Fillers and composite materials with zirconia and silica nanoparticles

A nanoparticle, silica technology, applied in zirconia, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as lack of opalescence

Inactive Publication Date: 2011-10-19
3M INNOVATIVE PROPERTIES CO
View PDF54 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although silica-zirconia nanofillers can provide many beneficia

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fillers and composite materials with zirconia and silica nanoparticles
  • Fillers and composite materials with zirconia and silica nanoparticles
  • Fillers and composite materials with zirconia and silica nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0104] Instance

[0105] Unless otherwise indicated, reagents and solvents were obtained from Sigma-Aldrich Corp., St. Louis, MO).

[0106] As used in this article,

[0107] "BisGMA" means 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane;

[0108] "TEGDMA" refers to triethylene glycol dimethacrylate, available from Sartomer Co., Inc., Exton, PA;

[0109] "UDMA" refers to diurethane dimethacrylate, available from Rohm America LLC, Piscataway, NJ under the trade name "ROHAMERE 6661-0";

[0110] "BisEMA6" refers to ethoxylated bisphenol A dimethacrylate, available from Sartomer Co., Inc., Exton, PA;

[0111] "BHT" refers to butylated hydroxytoluene;

[0112] "BZT" refers to 2-(2-hydroxy-5-methacryloyloxyethylphenyl)-2H-benzotriazole, available from Ciba, Inc., Tarrytown, NY;

[0113] "ENMAP" refers to ethyl-(N-methyl-N-phenyl) aminopropionate, synthesized using known methods, such as by Adamson et al.; JCSOA9; J. Chem. Soc.; 1949; spl. 144, Those described in 152, the document is in...

Example

[0130] Examples E1-E3 and comparative examples CE1-CE2

[0131] Several different pastes were prepared by mixing the components listed in Table 2 below.

[0132] Table 2. Paste formulation .

[0133]

[0134] The pastes E1, E2, E3 and CE2 show significant opalescence to the naked eye, appearing orange / yellow on a white background, and blue / white on a black background. The paste CE1 does not show opalescence to the naked eye, and appears yellow to the naked eye on both black and white backgrounds. All pastes appear translucent to transparent.

[0135] The opalescence of pastes E1, E3, CE1 and CE2 was quantitatively measured on a HunterLab Ultrascan XE (Hunter Associates Laboratory, Inc., Reston VA, USA) spectrophotometer, C ab The value (opalescence) is obtained as described below in reflectance against a black background and a measured in transmittance mode * And b * The difference between the values ​​is measured. This is the vector difference in the a-b plane of the two measured...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Fillers containing silica-zirconia nanoclusters are disclosed. The fillers may be prepared by mixing a sol of silica nanoparticles with a sol of preformed, crystalline nanozirconia particles. The fillers provide desirable optical properties, such as opalescence, and are useful in dental compositions.

Description

technical field [0001] The present invention relates to nanoparticle fillers for composites, including dental composites. More particularly, the present invention relates to filler materials having silica-zirconia nanoclusters that provide desirable optical properties, such as opalescence, for use in dental compositions. Background technique [0002] Over the past few decades, dentists and dental patients have increasingly demanded more aesthetically pleasing dental restorations. The dental industry's increasing focus on aesthetic dentistry has led to the development of dental restoration compositions that more closely mimic the appearance of natural teeth. For example, composite resin materials have been developed that can be used to replace tooth-colored fillings such as metal amalgam fillings to provide more natural-looking dental restorations. In recent years, highly aesthetic composites containing silica and / or zirconia nanofillers have become available with shade sys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01G25/00C01G25/02A61K6/884
CPCA61K6/887B82Y30/00C01G25/00C01G25/02C01P2002/50C01P2002/52C01P2004/61C01P2004/62C01P2004/64C01P2006/60C01P2006/65C01P2006/66
Inventor B·D·克瑞格
Owner 3M INNOVATIVE PROPERTIES CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap