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Patent US5495029A successfully refreshed from Google Patents.
US5495029A
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(Meth)acrylates containing urethane groups
Assignee: 3D Systems Inc
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Filing: 1994-08-04
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Granted: 1996-02-27
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Expires: 2014-08-04
Abstract
Abstract Novel (meth)acrylates containing urethane groups Novel (meth)acrylates which also contain urethane groups and other polymerizable groups in one and the same molecule and can be polymerized either by means of free radicals and/or cationically are used for the production of coatings, adhesives, photoresists, solder masks or in stereolithography. The mouldings produced therefrom contain a coherent, homogeneous network and have high strength properties, in particular mechanical properties.
Inventors
- 👤 Bettina Steinmann
- 👤 Jean-Pierre Wolf
- 👤 Adrian Schulthess
- 👤 Max Hunziker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:09
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; B; B33; B33Y; B33Y70/00; C; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/12; C07C271/24; C07C271/26; C07C271/28; C07C271/32; C07C271/34; C07C271/36; C07C271/38; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/16; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C08F222/00; C08F222/10; C08F222/1006; C08F222/106; C08F222/1065; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G59/00; C08G59/14; C08G59/1494; C09; C09D; C09D4/00; G03F7/0037; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A (meth)acrylate of the formula I containing urethane groups ##STR31## in which R is a divalent group of the formula ##STR32## R 1 is a cationically polymerizable group or a free-radical-polymerizable group, with the exception of the acrylate and allyl groups, R 2 is an aliphatic, cycloaliphatic or aromatic radical, R 3 is hydrogen or CH 3 , R 4 is the radical of an aliphatic, cycloaliphatic or aromatic diglycidyl compound after removal of the diglycidyl radical, or is the radical of a cycloaliphatic diepoxide, and R 5 is a cycloaliphatic bridge.
Claim 2
Dependent Claim
92 words
A (meth)acrylate of the formula I containing urethane groups ##STR31## in which R is a divalent group of the formula ##STR32## R 1 is a cationically polymerizable group or a free-radical-polymerizable group, with the exception of the acrylate and allyl groups, R 2 is an aliphatic, cycloaliphatic or aromatic radical, R 3 is hydrogen or CH 3 , R 4 is the radical of an aliphatic, cycloaliphatic or aromatic diglycidyl compound after removal of the diglycidyl radical, or is the radical of a cycloaliphatic diepoxide, and R 5 is a cycloaliphatic bridge.
Claim 3
Dependent Claim
53 words
A (meth)acrylate of the formula I containing urethane groups according to claim 1, in which R 1 is a cationically polymerizable group of the formula ##STR33## or a free-radical-polymerizable group of the formula ##STR34## in which x is an integer from 2 to 20, and y is an integer from 1 to 20.
Claim 4
Dependent Claim
18 words
A (meth)acrylate containing urethane groups according to claim 2, in which R 1 is a cationically polymerizable group.
Claim 5
Dependent Claim
57 words
A (meth)acrylate of the formula I containing urethane groups according to claim 1, in which R 2 and R 4 , independently of one another, are a C 4 -C 20 aliphatic bridge, which may be interrupted by at least one ether, ester, urethane, amide or aryle, ne group, and furthermore are a cycloaliphatic or aromatic bridge.
Claim 6
Dependent Claim
34 words
A (meth)acrylate containing urethane groups according to claim 4, in which R 2 is a C 4 -C 20 aliphatic or an aromatic bridge or a plurality of aromatic groups interrupted by aliphatic groups.
Claim 7
Dependent Claim
35 words
A (meth)acrylate containing urethane groups according to claim 4, in which R 4 is a C 4 -C 20 aliphatic bridge interrupted by at least one ether or ester group, or is an aromatic bridge.
Claim 8
Dependent Claim
20 words
A (meth)acrylate containing urethane groups according to claim 2, in which x and y are integers from 1 to 6.
References Cited (Backward Citations)
US4100141A
Cited
EP0111259A2
Cited
US4465718A
Cited
US4575330A
Cited
US4575330B1
Cited
EP0264551A2
Cited
US4879402A
Cited
US4952241A
Cited
EP0360869A1
Cited
US5059511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-26 | 1999-08-28 | 2000-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-26 | 2003-08-28 | 2004-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-26 | 2007-08-28 | 2008-02-27 | $7700.00 | Window Closed / Lapsed |