US4467077A
Expired / Lapsed
US
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Mica filled polyolefin resin composites
Assignee: CABLE TECHNOLOGY LABORATORIES Inc A CORP OF NJ
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Filing: 1981-03-02
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Granted: 1984-08-21
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Expires: 2001-03-02
Abstract
Abstract Mica filled polyolefin resin composites exhibit improved mechanical properties if the mica filler and polyolefin resin are specially combined with additives comprising chlorinated aliphatic compounds. The composites are preferably made from blends comprising about 1-36 parts by weight mica flakes (especially phlogopite mica), 9 parts by weight propylene resin and minor effective amounts of the additive. Various processing techniques such as selecting the time the blends reside at melt temperatures during compounding permits development of advantageous properties.
Inventors
- 👤 Fred J. Meyer
- 👤 Seymour Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
C; C07; C07D; C07D519/00; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
119 words
A silane-free composite made by a process which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the combined weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight of about 250-10,000 and about 5-80% chlorine by weight; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 2
Dependent Claim
119 words
A silane-free composite made by a process which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the combined weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight of about 250-10,000 and about 5-80% chlorine by weight; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 3
Dependent Claim
29 words
A composite made according to claim 1, wherein the resin comprises one or more selected from the group consisting of polyethylene, polypropylene, copolymers comprising ethylene, propylene and mixtures thereof.
Claim 4
Dependent Claim
12 words
A composite made according to claim 1, wherein the resin comprises polypropylene.
Claim 5
Dependent Claim
19 words
A composite made according to claim 1, wherein the mica comprises biotite, phlogopite or muscovite mica or mixtures thereof.
Claim 6
Dependent Claim
13 words
A composite made according to claim 4, wherein the mica comprises phlogopite mica.
Claim 7
Dependent Claim
23 words
A composite made according to claim 5, wherein the molecular weight of the chlorinated aliphatic hydrocarbons is in a range of about 800-5,000.
Claim 8
Dependent Claim
23 words
A composite made according to claim 5, wherein the additive consists essentially of resinous chlorinated paraffin wax having about 60-80% by weight chlorine.
Claim 9
Dependent Claim
29 words
A composite made according to claim 7, wherein the resin comprises one or more selected from the group consisting of polyethylene, polypropylene, copolymers comprising propylene, ethylene and mixtures thereof.
Claim 10
Dependent Claim
12 words
A composite made according to claim 8, wherein the resin comprises polypropylene.
Claim 11
Dependent Claim
26 words
A composite made according to claim 9, wherein the additive comprises from about 0.2-3% by weight of the combined weight of the mica filler and resin.
Claim 12
Dependent Claim
38 words
A composite made according to claim 10, wherein the weight ratio of mica to resin is about 5:2-2:5 and the melt is maintained for at least about five minutes at a temperature of at least about 170° C.
Claim 13
Dependent Claim
31 words
A composite made according to claim 1 wherein said mica in (A) has been combined with the additive to provide a coating on at least a portion of the mica particles.
Claim 14
Dependent Claim
23 words
A composite according to claim 12, wherein the additive consists essentially of a resinous chlorinated hydrocarbon having between about 60-80% by weight chlorine.
Claim 15
Dependent Claim
55 words
A composite according to claim 13, wherein the mica and the resinous chlorinated hydrocarbon having between about 60-80% by weight chlorine are combined by heating at a temperature above the melting temperature of the resinous chlorinated hydrocarbon to provide a coating on at least a portion of the mica particles and the resin comprises polypropylene.
Claim 16
Dependent Claim
32 words
A composite according to claim 14, wherein the mica and additive consisting essentially of one or more chlorinated aliphatic compounds are combined at a temperature above the melting temperature of the additive.
Claim 17
Dependent Claim
137 words
A silane-free composite made by a process which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 18
Dependent Claim
137 words
A silane-free composite made by a process which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 19
Dependent Claim
30 words
A composite made according to claim 2, wherein the chlorinated aliphatic hydrocarbons comprise resinous chlorinated paraffin wax having a molecular weight between about 800-5,000 and about 60-80% by weight chlorine.
Claim 20
Dependent Claim
20 words
A composite made according to claim 17, wherein the additive comprises up to about 15% by weight of the mica.
