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Polyurethane-based composition

A composition and polyurethane technology, applied in polyurea/polyurethane adhesives, polyurea/polyurethane coatings, adhesive types, etc., can solve problems such as inappropriate

Pending Publication Date: 2021-07-23
BOSTIK SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially making the multi-layer unsuitable for the preparation of flexible packaging for product packaging

Method used

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  • Polyurethane-based composition
  • Polyurethane-based composition
  • Polyurethane-based composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0412] Example 1: Preparation of polyurethane-based composition A-1 with terminal groups T based on polyether polyol and polyester polyol prepare

[0413]190.7 g of Scuranate® TX and 100 g of ethyl acetate were introduced into the reactor and heated to 40°C. Then 22.7 g of Voranol® CP 450 and then 103.3 g of Voranol® P 400 are added successively, taking care to ensure that the temperature of the mixture does not exceed 80 °C. When the temperature of the mixture stabilized, the mixture was heated at 80-85°C for about 1 hour and then cooled to 70°C. 321.6 g of Realkyd® XTR 10410 were then introduced, taking care to ensure that the temperature of the mixture did not exceed 90°C.

[0414] The mixture was kept at 90°C for about 3 hours. The end of the reaction is monitored by controlling the mass percentage of NCO functional groups in the medium, which theoretically needs to be about 5.7%. When the reaction was complete, the mixture was cooled to 70 °C and 166.4 g of 2-hydro...

Embodiment 2

[0416] Example 2: Preparation of polyurethane-based composition A-2 with terminal groups T based on polyether polyol and polyester polyol prepare

[0417] 143.2 g of Scuranate® TX and 100 g of ethyl acetate were introduced into the reactor and heated to 40°C. 22.6 g of Voranol® CP 450 were added slowly and the mixture was heated to 50°C. Then 101.6 g of Voranol® P 400 are added. The reaction mass rose to about 70°C in an exotherm. Once the exotherm was under control, the mixture was maintained at 70°C. After 1 hour of reaction, 241.4 g of Realkyd® XTR 10410 was added. The reaction mass rose in an exotherm up to about 85°C. The mixture was maintained at 85°C for about 2-3 hours. The end of the reaction is monitored by controlling the mass percentage of NCO functional groups in the medium, which theoretically must be about 4.4% by weight. After the reaction was complete, the mixture was cooled to 70°C and 76.6 g of Desmodur® N3300 were introduced. The mixture was homo...

Embodiment 3

[0419] Embodiment 3: the preparation of composition B

[0420] Composition B that has been tested was prepared by simply mixing diamine B1 (Jeffamine® ED148 or H 2 N-(CH 2 ) 10 -NH 2 ) and / or polyamine B2 (Lupasol® FG), its B1 / B2 weight ratio is shown in Table 1 below.

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PUM

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Abstract

The invention relates to a composition containing: - a composition A which contains at least one polyurethane having at least two terminal functions T of the following formula (I): and - a composition B containing at least one amine, and to the use thereof.

Description

[0001] field of invention [0002] The present invention relates to polyurethane-based compositions. [0003] The invention also relates to a multilayer structure (or composite) comprising at least two layers of material bonded together by a layer of the composition of the invention, particularly useful in the field of flexible packaging. [0004] The invention also relates to a compounding method suitable for preparing said complexes. [0005] technical background [0006] Flexible packaging for packaging a very wide variety of products, such as those used in the agri-food, cosmetic or detergent industries, usually consists of several thin layers (sheet or film) with a thickness between 5 and 150 µm and consists of Different materials such as paper, metal (eg aluminium) or consist of thermoplastic polymers. The corresponding composite film (or multilayer), whose thickness can vary between 20-400µm, allows combining the properties of different individual material layers, thus...

Claims

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Application Information

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IPC IPC(8): C08G18/12C08G18/22C08G18/28C08G18/32C08G18/40C08G18/76C08G18/79C09D175/04C09J175/04
CPCC09J175/04C09D175/04C08G18/12C08G18/7621C08G18/792C08G18/222C08G18/4018C08G18/282C08G18/289C08G18/3228C08G18/3206C08G18/771C08G2170/00C08G18/8064
Inventor G·米绍F·西蒙S·富凯
Owner BOSTIK SA
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