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Process for preparing silicone-containing addition polymers

A technology of polysiloxane and polymer, applied in the direction of coating, etc.

Inactive Publication Date: 2008-05-07
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the contrary, in solution such systems show a greatly improved tendency towards polymerization, so the use of unsaturated polysiloxane macromonomers leads to the formation of cross-linked products, which cannot be used in many applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] Regulator (aldehyde-functional polysiloxane):

[0071] With about 59 SiOMe 2 Repeating units of α,ω-dialdehyde-functionalized silicone oils. Manufacturer: Wacker Chemie AG.

[0072] Polysiloxane Macromer:

[0073] α,ω-divinyl functionalized with about 100 SiOMe 2 Repeating unit of polydimethylsiloxane (VIPO 200). Manufacturer: Wacker Chemie AG.

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Abstract

The invention provides a process for preparing silicone-containing addition polymers by means of free-radical addition polymerization of one or more ethylenically unsaturated organic monomers in the presence of copper-free free-radical initiator and of one or more polymerization regulators, characterized in that the polymerization regulators used comprise silicones containing at least one aldehyde group.

Description

technical field [0001] The present invention relates to a process for the preparation of polysiloxane-containing polymers using ethylenically unsaturated monomers susceptible to free-radical polymerisation in the presence of a regulator selected from the group consisting of aldehyde-functional polysiloxanes to aggregate. Background technique [0002] The prior art discloses a series of methods in which organic polymers are modified with polysiloxanes by polymerization of monomers in the presence of polysiloxanes. [0003] European patent document B 771826 describes water-based binders as coatings and binders based on emulsion polymers of vinyl esters, acrylic or methacrylate esters or vinyl aromatic compounds, which include as crosslinking agents containing unsaturated groups such as vinyl, acryloxy and methacryloxy) polysiloxanes. Here the organic monomers are emulsified and polymerized and the polysiloxane is added after a certain point in time during the reaction. Euro...

Claims

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Application Information

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IPC IPC(8): C08F2/38C08F8/42C08K5/5419
CPCC08F2/38C08L83/06C08K5/5419C08G77/42C08G77/448C08L83/10C09D183/10
Inventor K·司塔克C·奥克斯
Owner WACKER CHEM GMBH
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