thereof, which are mainly used in the coating and adhesive industries. Background technique: [0002] Silicone materials have many excellent properties due to their unique molecular structure, such as high temperature resistance, weather resistance, aging resistance, electrical insulation, and low surface energy, while UV curing technology has high efficiency, less pollution, and less energy consumption. Low-grade characteristics, but its weather resistance is poor, and its flexibility and elongation are not good. If the molecular structure of silicone is properly introduced into the molecular chain of urethane acrylate, a photocurable silicone urethane acrylate material with good comprehensive properties can be obtained. [0003] Silicone polyurethane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G18/67C08G18/10
Inventor 潘光君王建斌解海华
Owner YANTAI DARBOND TECH
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