Unlock instant, AI-driven research and patent intelligence for your innovation.

Particulate materials

a technology of particle materials and glass, applied in the field of particle polymers and particulate glasses, can solve the problems of frequent complex or expensive to achieve the desired properties

Inactive Publication Date: 2012-03-15
LYNCH DANIEL ERIC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention relates to the use of particulate polymers and hollow particulate glasses as substrates for active agents. These substrates have desirable properties such as absorbing compounds of interest, being coated with inorganic glass layers, and producing hollow permeable glass spheres. The invention provides new materials with these properties for use as substrates. The particulate polymers are prepared by copolymerizing unsaturated heterocyclic monomers and squaric or croconic acid or a derivative thereof. The hollow particulate glasses are produced by pyrolysis of a glass-coated polymer produced by copolymerizing an unsaturated heterocyclic monomer and squaric or croconic acid or a derivative thereof. The use of these substrates as supports for active agents has many applications, such as in reservoirs, encapsulating agents, and materials for release control."

Problems solved by technology

In the case of these particulate substrate materials, it is frequently complex or expensive to achieve the desired properties in terms of particle size, particle size distribution, porosity, loading characteristics, release characteristics, solvent penetrability, etc.

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
  • Particulate materials
  • Particulate materials
  • Particulate materials

Examples

Experimental program
Comparison scheme
Effect test

example 2

Absorption of Metal Ions by poly(1-methylpyrrol-2-ylsquaraine)

[0030]Poly(pyrrol-2-ylsquaraine)s can absorb elemental ions by soaking in an aqueous acidic solution containing dissolved elemental salts. Table 1 lists the metal ions that have been absorbed by poly(1-methylpyrrol-2-yl-squaraine). Table 1 includes the elemental salt and the acid used to dissolve that salt.

[0031]1 gram of poly(1-methylpyrrol-2-yl-squaraine) was added to a 30 cm3 conc. acid or aqueous acid solution containing 1 gram of dissolved elemental compound, or a mixture of elemental compounds. The mixture was stirred for 5 minutes and then sonicated for three seconds followed by a further stirring for 25 minutes. The poly(1-methylpyrrol-2-yl-squaraine) was then removed from the mixture by filtration.

TABLE 1Elemental inorganic AtomicReactant compoundcompoundNo.Elementdissolved in acidAcid usedproduced in shells3LiLiClHClLi2SiO3, Li2Si2O5, SiO25BH3BO3—ucc B11NaNaClHClNaCl, Na2Si2O5, SiO212MgMg(CH3CO2)2•6H2OHClMgO13Al...

example 3

Use of Poly(pyrrol-2-ylsquaraine)s in the Preparation of Inorganic Materials

[0034]1 gram of poly(1-methylpyrrol-2-yl-squaraine) was added to a 30 cm3 conc. acid or aqueous acid solution containing 1 gram of dissolved elemental compound, or a mixture of elemental compounds. The mixture was stirred for 5 minutes and then sonicated for three seconds followed by further stirring for 25 minutes. The poly(1-methylpyrrol-2-yl-squaraine) was then removed from the mixture by filtration. Inorganic materials were produced by heating the element-containing poly-1-methylpyrrol-2-ylsquaraine) in an oven heating from room temperature to 660° C.

[0035]FIG. 2 is a scanning electron microscope picture of iron oxide (Fe2O3) prepared by this method.

example 4

Use of Poly(pyrrol-2-ylsquaraine)s as Template Materials for the Production of Hollow Silica Shells

[0036]1 gram of poly(1-methylpyrrol-2-ylsquaraine) was added to a 30 cm3 solution containing 9:1 tetraethoxysilane:ethanol. The mixture was stirred for 5 minutes and then sonicated for three seconds followed by further stirring for 25 minutes. The silicated poly(1-methylpyrrol-2-ylsquaraine) was then removed from the mixture by filtration and oven (60° C.) dried. 1 gram of the silicated poly(1-methylpyrrol-2-ylsquaraine) was added to a 30 cm3 conc. acid solution. The mixture was stirred for 5 minutes and then sonicated for three seconds followed by further stirring for 25 minutes. The silicated poly(1-methylpyrrol-2-ylsquaraine) was then removed from the mixture by filtration. Hollow silica shells were produced by heating the silicated poly(1-methylpyrrol-2-ylsquaraine) in an oven heating from room temperature to 660° C.

[0037]FIG. 3 shows a scanning electron microscope picture of the h...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
temperatureaaaaaaaaaa
temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention provides the use of a particulate polymer material as a support for an active agent, characterised in that said polymer material is a polymer produced by copolymerising an unsaturated heterocyclic monomer and squaric or croconic acid or a derivative thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. patent application Ser. No. 11 / 579,271, filed Oct. 31, 2006.BACKGROUND OF THE INVENTION[0002]This invention relates to particulate polymers and particulate glasses prepared therefrom, to their use as reservoirs or encapsulating agents, to reservoir and encapsulating agent compositions and to materials containing such compositions, in particular to materials in which the basic polymer is prepared using the combination of an unsaturated heterocyclic monomer and a mono-unsaturated four or five membered dihydroxyl, di- or tri-oxo monomer, i.e. squaric acid or croconic acid, or an activated derivative thereof.[0003]In many technical fields, particulate substrate materials are used as reservoirs for or to encapsulate chemical compounds having desirable properties, e.g. colorants, diagnostic agents, catalysts, growth media, etc.[0004]Typical such particular substrate materials include porous, solid and ho...

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
Patent Type & Authority Applications(United States)
IPC IPC(8): C03B19/10C08F226/06C08F222/02B32B17/00C03C11/00C04B38/00C08G61/12
CPCC03C11/002Y10T428/2998Y10T428/2982C03C23/0095
Inventor LYNCH, DANIEL ERIC
Owner LYNCH DANIEL ERIC