US4614758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of paraffin waxes or microwaxes for silicone pastes, and the packaging and use thereof
Assignee: Bayer AG
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Filing: 1985-04-30
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Granted: 1986-09-30
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Expires: 2005-04-30
Abstract
Abstract The present invention relates to the use of paraffin waxes or microwaxes in silicone pastes, in particular in kneadable compositions for the production of accurate impressions of teeth. The silicone pastes are preferably cold-vulcanizing two-component silicone rubber systems which are known per se and in which two pastes are mixed and then crosslink after about 2-5 minutes at room temperature.
Inventors
- 👤 Peter Schwabe
- 👤 Reiner Voigt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:38
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; A; A61; A61K; A61K6/00; A61K6/90; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/20; Y; Y10; Y10S; Y10S206/00; Y10S206/813
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
116 words
A paste-like silicone-containing composition which crosslinks comprising (a) a paraffin wax, (b) an organopolysiloxane, said organopolysiloxane having two or more vinyl groups when said crosslinking is by an addition system, said organopolysiloxane having two or more hydroxyl groups when said crosslinking is by a condensation system, (c) a filler, (d) a crosslinking agent, said crosslinking agent being an organohydridopolysiloxane when said crosslinking is by an addition system, (e) a paraffin oil and (f) a catalyst, said catalyst being a catalyst to accelerate an addition reaction when said crosslinking is by an addition system, said catalyst being a catalyst which catalyzes condensation of said crosslinking agent and said polydimethylsiloxane when said crosslinking is by a condensation system.
Claim 2
Dependent Claim
116 words
A paste-like silicone-containing composition which crosslinks comprising (a) a paraffin wax, (b) an organopolysiloxane, said organopolysiloxane having two or more vinyl groups when said crosslinking is by an addition system, said organopolysiloxane having two or more hydroxyl groups when said crosslinking is by a condensation system, (c) a filler, (d) a crosslinking agent, said crosslinking agent being an organohydridopolysiloxane when said crosslinking is by an addition system, (e) a paraffin oil and (f) a catalyst, said catalyst being a catalyst to accelerate an addition reaction when said crosslinking is by an addition system, said catalyst being a catalyst which catalyzes condensation of said crosslinking agent and said polydimethylsiloxane when said crosslinking is by a condensation system.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 wherein said composition contains a paraffin wax which melts in the range of 30° to 55° C.
Claim 4
Dependent Claim
19 words
A composition according to claim 2 wherein said paraffin wax melts in the range of 35° to 50° C.
Claim 5
Dependent Claim
42 words
A paste-like silicone-containing composition according to claim 1, which crosslinks by a condensation system, wherein the catalyst is a liquid or paste-like hardener component containing a metal salt of a monocarboxylic acid and wherein the crosslinking agent is a silicic acid ester.
Claim 6
Dependent Claim
13 words
A composition according to claim 4, containing a polydimethylsiloxane with terminal hydroxyl groups.
Claim 7
Dependent Claim
13 words
A composition according to claim 4 containing a polydimethylsiloxane containing terminal vinyl groups.
Claim 8
Dependent Claim
24 words
A composition according to claim 5 wherein said paraffin wax is present in said composition in an amount of 1 to 10% by weight.
Claim 9
Dependent Claim
24 words
A composition according to claim 6 wherein said paraffin wax is present in said composition in an amount of 1 to 10% by weight.
Claim 10
Dependent Claim
16 words
A composition according to claim 7 additionally containing 3 to 5% by weight of paraffin oil.
Claim 11
Dependent Claim
16 words
A composition according to claim 8 additionally containing 3 to 5% by weight of paraffin oil.
Claim 12
Dependent Claim
23 words
A composition according to claim 7 wherein said paraffin wax comprise a mixture of C 15 to C 40 straight-chain or branched alkanes.
Claim 13
Dependent Claim
23 words
A composition according to claim 8 wherein said paraffin wax comprise a mixture of C 15 to C 40 straight-chain or branched alkanes.
Claim 14
Dependent Claim
15 words
A paste-like silicone-containing composition according to claim 1, wherein said filler is an inorganic filler.
Claim 15
Dependent Claim
13 words
A paste-like silicone-containing composition according to claim 1, which further includes a dyestuff.
Claim 16
Dependent Claim
24 words
A paste-like silicone-containing composition according to claim 1, wherein said catalyst which accelerates the addition reaction is a platinum complex prepared from hexachloroplatinic-IV acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |