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Method for obtaining a one component, oxygen curable composition

A composition and compound technology, applied in the directions of dispensing devices, packaging, transportation and packaging, which can solve problems such as toxic, harmful, and explosive

Inactive Publication Date: 2021-09-10
格林塞尔有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the risk of isocyanate groups is minimal, this compound is still toxic and harmful by inhalation or absorption and through skin contact
Additionally, this compound is flammable and may also be explosive

Method used

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  • Method for obtaining a one component, oxygen curable composition
  • Method for obtaining a one component, oxygen curable composition
  • Method for obtaining a one component, oxygen curable composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Example 1: Experimental determination of the amount of oxygen scavenger required

[0095] In an exemplary embodiment of the invention, the amount of oxygen scavenger in the reactive precursor mixture is determined experimentally, in particular when stored in a (pressurized) container to ensure foam precursor combination Good pot life of the product without affecting the cure rate of the foam precursor composition after dispensing.

[0096] To this end, a series of foam precursor compositions, in particular a series of (pressurized) containers containing the foam precursor compositions, is prepared. Each vessel contained the same oxygen-scavenged reactive precursor mixture (comprising reactive oligomers and monomers and optionally any desired additives) but a different amount of oxygen scavenger. After filling the vessel with the deoxygenated reactive precursor mixture and oxygen scavenger, the vessel is (temporarily) closed through the valve under an oxygen-free atmo...

Embodiment 2

[0097] Example 2: Preparation of Aerosol Containers Comprising Foam Compositions

[0098] In another exemplary embodiment of the present invention, the preparation of an aerosol container comprising a foaming composition according to the invention is contemplated, said preparation comprising the following steps.

[0099] 1. All reactive components, additives and organoborane initiators used to prepare the foaming composition are provided to the point of production. At the point of production, the reactive precursor mixture is prepared and conditioned prior to the addition of the oxygen scavenger and organoborane initiator during the vessel filling procedure.

[0100] 2. Initially prepare the reactive precursor mixture (prior to deoxygenation) by mixing the following components:

[0101] - Urethane (meth-)acrylates from all foreseen types; dissolved in reactive diluents of reactive precursor mixtures; reactions for dissolving urethane (meth-)acrylates and USPER sexual dilue...

Embodiment 3

[0114] Example 3: Preparation of reactive precursor mixture for isocyanate-free foaming compositions.

[0115] In certain embodiments, Part 1 of Example 2 includes the step of preparing a reactive precursor mixture.

[0116] (a) The reactive precursor mixture may comprise an aromatic urethane (meth-)acrylate blend comprising an aromatic polyisocyanate , especially aromatic diisocyanates, especially blends of reaction products of partially meth (acrylated) aromatic polyisocyanates and alcohols or polyols, in which all isocyanate groups are partially blocked by (meth)acrylate esters. In particular, the aromatic urethane (meth)acrylate blend comprises an aromatic urethane (meth)acrylate, a fully acrylated aromatic polyisocyanate such as a diacrylated monomer A blend of an aromatic diisocyanate (eg monomeric MDI) and a suitable reactive monomeric diluent. Advantageously, the aromatic urethane (meth-)acrylates as described herein contribute to a higher reactivity of the precurs...

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PUM

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Abstract

The present application relates to a novel polymerizable composition, which can be used in 1K aerosol can systems for forming a foam, comprising a reactive precursor mixture which has been subjected to one or more deoxygenation measures so that it will not react during storage, and an alkyl metal compound, such as an organic borane compound as initiatior. In particular, as the initiation of the polymerization is enabled by oxygen, particularly oxygen from ambient air, the curing of the composition is not dependent on ambient moisture and proceeds even at low temperatures, below 0 DEG C. Advantageously, the compositions of the present invention have a fast curing time when contacted with oxygen or air, and the resulting final cured product has a high quality.

Description

technical field [0001] The present invention relates to a process for the preparation of oxygen-curable compositions which are particularly suitable for use as one-component (1C) compositions in sprayable foam applications, for example for storage in pressurized tanks of the aerosol type 1C oxygen-curable composition. The present invention also provides one-component, oxygen-curable compositions and containers comprising such compositions. Background technique [0002] In one-component or one-component foams, sealants or adhesives, the reactive components are premixed in their final proportions. However, they are chemically blocked and as long as they are not subjected to specific conditions that activate the curing mechanism, they will not cure, i.e. polymerize and / or crosslink. Several ways of initiating the curing mechanism are known. [0003] For example, polyurethane (PU) foams comprising a mixture of polyols, diisocyanates, liquefied gases as blowing agents and seve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/75C08G18/76C08G18/24C08G18/32
CPCC08G18/246C08G18/3206C08G18/672C08G18/755C08G18/7671B65D83/752C08J9/0047C08J9/0052C08J9/02C08J2201/022C08J2207/04C08J2367/07C08J2375/16
Inventor 阿斯特尔·德施里弗乔治·格奥尔基耶夫凯文·赫瓦雷
Owner 格林塞尔有限公司