US4304699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounding mica and resin with particulate heat sensitive additives
Assignee: Ford Motor Co
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Filing: 1979-12-13
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Granted: 1981-12-08
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Expires: 1999-12-13
Abstract
Abstract A method of rapidly compounding melt forming resin (such as polypropylene) mica, and heat sensitive additives, such as chlorinated waxes, which comprises providing a molten mass of the resin, introducing the mica and heat sensitive additive into the molten resin and kneading the so introduced mica and additive to provide admixture 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
2026-10-29 14:17
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/201; B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; C08K; C08K9/00; C08K9/10; B29C48/03; B29C48/05; B29K; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
125 words
A method of rapidly compounding mica, additive and melt forming resin made from monomers comprising olefinic hydrocarbon monomers wherein the mica is intimately admixed with heat sensitive additive comprising chlorinated hydrocarbon wax to form a particulate blend, which method comprises: (A) providing the resin, rendered molten by a first shear, at a temperature in the range of about 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon; (B) contacting the molten mass of resin with said particulate blend; (C) kneading the molten mass of resin and the particulate blend so contacted under a second shear lower than said first shear, at a temperature below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon.
Claim 2
Independent Claim
125 words
A method of rapidly compounding mica, additive and melt forming resin made from monomers comprising olefinic hydrocarbon monomers wherein the mica is intimately admixed with heat sensitive additive comprising chlorinated hydrocarbon wax to form a particulate blend, which method comprises: (A) providing the resin, rendered molten by a first shear, at a temperature in the range of about 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon; (B) contacting the molten mass of resin with said particulate blend; (C) kneading the molten mass of resin and the particulate blend so contacted under a second shear lower than said first shear, at a temperature below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon.
Claim 3
Dependent Claim
24 words
The method in accordance with claim 1, wherein the melt forming resin comprises polypropylene and the chlorinated wax comprises about 65-80% 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
163 words
A continuous method for compounding at elevated temperature in less than about 30 seconds mica, heat sensitive additive and melt forming resin made from monomers comprising olefinic aliphatic hydrocarbon monomers wherein the heat sensitive additive comprises a chlorinated hydrocarbon wax 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 particulates comprising the mica intimately admixed with the additive comprising chlorinated hydrocarbon; and (C) kneading the resin and particulates to provide a mixing thereof at a temperature which below that temperature at which chlorine gas would evolve from the additive.
Claim 8
Dependent Claim
163 words
A continuous method for compounding at elevated temperature in less than about 30 seconds mica, heat sensitive additive and melt forming resin made from monomers comprising olefinic aliphatic hydrocarbon monomers wherein the heat sensitive additive comprises a chlorinated hydrocarbon wax 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 particulates comprising the mica intimately admixed with the additive comprising chlorinated hydrocarbon; and (C) kneading the resin and particulates 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
24 words
The method in accordance with claim 6, wherein the resin comprises polypropylene and the additive comprises chlorinated wax having about 70-78% by weight chlorine.
Claim 10
Independent Claim
151 words
A method of compounding in less than about 30 seconds at elevated temperature mica and melt forming resin made from monomers comprising olefinic hydrocarbon monomers, wherein said mica and a heat sensitive additive comprising chlorinated hydrocarbon wax are intimately admixed to provide a blend, which method comprises: (A) providing said resin, rendered molten by a first shear and having a melt index (ASTM D1238) below about 15, at a temperature in the range of 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from said 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 blend into the turbulence; and (C) kneading the blend 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 additive.
Claim 11
Independent Claim
151 words
A method of compounding in less than about 30 seconds at elevated temperature mica and melt forming resin made from monomers comprising olefinic hydrocarbon monomers, wherein said mica and a heat sensitive additive comprising chlorinated hydrocarbon wax are intimately admixed to provide a blend, which method comprises: (A) providing said resin, rendered molten by a first shear and having a melt index (ASTM D1238) below about 15, at a temperature in the range of 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from said 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 blend into the turbulence; and (C) kneading the blend 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 additive.
Claim 12
Independent Claim
131 words
A method of compounding in less than about 15 seconds at elevated temperature mica and polypropylene resin wherein the mica is intimately admixed with an additive comprising chlorinated hydrocarbon wax having between about 65-80% by weight chlorine to provide a blend, which method comprises: (A) providing said resin, rendered molten by a first shear and having a melt index below about 12, at a temperature in the range of about 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from the chlorinated wax; (B) contacting the molten mass of resin with said blend; (C) kneading said molten mass and said blend under a second shear, lower than said first shear, at a temperature below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon.
Claim 13
Independent Claim
131 words
A method of compounding in less than about 15 seconds at elevated temperature mica and polypropylene resin wherein the mica is intimately admixed with an additive comprising chlorinated hydrocarbon wax having between about 65-80% by weight chlorine to provide a blend, which method comprises: (A) providing said resin, rendered molten by a first shear and having a melt index below about 12, at a temperature in the range of about 10° F. to 60° F. below that temperature at which chlorine containing gas evolves from the chlorinated wax; (B) contacting the molten mass of resin with said blend; (C) kneading said molten mass and said blend under a second shear, lower than said first shear, at a temperature below that temperature at which chlorine containing gas evolves from said chlorinated hydrocarbon.
Claim 14
Dependent Claim
25 words
A method in accordance with claim 9, wherein the molten mass of resin in step (A) is at a temperature between about 435° F.-455° F.
Claim 15
Dependent Claim
17 words
A method in accordance with claim 10, wherein the temperature of (C) is below about 480° F.
Claim 16
Independent Claim
26 words
A method in accordance with claims 9, 10, or 11 wherein the melt index (ASTM D1238) of the molten mass in (A) is below about 10.
Claim 17
Dependent Claim
20 words
A method in accordance with claim 12, wherein the polypropylene resin has a melt index between about 2 and 6.
Claim 18
Dependent Claim
13 words
A method in accordance with claim 13, wherein the mica comprises phlogopite mica.
Claim 19
Independent Claim
19 words
A method in accordance with claims 9 or 10, wherein the chlorinated hydrocarbon wax comprises between about 70-78% chlorine.
Claim 20
Dependent Claim
18 words
A method in accordance with claim 15, wherein the polypropylene resin has a melt index between about 2-6.
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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |