US4415696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polycarbonate compositions containing a C16 -C36 alkane compound as a mold release agent
Assignee: General Electric Co
•
Filing: 1981-12-07
•
Granted: 1983-11-15
•
Expires: 2001-12-07
Abstract
Abstract A composition comprising a thermoplastic resin and a mold release effective amount of an alkane.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01; C08L; C08L69/00; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
30 words
A composition consisting essentially of an aromatic polycarbonate resin and a mold release effective amount of a single normal alkane having from about 16 to about 36 carbon atoms, inclusive.
Claim 2
Dependent Claim
30 words
A composition consisting essentially of an aromatic polycarbonate resin and a mold release effective amount of a single normal alkane having from about 16 to about 36 carbon atoms, inclusive.
Claim 3
Dependent Claim
21 words
A composition in accordance with claim 1 wherein the alkane is selected from the group consisting of hexadecane, octadecane and docosane.
Claim 4
Dependent Claim
20 words
A composition in accordance with claim 1 wherein the alkane is selected from the group consisting of octacosane and hexatricontane.
Claim 5
Dependent Claim
27 words
A composition in accordance with claim 1 wherein the alkane is present in quantities of from about 0.01 to about 3.0 weight percent of the polymeric composition.
Claim 6
Dependent Claim
22 words
A composition in accordance with claim 4 wherein the weight percent of alkane is from about to about 0.05 to about 2.0.
Claim 7
Dependent Claim
18 words
A composition in accordance with claim 1 wherein an effective amount of an ultra violet stabilizer is present.
Claim 8
Dependent Claim
17 words
A composition in accordance with claim 1 wherein an effective amount of a flame retardant is present.
Claim 9
Dependent Claim
17 words
A composition in accordance with claim 1 wherein an effective amount of a hydrolytic stabilizer is present.
Claim 10
Dependent Claim
17 words
A composition in accordance with claim 1 wherein an effective amount of a drip inhibitor is present.
Claim 11
Dependent Claim
17 words
A composition in accordance with claim 1 wherein an effective amount of a thermal stabilizer is present.
Claim 12
Dependent Claim
17 words
A composition in accordance with claim 1 wherein an effective amount of an active filler is present.
Claim 13
Dependent Claim
16 words
A composition in accordance with claim 1 wherein an effective amount of a pigment is present.
Claim 14
Dependent Claim
17 words
A composition in accordance with claim 15 wherein an effective amount of an impact modifier is present.
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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |