US4752338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(Meth)-acrylic acid esters
Assignee: Bayer AG
•
Filing: 1986-05-01
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Granted: 1988-06-21
•
Expires: 2006-05-01
Abstract
Abstract (Meth)-acrylic acid esters of the formula ##STR1## in which R 1 and R 2 are each independently hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 are identical or different and represent the group ##STR2## wherein Y is a divalent bridge member from the group ##STR3## and Z is a straight-chain or branched hydrocarbon chain which has 2 to 10 carbon atoms, can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 represents hydrogen or methyl and R 6 represents hydrogen, C 1 -C 6 - alkyl or phenyl, which are useful as dental materials.
Inventors
- 👤 Jurgen Reiners
- 👤 Jens Winkel
- 👤 Erich Klauke
- 👤 Carlhans Suling
- 👤 Wolfgang Podszun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:48
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/28; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C07C231/00; C07C231/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
120 words
A dental filling composition, comprising (meth)-acrylic acid esters of the formula ##STR25## in which R 1 and R 2 are identical or different and denote hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 are identical or different and represent the group ##STR26## wherein Y is a divalent bridge member from the group ##STR27## and Z is a straight-chain or branched hydrocarbon chain which has 2 to 10 carbon atoms, can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 represents hydrogen or methyl and R 6 represents hydrogen, C 1 -C 6 -alkyl or phenyl and a dental filler.
Claim 2
Dependent Claim
120 words
A dental filling composition, comprising (meth)-acrylic acid esters of the formula ##STR25## in which R 1 and R 2 are identical or different and denote hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 are identical or different and represent the group ##STR26## wherein Y is a divalent bridge member from the group ##STR27## and Z is a straight-chain or branched hydrocarbon chain which has 2 to 10 carbon atoms, can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 represents hydrogen or methyl and R 6 represents hydrogen, C 1 -C 6 -alkyl or phenyl and a dental filler.
Claim 3
Dependent Claim
127 words
In a method of coating a dental surface with a coating solution the improvement wherein the coating solution contains a (meth)-acrylic acid ester of the formula ##STR28## in which R 1 and R 2 each independently are hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 each independently represent the group ##STR29## wherein Y is a divalent bridge member from the group ##STR30## and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 is hydrogen, or methyl and R 6 is hydrogen, C 1 - to C 6 -alkyl or phenyl.
Claim 4
Dependent Claim
127 words
In a method of coating a dental surface with a coating solution the improvement wherein the coating solution contains a (meth)-acrylic acid ester of the formula ##STR28## in which R 1 and R 2 each independently are hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 each independently represent the group ##STR29## wherein Y is a divalent bridge member from the group ##STR30## and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 is hydrogen, or methyl and R 6 is hydrogen, C 1 - to C 6 -alkyl or phenyl.
Claim 5
Dependent Claim
129 words
In a method of providing a dental filling with a dental filling material the improvement wherein the dental filling material contains a (meth)-acrylic acid ester of the formula ##STR31## in which R 1 and R 2 each independently are hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 each independently represent the group ##STR32## wherein Y is a divalent bridge member from the group ##STR33## and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 is hydrogen or methyl and R 6 is hydrogen, C 1 - to C 6 -alkyl or phenyl.
Claim 6
Dependent Claim
129 words
In a method of providing a dental filling with a dental filling material the improvement wherein the dental filling material contains a (meth)-acrylic acid ester of the formula ##STR31## in which R 1 and R 2 each independently are hydrogen, chlorine, fluorine or a C 1 - to C 4 -alkyl radical and R 3 and R 4 each independently represent the group ##STR32## wherein Y is a divalent bridge member from the group ##STR33## and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals, wherein R 5 is hydrogen or methyl and R 6 is hydrogen, C 1 - to C 6 -alkyl or phenyl.
Claim 7
Dependent Claim
72 words
A dental filling composition according to claim 1, comprising a (meth)-acrylic acid ester of the formula ##STR34## in which R 3 and R 4 each independently represent one of the radicals ##STR35## wherein R 5 is hydrogen or methyl and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals.
Claim 8
Dependent Claim
17 words
A dental filling composition according to claim 1, wherein said (meth)-acrylic acid ester has the formula ##STR36##
Claim 9
Dependent Claim
17 words
A dental filling composition according to claim 1, wherein said (meth)-acrylic acid ester has the formula ##STR37##
Claim 10
Dependent Claim
17 words
A dental filling composition according to claim 1, wherein said (meth)-acrylic acid ester has the formula ##STR38##
Claim 11
Dependent Claim
17 words
A dental filling composition according to claim 1, wherein said (meth)-acrylic acid ester has the formula ##STR39##
Claim 12
Dependent Claim
72 words
A method of coating according to claim 2, wherein said (meth)-acrylic acid ester has the formula ##STR40## in which R 3 and R 4 each independently represent one of the radicals ##STR41## wherein R 5 is hydrogen or methyl and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals.
Claim 13
Dependent Claim
17 words
A method of coating according to claim 2, wherein said (meth)-acrylic acid ester has the formula ##STR42##
Claim 14
Dependent Claim
17 words
A method of coating according to claim 2, wherein said (meth)-acrylic acid ester has the formula ##STR43##
Claim 15
Dependent Claim
17 words
A method of coating according to claim 2, wherein said (meth)-acrylic acid ester has the formula ##STR44##
Claim 16
Dependent Claim
17 words
A method of coating according to claim 2, wherein said (meth)-acrylic acid ester has the formula ##STR45##
Claim 17
Dependent Claim
75 words
A method of providing a dental filling according to claim 3, wherein said (meth)-acrylic acid ester has the formula ##STR46## in which R 3 and R 4 each independently represent one of the radicals ##STR47## wherein R 5 is hydrogen or methyl and Z is an aliphatic hydrocarbon chain which has 2 to 10 carbon atoms, and which can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals.
Claim 18
Dependent Claim
20 words
A method of providing a dental filling according to claim 3, wherein said (meth)-acrylic acid ester has the formula ##STR48##
Claim 19
Dependent Claim
20 words
A method of providing a dental filling according to claim 3, wherein said (meth)-acrylic acid ester has the formula ##STR49##
Claim 20
Dependent Claim
20 words
A method of providing a dental filling according to claim 3, wherein said (meth)-acrylic acid ester has the formula ##STR50##
Claim 21
Dependent Claim
20 words
A method of providing a dental filling according to claim 3, wherein said (meth)-acrylic acid ester has the formula ##STR51##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |