US4409351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising thermoplastic resin and long chained fatty acid
Assignee: General Electric Co
•
Filing: 1981-06-15
•
Granted: 1983-10-11
•
Expires: 2001-06-15
Abstract
Abstract Long chained fatty acids as effective mold release agents in thermoplastic resins.
Inventors
- 👤 Garland G. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L67/00; C08L69/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
45 words
A composition comprising a thermoplastic resin selected from the group consisting of aromatic polycarbonate, polysulfone, polyethersulfone, polysulfide or polyacrylate in admixture with an injection mold releasing effective amount of a saturated or unsaturated fatty acid having from about 14 to about 36 carbon atoms, inclusive.
Claim 2
Dependent Claim
45 words
A composition comprising a thermoplastic resin selected from the group consisting of aromatic polycarbonate, polysulfone, polyethersulfone, polysulfide or polyacrylate in admixture with an injection mold releasing effective amount of a saturated or unsaturated fatty acid having from about 14 to about 36 carbon atoms, inclusive.
Claim 3
Dependent Claim
18 words
A composition in accordance with claim 1 wherein the thermoplastic resin is a polysulfone, polyethersulfone, polysulfide or polyacrylate.
Claim 4
Dependent Claim
13 words
A composition in accordance with claim 2 wherein the fatty acid is saturated.
Claim 5
Dependent Claim
16 words
A composition in accordance with claim 3 wherein the saturated fatty acid is arachidic or behenic.
Claim 6
Dependent Claim
15 words
A composition in accordance with claim 1 wherein the thermoplastic resin is an aromatic polycarbonate.
Claim 7
Dependent Claim
13 words
A composition in accordance with claim 5 wherein the fatty acid is saturated.
Claim 8
Dependent Claim
16 words
A composition in accordance with claim 6 wherein the saturated fatty acid is arachidic or behenic.
Claim 9
Dependent Claim
17 words
A composition in accordance with claim 6 wherein the saturated fatty acid is hexatrieisocontanoic (C 36 ).
Claim 10
Dependent Claim
35 words
A composition in accordance with claims 3 or 6 wherein the saturated fatty acid is present in an amount of from about 0.01 to about 3 weight percent, based on the weight of thermoplastic resin.
Claim 11
Dependent Claim
25 words
A composition in accordance with claim 3 or 6 wherein the amount of saturated fatty acid is from about 0.05 to about 0.5 weight percent.
Claim 12
Dependent Claim
21 words
A composition in accordance with claim 7 wherein the amount of acid is from about 0.01 to about 3 weight percent.
Claim 13
Dependent Claim
21 words
A composition in accordance with claim 7 wherein the amount of acid is from about 0.05 to about 0.5 weight percent.
Claim 14
Dependent Claim
21 words
A composition in accordance with claim 7 wherein the amount of acid is from about 0.01 to about 0.05 weight percent.
Claim 15
Dependent Claim
21 words
A composition in accordance with claim 3 wherein the amount of acid is from about 0.01 to about 0.05 weight percent.
Claim 16
Dependent Claim
21 words
A composition in accordance with claim 6 wherein the amount of acid is from about 0.01 to about 0.05 weight percent.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |