US4340516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounding mica and resin with heat sensitive additives
Assignee: Ford Motor Co
•
Filing: 1979-12-13
•
Granted: 1982-07-20
•
Expires: 1999-12-13
Abstract
Abstract A method of rapidly compounding melt forming resin, mica and chlorinated hydrocarbon wherein the mica has a coating comprising the chlorinated hydrocarbon, which method comprises providing a molten mass of the resin, contacting the molten mass with the coated mica and kneading the so contacted mica and resin to provide mixing thereof. The compounding is rapid and at optimal temperature.
Inventors
- 👤 Allen J. Keeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:14
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/201; B; B29; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; C08K; C08K9/00; C08K9/10; B29K; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
151 words
A method of compounding in less than about 30 seconds at elevated temperatures mica and melt forming resin made from monomers comprising olefinic hydrocarbon monomers wherein the mica has a coating comprising a chlorinated hydrocarbon having about 65-80% by weight chlorine, which comprises: (A) providing the resin, rendered molten by a first shear and having a melt index (ASTM D1238) below about 15, at a temperature in the range about 10°-60° F. below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon coating, the resin being provided in first and second streams that are counter rotating with respect to one another and provide a turbulence therebetween; (B) introducing the coated mica into the turbulence; and (C) kneading the coated mica into the streams under a second shear, lower than the first shear, at a temperature below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon.
Claim 2
Independent Claim
151 words
A method of compounding in less than about 30 seconds at elevated temperatures mica and melt forming resin made from monomers comprising olefinic hydrocarbon monomers wherein the mica has a coating comprising a chlorinated hydrocarbon having about 65-80% by weight chlorine, which comprises: (A) providing the resin, rendered molten by a first shear and having a melt index (ASTM D1238) below about 15, at a temperature in the range about 10°-60° F. below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon coating, the resin being provided in first and second streams that are counter rotating with respect to one another and provide a turbulence therebetween; (B) introducing the coated mica into the turbulence; and (C) kneading the coated mica into the streams under a second shear, lower than the first shear, at a temperature below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon.
Claim 3
Dependent Claim
26 words
The method in accordance with claim 1, wherein the melt forming resin comprises polypropylene and the additive comprises chlorinated wax having about 65-75% by weight chlorine.
Claim 4
Dependent Claim
13 words
The method in accordance with claim 2, wherein the mica comprises phlogopite mica.
Claim 5
Independent Claim
21 words
The method in accordance with claims 1 or 2 or 3 wherein the upper temperature during compounding is below about 480°.
Claim 6
Independent Claim
31 words
The method in accordance with claims 1 or 2 or 3, wherein the molten mass of resin comprises at least two counter rotating streams of the resin that contact one another.
Claim 7
Dependent Claim
18 words
The method in accordance with claim 1, wherein the resin comprises polypropylene and the additive comprises chlorinated wax.
Claim 8
Dependent Claim
162 words
A continuous method for compounding at elevated temperature in less than about 30 seconds mica and melt forming resin made from monomers comprising olefinic aliphatic hydrocarbon monomers wherein the mica has a coating made by contacting the mica particles with a heat sensitive additive comprising a chlorinated hydrocarbon comprising about 65-80% by weight chlorine, which method comprises: (A) providing at least two streams of molten resin having a melt index (ASTM D1238) below about 15 that are counter rotating with respect to one another and contact one another to provide a turbulence therebetween, the molten resin being at an initial mixing temperature in a range which is not lower than about 60° F. below that temperature at which chlorine containing gas would evolve from the additive; (B) introducing into the turbulence the coated mica; and (C) kneading the resin and mica to provide a mixing thereof at a temperature which below that temperature at which chlorine gas would evolve from the additive.
Claim 9
Dependent Claim
162 words
A continuous method for compounding at elevated temperature in less than about 30 seconds mica and melt forming resin made from monomers comprising olefinic aliphatic hydrocarbon monomers wherein the mica has a coating made by contacting the mica particles with a heat sensitive additive comprising a chlorinated hydrocarbon comprising about 65-80% by weight chlorine, which method comprises: (A) providing at least two streams of molten resin having a melt index (ASTM D1238) below about 15 that are counter rotating with respect to one another and contact one another to provide a turbulence therebetween, the molten resin being at an initial mixing temperature in a range which is not lower than about 60° F. below that temperature at which chlorine containing gas would evolve from the additive; (B) introducing into the turbulence the coated mica; and (C) kneading the resin and mica to provide a mixing thereof at a temperature which below that temperature at which chlorine gas would evolve from the additive.
Claim 10
Independent Claim
119 words
A method of compounding in less than about 15 seconds at elevated temperature mica and polypropylene resin wherein the mica has a coating comprising chlorinated aliphatic hydrocarbon comprising about 65-80% by weight chlorine, which method comprises: (A) providing the resin, rendered molten by a first shear and having a melt index below about 12, at a temperature in the range about 10°-60°F. below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon coating; (B) contacting the molten mass with the coated mica; (C) kneading the molten mass and the coated mica under a second shear, lower than the first shear, at a temperature below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon.
Claim 11
Independent Claim
119 words
A method of compounding in less than about 15 seconds at elevated temperature mica and polypropylene resin wherein the mica has a coating comprising chlorinated aliphatic hydrocarbon comprising about 65-80% by weight chlorine, which method comprises: (A) providing the resin, rendered molten by a first shear and having a melt index below about 12, at a temperature in the range about 10°-60°F. below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon coating; (B) contacting the molten mass with the coated mica; (C) kneading the molten mass and the coated mica under a second shear, lower than the first shear, at a temperature below that temperature at which chlorine containing gas evolves from the chlorinated hydrocarbon.
Claim 12
Dependent Claim
22 words
A method in accordance with claim 8, wherein the molten mass in step (A) is at a temperature between about 435°-455° F.
Claim 13
Dependent Claim
17 words
A method in accordance with claim 9, wherein the temperature of (C) is below about 480° F.
Claim 14
Independent Claim
27 words
A method in accordance with claims 8 or 9 or 10, wherein the melt index (ASTM 1238) of the molten mass in (A) is below about 10.
Claim 15
Dependent Claim
20 words
A method in accordance with claim 17, wherein the polypropylene resin has a melt index between about 2 and 6.
Claim 16
Dependent Claim
13 words
A method in accordance with claim 12, wherein the mica comprises phlogopite mica.
Claim 17
Independent Claim
17 words
A method in accordance with claims 8 or 9, wherein the chlorinated hydrocarbon is a chlorinated wax.
Claim 18
Dependent Claim
18 words
A method in accordance with claim 14, wherein the chlorinated wax has between about 70-78% by weight chlorine.
Claim 19
Dependent Claim
20 words
A method in accordance with claim 15, wherein the polypropylene resin has a melt index between about 2 and 6.
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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |