Copolymers of nanoparticles, vinyl monomers and silicone

A technology of vinyl monomers and nanoparticles, applied in nanotechnology, nanotechnology, grafted polymer adhesives, etc., can solve the problems of loss of adhesion, accumulation of peeling force and sheet removal force, and achieve stability The effect of peel force

Inactive Publication Date: 2010-12-08
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these release coatings are subjected to relatively high temperatures (e.g., temperatures above about 50° C.), undesirable peel and sheet removal forces and / or loss of adhesion can build up in the PSA product

Method used

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  • Copolymers of nanoparticles, vinyl monomers and silicone
  • Copolymers of nanoparticles, vinyl monomers and silicone
  • Copolymers of nanoparticles, vinyl monomers and silicone

Examples

Experimental program
Comparison scheme
Effect test

example

[0103] Objects and advantages of this invention are further illustrated by the following examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this invention.

[0104] Material

[0105] demonstrative

name, chemical formula and / or structure

availability

MEK

methyl ethyl ketone

Sigma-Aldrich

ethanol

C2H5OH

Sigma-Aldrich

Methanol

CH3OH

Sigma-Aldrich

SiMac

Methacryloxypropyl polydimethylsiloxane

Shin-Etsu

VAZO-64

Azobisisobutyronitrile

DuPont

[0106] Isooctylsilane

Sigma-Aldrich

Prostab 5198

polymerization inhibitor

CIBA

MMA

Methyl methacrylate

Sigma-Aldrich

IBMA

Isobutyl methacrylate

Sigma-Aldrich

A-174

3-Methacryloxypropyltrimethoxysilane

Sigma-Aldrich

[0107] Synthesis of methacry...

example 1

[0113] Example 1: Synthesis of SiMac / IBMA / A-174 (60 / 35 / 5) modified 5nm silica:

[0114] 72g SiMac, 42g IBMA (isobutyl methacrylate), 17.14g A-174 modified silica (35% solids in MEK), 168.86g MEK, and 0.3602g VAZO64 were added to a narrow neck quart bottle . In the resulting homogeneous mixture, N 2 5 minutes. The vial was sealed and placed in a hot water bath at 55°C with shaking for 24 hours. The final solids content in MEK was 39.4%. No gel was observed.

example 2

[0117] Example 2: Synthesis of MA / NVP / SiMac / AA / A-1745nm Modified Silica

[0118] 23.1g MA (methyl acrylate), 17.9g NVP (N-vinylpyrrolidone), 2.6g AA (acrylic acid), 15.4g SiMac, 2.9g A-174 modified silica (containing 35% of solid), 158 g MEK, and 0.1809 g VAZO 64 were added to a narrow neck quart bottle. In the resulting homogeneous mixture, N 2 5 minutes. The vial was sealed and placed in a hot water bath at 55°C with shaking for 24 hours. The final solids content was 29.2%. The solution was diluted to 12.5% ​​solids with a 50 / 50 blend of IPA / toluene prior to coating on PET.

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PUM

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Abstract

A copolymer comprises the reaction product of (a) (meth)acrylate functionalized nanoparticles, (b) vinyl monomer, and (c) silicone macromer. The (meth)acrylate functionalize nanoparticles are selected from the group consisting of silica nanoparticles, zirconia nanoparticles, titania nanoparticles, and combinations thereof.

Description

technical field [0001] The present invention relates to copolymers of nanoparticles, vinyl monomers and silicones. Background technique [0002] Silicone-vinyl copolymers are known in the art as release coatings for pressure-sensitive adhesive (PSA) products, and include those with a vinyl polymer backbone and silicone Pendant groups (see, e.g., U.S. Patent No. 4,728,571 (Clemens et al.)) and those silicone-vinyl groups having a silicone polymer backbone and pendant acrylate groups (see, e.g., U.S. Patent No. 5,202,190 (Kantner et al.)) copolymer. However, when these release coatings are subjected to relatively high temperatures (eg, temperatures above about 50° C.), undesirable peel and sheet removal forces and / or loss of adhesion can build up in the PSA product. Contents of the invention [0003] In view of the foregoing, we recognized a need in the art for silicone-vinyl copolymers that, when used as release coatings, are less resistant than conventional silicone-viny...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F290/06C08F292/00C09D133/06
CPCC08F283/126C09D143/04C09J2483/005C08F230/08C09J2433/005C09J2400/283C09J2429/005C09J2400/163C09J2400/263C09J2400/226C09J7/0228C09J7/0235C08F290/068B82Y30/00C09J151/085C09J7/401C09J7/405Y10T428/2848Y10T428/31663Y10T442/20C08F230/085C08F220/1804C08F292/00C08G77/442C08F220/18C08F220/14
Inventor 拉梅什·C·库玛特温·L·麦肯齐卢盈裕
Owner 3M INNOVATIVE PROPERTIES CO
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