Curable composition for dental impression
AssigneeDENTSPLY SIRONA Inc.
InventorsMassimo Rossi, Alberto Basso, Lorenzo Galliera
Life of this patent
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Abstract
The present invention is related to a curable composition for dental impression comprising: a curable base composition and a surfactant system comprising a first surfactant, which is at least one compound having formula (I) and a fluorotelomer having formula (II), which works synergistically with the fluorotelomer so as to permit the composition to surprisingly have a lower contact angle; these results are reached with relatively low concentrations of biodegradable surfactants.
Claims12
A curable composition for dental impression comprising:
- a curable base composition and
- a surfactant system comprising a first surfactant, which is at least one compound having the following formula (I)
- wherein R are each, independently of one another, a C1-C4 aliphatic;
- each R1 is, independently of the others, a C1-C6 aliphatic, each R2 is, independently of the others, selected from a group consisting of:
- H and C1-C3 aliphatic;
- each R3 is selected, independently of the others, from a group consisting of:
- H and C1-C4 aliphatic;
- x is an integer from 0 to 5;
- y is an integer from 1 to 10;
- a is an integer from 1 to 30;
- b is an integer from 0 to 5;
- and a fluorotelomer, which is at least one compound having the following formula (II):
- CF3—(CFX)n—(CH2)m—(CHOH)p—(CYZOH) (II),
- wherein each X is selected, independently of the others, in the group consisting of:
- —F and —CF3;
- Y is selected in the group consisting of:
- —H and —OH;
- Z is selected in the group consisting of:
- —H and —OH;
- n is an integer from 2 to 20;
- m is an integer from 0 to 5;
- p is an integer from 0 to 2.
A curable composition comprising a curable base composition and
- a surfactant system comprising a first surfactant, which is at least one compound having the following formula (I)
- wherein R are each, independently of one another, a C1-C4 aliphatic;
- each R1 is, independently of the others, a C1-C6 aliphatic, each R2 is, independently of the others, selected from a group consisting of:
- H and C1-C3 aliphatic;
- each R3 is selected, independently of the others, from a group consisting of:
- H and C1-C4 aliphatic;
- x is an integer from 0 to 5;
- y is an integer from 1 to 10;
- a is an integer from 1 to 30;
- b is an integer from 0 to 5;
- and a fluorotelomer, which is at least one compound having the following formula (II):
- CF3—(CFX)n—(CH2)m—(CHOH)p—(CYZOH) (II),
- wherein each X is selected, independently of the others, in the group consisting of:
- —F and —CF3;
- Y is selected in the group consisting of:
- —H and —OH;
- Z is selected in the group consisting of:
- —H and —OH;
- n is an integer from 2 to 20;
- m is an integer from 0 to 5;
- p is an integer from 0 to 2;
- for use in taking a mold of at least a part of a mouth.
A method of taking an impression comprising contacting a curable composition comprising a curable base composition and
- a surfactant system comprising a first surfactant, which is at least one compound having the following formula (I)
- wherein R are each, independently of one another, a C1-C4 aliphatic;
- each R1 is, independently of the others, a C1-C6 aliphatic, each R2 is, independently of the others, selected from a group consisting of:
- H and C1-C3 aliphatic;
- each R3 is selected, independently of the others, from a group consisting of:
- H and C1-C4 aliphatic;
- x is an integer from 0 to 5;
- y is an integer from 1 to 10;
- a is an integer from 1 to 30;
- b is an integer from 0 to 5;
- and a fluorotelomer, which is at least one compound having the following formula (II):
- CF3—(CFX)n—(CH2)m—(CHOH)p—(CYZOH) (II),
- wherein each X is selected, independently of the others, in the group consisting of:
- —F and —CF3;
- Y is selected in the group consisting of:
- —H and —OH;
- Z is selected in the group consisting of:
- —H and —OH;
- n is an integer from 2 to 20;
- m is an integer from 0 to 5;
- p is an integer from 0 to 2;
- with at least a part of a mouth.
Dependencies are inferred from the claim text.