US3923731A
Expired / Lapsed
US
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Pressureless curing of filled ethylene containing polymeric compositions
Assignee: Vulkor Inc
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Filing: 1973-06-21
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Granted: 1975-12-02
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Expires: 1993-06-21
Abstract
Abstract A method for curing mineral filled, ethylene-containing polymeric compositions with heat and without applying high pressures, which produces relatively dense and substantially nonporous cured polymeric products. The method comprises the addition of an organic titanate to a curable, mineral filled polymeric composition, and heat curing the composition at approximately ambient atmospheric pressures.
Inventors
- 👤 Jr Burton Thornley Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:56
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08K5/14; H01B3/308; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
155 words
A METHOD OF CURING A POLYMERIC COMPOSITION COMPRISING POLYMERIZED ETHYLENE AND MINERAL FILLER, TO A RELATIVELY DENSE AND SUBSTANTIALLY NONPORUS CURED PRODUCT WITHOUT THE APPLICATION OF HIGH PRESSURE DURING CURING, COMPRISING THE STEPS OF: A PREPARING A CURABLE POLYMERIC COMPOSITION BY MIXING THE INGREDIENTS THEREOF COMPRISING: AN EHTYLENE-CONTAINING POLYMER, MINERAL FILLER IN AN AMOUNT OF AT LEAST ABOUT 15 PARTS BY WEIGHT PER 100 PARTS OF THE POLYMER, PEROXIDE CURING AGENT, AND AT LEAST ONE ORGANIC TITANATE SELECTED FROM THE GROUP CONSISTING OF TETRAKIS (2-ETHYLHEXYL) TITANATE, TETRABUTYL TITANATE, AND A MIXED ALKYL TITANATE COMPRISING ABOUT 85 PARTS ISOPROPYL C3 BY WEIGHT AND ABOUT 15 PARTS STEARYL C18 BY WEIGHT IN AN AMOUNT OF ABOUT 2 TO 10 PARTS BY WEIGHT PER 100 PARTS OF MINERAL FILLER; AND, B. HEATING THE PREPARED CURABLE POLYMERIC COMPOSITION UNDER SUBSTANTIALLY AMBIENT ATMOSPHERIC PRESSURE CONDITIONS AND THEREBY CURING SAID POLYMERIC COMPOSITION TO A RELATIVELY DENSE AND SUBSTANTIALLY NON-POROUS CURED PRODUCT.
Claim 2
Independent Claim
155 words
A METHOD OF CURING A POLYMERIC COMPOSITION COMPRISING POLYMERIZED ETHYLENE AND MINERAL FILLER, TO A RELATIVELY DENSE AND SUBSTANTIALLY NONPORUS CURED PRODUCT WITHOUT THE APPLICATION OF HIGH PRESSURE DURING CURING, COMPRISING THE STEPS OF: A PREPARING A CURABLE POLYMERIC COMPOSITION BY MIXING THE INGREDIENTS THEREOF COMPRISING: AN EHTYLENE-CONTAINING POLYMER, MINERAL FILLER IN AN AMOUNT OF AT LEAST ABOUT 15 PARTS BY WEIGHT PER 100 PARTS OF THE POLYMER, PEROXIDE CURING AGENT, AND AT LEAST ONE ORGANIC TITANATE SELECTED FROM THE GROUP CONSISTING OF TETRAKIS (2-ETHYLHEXYL) TITANATE, TETRABUTYL TITANATE, AND A MIXED ALKYL TITANATE COMPRISING ABOUT 85 PARTS ISOPROPYL C3 BY WEIGHT AND ABOUT 15 PARTS STEARYL C18 BY WEIGHT IN AN AMOUNT OF ABOUT 2 TO 10 PARTS BY WEIGHT PER 100 PARTS OF MINERAL FILLER; AND, B. HEATING THE PREPARED CURABLE POLYMERIC COMPOSITION UNDER SUBSTANTIALLY AMBIENT ATMOSPHERIC PRESSURE CONDITIONS AND THEREBY CURING SAID POLYMERIC COMPOSITION TO A RELATIVELY DENSE AND SUBSTANTIALLY NON-POROUS CURED PRODUCT.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the mineral filler is present in amount of about 15 to 200 parts by weight per 100 parts of the polymeric contents.
Claim 4
Dependent Claim
28 words
The method of claim 2, wherein the organic titanate is present in an amount of about 4 to 8 parts by weight per 100 parts of mineral filler.
Claim 5
Dependent Claim
39 words
The method of claim 3, wherein the ethylene-containing polymer is selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymer of ethylene and propylene, terpolymers of ethylene and propylene with a diene, and mixture thereof.
Claim 6
Dependent Claim
34 words
The method of claim 4, wherein the mineral filler is selected from the group consisting of aluminum silicate, aluminum oxide, calcium silicate, magnesium silicate, magnesium oxide, titanium dioxide, silica, and glass, and mixture thereof.