Claim 21
Dependent Claim
18 words
A composite made according to claim 18, wherein the weight ratio of mica to resin is about 5:2-2:5.
Claim 22
Dependent Claim
137 words
A process for making a silane-free composite which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 23
Dependent Claim
137 words
A process for making a silane-free composite which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 24
Dependent Claim
28 words
A process according to claim 20, wherein the resin comprises one or more selected from the group consisting of polyethylene, polypropylene, copolymers comprising ethylene, propylene and mixtures thereof.
Claim 25
Dependent Claim
11 words
A process according to claim 20, wherein the resin comprises polypropylene.
Claim 26
Dependent Claim
19 words
A process according to claim 20, wherein the mica filler comprises biotite, phlogopite or muscovite micas or mixtures thereof.
Claim 27
Dependent Claim
12 words
A process according to claim 23, wherein the mica comprises phlogopite mica.
Claim 28
Dependent Claim
22 words
A process according to claim 24, wherein the molecular weight of the chlorinated aliphatic hydrocarbons is in a range of about 800-5,000.
Claim 29
Dependent Claim
21 words
A process according to claim 24, wherein the additive consists essentially of resinous chlorinated paraffin wax having about 60-80% by weight.
Claim 30
Dependent Claim
28 words
A process according to claim 26, wherein the resin comprises one or more selected from the group consisting of polyethylene, polypropylene, copolymers comprising propylene, ethylene and mixtures thereof.
Claim 31
Dependent Claim
11 words
A process according to claim 27; wherein the resin comprises polypropylene.
Claim 32
Dependent Claim
24 words
A process according to claim 28, wherein the additive comprises from about 0.2-3% by weight of the combined weight of the mica and resin.
Claim 33
Dependent Claim
37 words
A process according to claim 29, wherein the weight ratio of mica to resin is about 5:2-2:5 and the melt is maintained for at least about five minutes at a temperature of at least about 170° C.
Claim 34
Dependent Claim
34 words
A process according to claim 20, which comprises conjoining the resin with particulate mica that has been combined with the additive to provide a coating on at least a portion of the mica particles.
Claim 35
Dependent Claim
23 words
A process according to claim 31, wherein the additive consists essentially of a resinous chlorinated hydrocarbon having between about 60-80% by weight chlorine.
Claim 36
Dependent Claim
55 words
A process according to claim 32, wherein the mica and the resinous chlorinated hydrocarbon having between about 60-80% by weight chlorine are combined by heating at a temperature above the melting temperature of the resinous chlorinated hydrocarbon to provide a coating on at least a portion of the mica particles and the resin comprises polypropylene.
Claim 37
Dependent Claim
32 words
A process according to claim 33, wherein the mica and additive consisting essentially of one or more chlorinated aliphatic compounds are combined at a temperature above the melting temperature of the additive.
Claim 38
Dependent Claim
137 words
A process for making a silane-free composite, which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 39
Dependent Claim
137 words
A process for making a silane-free composite, which comprises: A. providing a blend consisting essentially of melt forming resin made from monomers comprising olefinic hydrocarbon monomers, mica and a strengthening amount of an additive that is a minor amount by weight of the resin and mica, the additive consisting essentially of one or more chlorinated aliphatic compounds having a molecular weight between about 250-10,000 and about 5-80% by weight chlorine and wherein the mica is combined with the additive to provide a coating on at least a portion of the mica particles; B. maintaining the silane-free blend of step A as a melt at a temperature in a range between about 170°-300° C. for a time sufficient to strengthen the composite; and C. cooling said silane-free blend to a temperature below the softening point of said composite.
Claim 40
Dependent Claim
29 words
A process according to claim 35, wherein the chlorinated aliphatic hydrocarbons comprise resinous chlorinated paraffin wax having a molecular weight between about 800-5,000 and about 60-80% by weight chlorine.
Claim 41
Dependent Claim
19 words
A process according to claim 36, wherein the additive comprises up to about 15% by weight of the mica.
Claim 42
Dependent Claim
17 words
A process according to claim 37, wherein the weight ratio of mica to resin is about 5:2-2:5.
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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |