US3852225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer composition having high flow property
Assignee: JSR Corp
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Filing: 1973-12-11
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Granted: 1974-12-03
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Expires: 1993-12-11
Abstract
Abstract A polymer composition having a high flow property is obtained by incorporating 1 to 200 parts by weight of a filler and up to 200 parts by weight of a process oil into 100 parts by weight of a polymer component consisting of at least one polybutadiene having a 1,2-addition unit content of 70 percent or higher, a crystallinity of 5 to 50 percent, and an intrinsic viscosity ( Eta ) (as measured in toluene at 30* C.) of 0.7 dl/g or higher, or a polymer component consisting of a major amount of at least one said polybutadiene and a minor amount of a rubbery polymer co-vulcanizable therewith.
Inventors
- 👤 N Ishikawa
- 👤 S Suzuki
- 👤 Y Ougusa
- 👤 K Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
C; C08; C08L; C08L9/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A POLYMER COMPOSITION HAVING A HIGH FLOW PROPERTY, WHICH COMPRISES 100 PARTS BY WEIGHT OF A POLYMER COMPONENT CONSISTING OF AT LEAST ONE POLUBUTADIENE HAVING A 1,2-ADDITION UNIT CONTENT OF 70 PERCENT O HIGHER, A CRYSTALLINITY OF 5 TO 50 PERCENT, AND AN INTRINSIC VISCOSITY OF 0.7 DL/G OR HIGHER AS MEASURED, IN TOLUENE AT 30:C OR A POLYMER COMPONENT CONSISTING OF A MAJOR AMOUNT OF AT LEAST ONE SAID POLYBUTADIENE AND A MINOR AMOUNT OF A RUBBERY POLYMER CO-VULCANIZABLE THEREWITH; 1 TO 200 PARTS BY WEIGHT OF A FILLER; AND UP TO 200 PARTS BY WEIGHT OF A PROCESS OIL.
Claim 2
Dependent Claim
101 words
A POLYMER COMPOSITION HAVING A HIGH FLOW PROPERTY, WHICH COMPRISES 100 PARTS BY WEIGHT OF A POLYMER COMPONENT CONSISTING OF AT LEAST ONE POLUBUTADIENE HAVING A 1,2-ADDITION UNIT CONTENT OF 70 PERCENT O HIGHER, A CRYSTALLINITY OF 5 TO 50 PERCENT, AND AN INTRINSIC VISCOSITY OF 0.7 DL/G OR HIGHER AS MEASURED, IN TOLUENE AT 30:C OR A POLYMER COMPONENT CONSISTING OF A MAJOR AMOUNT OF AT LEAST ONE SAID POLYBUTADIENE AND A MINOR AMOUNT OF A RUBBERY POLYMER CO-VULCANIZABLE THEREWITH; 1 TO 200 PARTS BY WEIGHT OF A FILLER; AND UP TO 200 PARTS BY WEIGHT OF A PROCESS OIL.
Claim 3
Dependent Claim
20 words
A polymer composition according to claim 1, wherein the polybutadiene has a 1,2-addition unit content of 85 percent or higher.
Claim 4
Dependent Claim
18 words
A polymer composition according to claim 1, wherein the polybutadiene has a crystallinity of 10 to 30 percent.
Claim 5
Dependent Claim
25 words
A polymer composition according to claim 1, wherein the polybutadiene has an intrinsic viscosity of 1.0 dl/g or higher as measured in toluene at 30*C.
Claim 6
Dependent Claim
42 words
A polymer composition according to claim 1, wherein the polybutadiene has a 1,2-addition unit content of 85 percent or higher, a crystallinity of 10 to 30 percent and an intrinsIc viscosity of 1.0 dl/g or higher as measured in toluene at 30*C.
Claim 7
Dependent Claim
49 words
A polymer composition according to claim 1, wherein the polymer component consists of at least one polybutadiene having a 1,2-addition unit content of 70 percent or higher, a crystallinity of 5 to 50 percent and an intrinsic viscosity of 0.7 dl/g or higher as measured in toluene at 30*C.
Claim 8
Dependent Claim
46 words
A polymer composition according to claim 1, wherein the rubbery polymer is selected from the group consisting of styrene-butadiene copolymer rubbers, polybutadiene rubbers, polyisoprene rubbers, ethylene-propylene copolymer rubbers, ethylene-propylene-diene terpolymer rubbers, amorphous 1,2-polybutadiene or 1,2-polybutadiene having a crystallinity of less than 5 percent, and natural rubber.
Claim 9
Dependent Claim
29 words
A polymer composition according to claim 1, wherein the polymer component contains at least 1 percent by weight but less than 50 percent by weight of the rubbery polymer.
Claim 10
Dependent Claim
29 words
A polymer composition according to claim 8, wherein the amount of the rubbery polymer is 5 to 40 percent by weight based on the weight of the polymer component.
Claim 11
Dependent Claim
18 words
A polymer composition according to claim 1, wherein the filler is carbon black or finely powdered anhydrous silica.
Claim 12
Dependent Claim
43 words
A polymer composition according to claim 1, wherein the filler is selected from the group consisting of calcium carbonate, calcium silicate, magnesium carbonate, magnesium oxide, titanium oxide, zinc oxide, clay, alumina, talc, and calcium carbonate surface-cated with a fatty acid or resin acid.
Claim 13
Dependent Claim
20 words
A polymer composition according to claim 1, wherein the amount of the filler is 10 to 100 parts by weight.
Claim 14
Dependent Claim
9 words
A vulcanized product of the composition according to claim
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |