Copolymers of nanoparticles, vinyl monomers and silicone

A technology of vinyl monomers and nanoparticles, applied in the direction of nanotechnology, nanotechnology, grafted polymer adhesives, etc., can solve the problems of accumulated peeling force and sheet removal force, and achieve the effect of stable peeling 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 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

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example

[0098] 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.

[0099] Material

[0100] demonstrative

[0101]

example 1

[0108] Example 1. Synthesis of KF-2001 / NVP / MA / AA / A-174 (33.7 / 35.5 / 24.8 / 4 / 2) modification 5nm silicon dioxide

[0109] 5nm modified with 40.44g KF-2001 (mercapto-functional silicone), 42.60g NVP (N-vinylpyrrolidone), 29.76g MA (methyl acrylate), 4.80g AA (acrylic acid), 6.86g A-174 Silica (35% solids in MEK), 175.54 g MEK, and 0.3602 g VAZO-64 (azobisisobutyronitrile) were added to a narrow mouth quart jar. 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. To convert to waterborne material, take 15 g of the above solventborne material (38.44% solids in MEK) into an 8 oz open bottle, then add 52 g of DI H 2 0 and 0.22 g ammonium hydroxide. The resulting homogeneous dispersion was vacuum stripped with a Rotovap at 50°C to remove MEK. After removing substantially all of the MEK, 10.3% aqueous material was obtained as a solid.

example 2

[0110] Example 2. Synthesis of KF-2001 / NVP / MA / AA / A-174 (33.7 / 32.5 / 24.8 / 4 / 5) modification 5nm silicon dioxide

[0111] The procedure of Example 1 was repeated except that the feeds were as follows: 40.44g KF-2001, 39g NVP, 29.76g MA, 4.8g AA, 17.14g A-1745nm modified silica (35% solids in MEK), 168.86g MEK and 0.3605g VAZO-64. To convert to a waterborne material, 15 g of the above solventborne material (38.25% solids in MEK) was added to an 8 oz open bottle followed by 51.6 g of DIH 2 O and 0.22 g ammonium hydroxide. The resulting homogeneous dispersion was vacuum stripped with a Rotovap at 50°C to remove MEK. After removing substantially all of the MEK, 10.4% aqueous material was obtained as a solid.

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Abstract

A copolymer comprises the reaction product of (a) (meth)acrylate functionalized nanoparticles, (b) vinyl monomer, and (c) mercapto-functional silicone. 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, for example, 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, for example, 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 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-vinyl copolymers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08J5/02C08L33/04C08L57/00
CPCC08F283/122C08F2/38C09D143/04C09D151/085C08L83/08C09J2483/005C09J2433/005C09J7/0228B82Y30/00C09J151/085C09J7/401Y10T428/2839C08F230/08C08F226/10C08F220/14C08F220/06C08F283/12C08F292/00C08K9/04C08L83/00
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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