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US4081502A
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US
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Process for the production of homogeneous, bar-shaped or granular thermoplastic compositions
Assignee: Huels AG
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Filing: 1975-10-17
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Granted: 1978-03-28
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Expires: 1995-10-17
Abstract
Abstract A process for the production of a thermoplastic composition comprising a homogeneous blend of (I) 100 PARTS BY WEIGHT OF A SATURATED OR UNSATURATED POLYOLEFIN ELASTOMER HAVING A GREEN POLYMER TENSILE STRENGTH OF AT LEAST 20 KP./CM2 AT 25 DEG C. and a viscosity of 20-150 Mooney units (ML1+4 at 100 DEG C.
Inventors
- 👤 Harald Blumel
- 👤 Paul Lipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:15
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/18; C08K3/24; C08K3/26; C08L23/04; C08L23/06; C08L23/16; C08L91/00; C08L95/00; C08L53/00; C08L53/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
149 words
A process for the production of a thermoplastic composition comprising a homogeneous blend of (i) 100 parts by weight of a saturated or unsaturated block polyolefin elastomer having a green polymer tensile strength of at least 20 and up to 220 kp./cm 2 at 25° C. and a viscosity of 20-150 Mooney units (ML 1+4 at 100° C.) and (ii) 25-900 parts by weight of bitumen, which comprises: (a) kneading bitumen with crumbs, granules or powders of said elastomer in a kneader at a temperature of about 50°-220° C. for about 1-100 minutes to form a viscous, homogeneous composition; (b) after homogenization is effected, cooling the resultant composition sufficiently to minimize the adhesion to the inner wall and rotor of the kneader which adhesion in the absence of said cooling frequently prevents ejection of the composition; and (c) ejecting at least 95% of the cooled composition from the kneader.
Claim 2
Dependent Claim
149 words
A process for the production of a thermoplastic composition comprising a homogeneous blend of (i) 100 parts by weight of a saturated or unsaturated block polyolefin elastomer having a green polymer tensile strength of at least 20 and up to 220 kp./cm 2 at 25° C. and a viscosity of 20-150 Mooney units (ML 1+4 at 100° C.) and (ii) 25-900 parts by weight of bitumen, which comprises: (a) kneading bitumen with crumbs, granules or powders of said elastomer in a kneader at a temperature of about 50°-220° C. for about 1-100 minutes to form a viscous, homogeneous composition; (b) after homogenization is effected, cooling the resultant composition sufficiently to minimize the adhesion to the inner wall and rotor of the kneader which adhesion in the absence of said cooling frequently prevents ejection of the composition; and (c) ejecting at least 95% of the cooled composition from the kneader.
Claim 3
Dependent Claim
33 words
A process according to claim 1, wherein said thermoplastic composition further comprises up to 25% by weight, based on the weight of the elastomer, of a polyolefin homopolymer of ethylene, propylene or butene.
Claim 4
Dependent Claim
62 words
A process according to claim 2, wherein said thermoplastic composition further comprises up to 25% by weight, based on the weight of the elastomer, of an additional elastomer selected from the group consisting of natural rubber, styrene-butadiene rubber, polychloroprene rubber, acrylonitrile-butadiene rubber, polybutadiene rubber, polyisoprene rubber, butyl rubber, random-polymerized ethylene-α-olefin rubbers, and ethylene-vinyl acetate or -acrylic acid or -acrylic acid ester copolymers.
Claim 5
Dependent Claim
19 words
A process according to claim 3, wherein said random-polymerized ethylene-α-olefin rubbers are selected from EPM, EPDM and mixtures thereof.
Claim 6
Dependent Claim
36 words
A process according to claim 1, wherein said elastomer consists essentially of 15-90% by weight of ethylene and correspondingly 85-10% by weight of at least one member selected from the group consisting of propylene and butene-1.
Claim 7
Dependent Claim
15 words
A process according to claim 5, wherein said elastomer is an olefinically saturated sequence copolymer.
Claim 8
Dependent Claim
28 words
A process according to claim 5, wherein said elastomer further comprises an unconjugated multiolefin in an amount sufficient to provide 0.5-30 olefinically unsaturated bonds per 1000 carbon atoms.
Claim 9
Dependent Claim
22 words
A process according to claim 7, wherein said multiolefin is selected from the group consisting of 1,4-hexadiene, dicyclopentadiene, methylene-, ethylidene- or propenyl-norbornene.
Claim 10
Dependent Claim
26 words
A process according to claim 5, wherein said elastomer has a green polymer tensile strength of 50-190 kp./cm 2 and a viscosity of 40-100 Mooney units.
Claim 11
Dependent Claim
17 words
A process according to claim 1, wherein said bitumen is a primary bitumen or a blown bitumen.
Claim 12
Dependent Claim
17 words
A process according to claim 10, wherein said bitumen is B 80, B 200 or B 100/25.
Claim 13
Dependent Claim
36 words
A process according to claim 10, wherein said elastomer consists essentially of 15-90% by weight of ethylene and correspondingly 85-10% by weight of at least one member selected from the group consisting of propylene and butene-1.
Claim 14
Dependent Claim
26 words
A process according to claim 12, wherein said elastomer has a green polymer tensile strength of 50-190 kp./cm 2 and a viscosity of 40-100 Mooney units.
Claim 15
Dependent Claim
24 words
A process according to claim 1, wherein said homogeneous blend further comprises an amount of up to 500 parts by weight of a filler.
Claim 16
Dependent Claim
23 words
A process according to claim 1, wherein said homogeneous further comprises an amount of up to 50 parts by weight of a plasticizer.
Claim 17
Dependent Claim
100 words
A process according to claim 2, wherein said elastomer consists essentially of 15-90% by weight of ethylene and correspondingly 85-10% by weight of at least one member selected from the group consisting of propylene and butene-1, having a green polymer tensile strength of 50-190 kp./cm 2 and a viscosity of 40-100 Mooney units; said bitumen is a primary bitumen or a blown bitumen; said admixture is effected in a coolable internal mixer with a plunger at a batch temperature of 80°-100° C. and a rotor speed of 5-100 r.p.m. for 5-30 minutes and the resultant composition cooled for 1-30 minutes.
Claim 18
Dependent Claim
25 words
A process according to claim 1, further comprising forming the resultant composition into bars or granules and applying an anticaking agent to the surface thereof.
Claim 19
Dependent Claim
20 words
A process according to claim 1, wherein said composition consists essentially of elastomeric material, bitumen, and optionally filler and plasticizer.
References Cited (Backward Citations)
US3963659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |