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US 10,308,669 B2Granted
Laminated articles for microbial removal and low pressure drop filtration, methods of making, and methods of using same
Assignee3M Innovative Properties Company
InventorsManjiri T. Kshirsagar, Bong Y. Yeom, Timothy J. Rowell, Satinder K. Nayar
Life of this patent
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Abstract
Laminated articles are provided including a porous fibrous nonwoven matrix and guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix. The laminated articles further include a first substrate and a second substrate sealed to the first substrate. Methods of making laminated articles and methods of using laminated articles are also provided.
Claims15
A laminated article comprising:
- a) a porous fibrous nonwoven matrix;
- b) a plurality of guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix, the guanidine-functionalized metal silicate particles comprising:
- a metal silicate particle that is modified with at least one silane having the formula
- X3-nRanSi—Y-G,
- wherein:
- n is 0, 1, or 2;
- each Ra, if present, is independently an alkyl, aralkyl, or aryl;
- Y is a divalent group comprising an alkylene having 2 to 20 carbons;
- G is a guanidine group of the formula —NH—C(═NH)—NH2;
- and
- each X is independently alkoxy or acyloxy;
- c) a first substrate;
- and
- d) a second substrate sealed to the first substrate along at least a portion of a perimeter of the first substrate, wherein the porous fibrous nonwoven matrix is disposed between the first substrate and the second substrate.
11 more elements
A method of making a laminated article, the method comprising:
- a) providing a plurality of fibers;
- b) providing a plurality of guanidine-functionalized metal silicate particles;
- c) mixing the plurality of guanidine-functionalized metal silicate particles and the plurality of fibers together to form a porous fibrous nonwoven matrix having the guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix;
- d) providing a first substrate;
- e) providing a second substrate;
- f) disposing the porous fibrous nonwoven matrix having the guanidine-functionalized metal silicate particles between the first substrate and the second substrate;
- and
- g) sealing the second substrate to the first substrate along at least a portion of a perimeter of the first substrate.
5 more elements
A method of removing microorganisms from a fluid sample, the method comprising:
- a) providing a laminated article, the laminated article comprising:
- 1) a porous fibrous nonwoven matrix;
- 2) a plurality of guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix, the guanidine-functionalized metal silicate particles comprising:
- a metal silicate particle that is modified with at least one silane having the formula
- X3-nRanSi—Y-G
- wherein:
- n is 0, 1, or 2;
- each Ra, if present, is independently an alkyl, aralkyl, or aryl;
- Y is a divalent group comprising an alkylene having 2 to 20 carbons;
- G is a guanidine group of the formula —NH—C(═NH)—NH2;
- and
- each X is independently alkoxy or acyloxy;
- 3) a first substrate;
- and
- 4) a second substrate sealed to the first substrate along at least a portion of a perimeter of the first substrate, wherein the porous fibrous nonwoven matrix is disposed between the first substrate and the second substrate;
- b) providing a fluid sample containing at least one microorganism strain;
- and
- c) contacting the fluid sample with the laminated article such that at least a portion of the at least one microorganism strain is removed from the fluid sample.
15 more elements
A filtration device comprising:
- a) a container having inlet and outlet ports for liquid passage;
- and
- b) a laminated article contained within the container, the laminated article comprising:
- 1) a porous fibrous nonwoven matrix;
- 2) a plurality of guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix, the guanidine-functionalized metal silicate particles comprising:
- a metal silicate particle that is modified with at least one silane having the formula
- X3-nRanSi—Y-G
- wherein:
- n is 0, 1, or 2;
- each Ra, if present, is independently an alkyl, aralkyl, or aryl;
- Y is a divalent group comprising an alkylene having 2 to 20 carbons;
- G is a guanidine group of the formula —NH—C(═NH)—NH2;
- and
- each X is independently alkoxy or acyloxy;
- 3) a first substrate;
- and
- 4) a second substrate sealed to the first substrate along at least a portion of a perimeter of the first substrate, wherein the porous fibrous nonwoven matrix is disposed between the first substrate and the second substrate.
14 more elements
Dependencies are inferred from the claim text.