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Vinyl ethers and processes for their preparation

A vinyl ether, alkenyl technology, used in cationic curing agent or 1-component or 2-component system, used in the field of preparation of UV adhesives

Pending Publication Date: 2022-05-27
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most existing methods for preparing compounds suitable for such adhesives are not based on sustainable and environmentally friendly technologies

Method used

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  • Vinyl ethers and processes for their preparation
  • Vinyl ethers and processes for their preparation
  • Vinyl ethers and processes for their preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0235]

[0236] Reaction scheme 1

[0237] Vinylation at room temperature

[0238] A round bottom flask (1000 mL) was charged with (0.5 mol%; 638.4 mg) Pd(OOCCF) 3 ) and (0.5 mol %; 300 mg) 2,2'-bipyridine. Subsequently, ethyl vinyl ether (15 equiv; 415 mL) and (1.6 mL; 3 mol%) NEt were added 3 . The mixture was stirred for 10 minutes. After this time (40 g; 0.384 moles) 1,4-pentanediol was added. During the course of the reaction (48 hours), the flask was sealed and stirred at room temperature. The catalyst was filtered off by using a pleated filter, followed by distillation of excess ethyl vinyl ether from the resulting filtrate on a rotary evaporator (40° C., 700 mbar→300 mbar). The crude mixture was then distilled under vacuum in order to obtain the first fraction (P-2-divin only) at 45°C and 0.5 mbar and at 60°C and 0.1 mbar Second fraction (mixture of P-1-prim. and P-1-secondary (P-1-sek.)).

[0239] Conversion of 1,4-pentanediol: 96%

[0240] Yield of P-2-d...

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Abstract

The invention relates to a process for preparing at least one vinyl ether compound of formula (I) and to a vinyl ether compound of formula (I), preferably obtainable by the process according to the invention. Furthermore, the invention relates to a polymer obtainable by polymerizing a vinyl ether compound of formula (I) according to the invention, to a binder comprising at least one polymer according to the invention, and to the use of at least one vinyl ether compound of formula (I) according to the invention or of at least one polymer according to the invention for producing UV adhesives, cationic curing agents or 1-component or 2-component systems.

Description

technical field [0001] The present invention relates to a process for the preparation of at least one vinyl ether compound of formula (I), and to a vinyl ether compound of formula (I) obtainable preferably by the process according to the invention. Furthermore, the present invention relates to polymers obtainable by polymerizing vinyl ether compounds of formula (I) according to the invention, to adhesives comprising at least one polymer according to the invention, and to at least one polymer according to the invention The use of a vinyl ether compound of formula (I) or at least one polymer according to the invention for the preparation of UV adhesives, cationic curing agents or 1-component or 2-component systems. Background technique [0002] UV adhesives and reactive adhesives are widely used in the art and are general purpose adhesives for many different applications including, but not limited to, the automotive industry, furniture, veneer, electronics, and the like. Most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C41/14C07C41/42C07C43/16C07C43/178C08F16/26C08F16/32C09J129/10
CPCC07C41/14C07C41/42C07C43/178C07C43/16C08F16/32C08F16/26C09J129/10C09J4/00C08F216/06C07C41/28C07C2523/44C07C2527/24
Inventor A·布兰特H·贝克B·施皮格尔贝格J·G·德弗里斯
Owner HENKEL KGAA