Claim 7
Dependent Claim
27 words
The method of claim 5, wherein the mineral filler is present in amount of about 25 to 150 parts by weight per 100 parts of polymeric contents.
Claim 8
Dependent Claim
11 words
The method of claim 6, wherein the ethylene-containing polymer is polyethylene.
Claim 9
Dependent Claim
11 words
The method of claim 7, wherein the mineral filler is clay.
Claim 10
Dependent Claim
15 words
The method of claim 8, wherein the peroxide curing agent is a tertiary organic peroxide.
Claim 11
Independent Claim
209 words
A method of curing a polymeric composition comprising polymerized ethylene and mineral filler, to a relatively dense and substantially non-porous cured product without the application of high pressure during curing, comprising the steps of: a. preparing a curable polymeric composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixture thereof; a tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 15 to 200 parts per 100 parts of the ethylene-containing polymer, and at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts per 100 parts of mineral filler; and, b. heating the prepared curable polymeric composition under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured product.
Claim 12
Independent Claim
209 words
A method of curing a polymeric composition comprising polymerized ethylene and mineral filler, to a relatively dense and substantially non-porous cured product without the application of high pressure during curing, comprising the steps of: a. preparing a curable polymeric composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixture thereof; a tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 15 to 200 parts per 100 parts of the ethylene-containing polymer, and at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts per 100 parts of mineral filler; and, b. heating the prepared curable polymeric composition under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured product.
Claim 13
Independent Claim
206 words
A method of curing a polymeric composition comprising polymerized ethylene and mineral filler, to a relatively dense and substantially non-porous cured product without the application of high pressure during curing, comprising the steps of: a. preparing a curable polymeric composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof; tertiary organic peroxide in an amount of about 2 to 5 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 25 to 150 parts per 100 parts of the ethylene-containing polymer; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 4 to 8 parts per 100 parts of mineral filler; and, b. heating the prepared curable polymeric composition under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured product.
Claim 14
Independent Claim
206 words
A method of curing a polymeric composition comprising polymerized ethylene and mineral filler, to a relatively dense and substantially non-porous cured product without the application of high pressure during curing, comprising the steps of: a. preparing a curable polymeric composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof; tertiary organic peroxide in an amount of about 2 to 5 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 25 to 150 parts per 100 parts of the ethylene-containing polymer; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 4 to 8 parts per 100 parts of mineral filler; and, b. heating the prepared curable polymeric composition under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured product.
Claim 15
Dependent Claim
100 words
A filled polymeric composition comprising in approximate parts by weight: an ethylene-containing polymer in an amount of 100 parts; mineral filler in an amount of about 15 to 200 parts; peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 16
Dependent Claim
100 words
A filled polymeric composition comprising in approximate parts by weight: an ethylene-containing polymer in an amount of 100 parts; mineral filler in an amount of about 15 to 200 parts; peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 17
Dependent Claim
33 words
The filled polymeric composition of claim 12, wherein the organic titanate is present in an amount of about 2 to 4 parts by weight per 100 parts by weight of the mineral filler.
Claim 18
Dependent Claim
153 words
A filled polymeric composition comprising in approximate parts by weight: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylEne and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof in an amount of 100 parts; at least one mineral filler selected from the group consisting of aluminum silicate, aluminum oxide, calcium silicate, magnesium silicate, magnesium oxide, titanium dioxide, silica, and glass in an amount of 15 to 200 parts; tertiary organic peroxide curing agent in amount of 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 19
Dependent Claim
153 words
A filled polymeric composition comprising in approximate parts by weight: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylEne and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof in an amount of 100 parts; at least one mineral filler selected from the group consisting of aluminum silicate, aluminum oxide, calcium silicate, magnesium silicate, magnesium oxide, titanium dioxide, silica, and glass in an amount of 15 to 200 parts; tertiary organic peroxide curing agent in amount of 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 20
Dependent Claim
11 words
The relatively dense and substantially non-porous cured product of claim 14.
Claim 21
Dependent Claim
99 words
A filled polymeric composition comprising in approximate parts by weight: polyethylene in an amount of 100 parts; mineral filler in an amount of about 15 to 150 parts; tertiary organic peroxide curing agent in an amount of 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 22
Dependent Claim
99 words
A filled polymeric composition comprising in approximate parts by weight: polyethylene in an amount of 100 parts; mineral filler in an amount of about 15 to 150 parts; tertiary organic peroxide curing agent in an amount of 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C3 by weight and about 15 parts stearyl C18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 23
Dependent Claim
11 words
The relatively dense and substantially non-porous cured product of claim 16.
References Cited (Backward Citations)
US3079370A
Cited
US3660134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |