US3886127A
Expired / Lapsed
US
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Alkali metalated acetylene-conjugated diene random copolymer
Assignee: Bridgestone Corp
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Filing: 1974-09-09
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Granted: 1975-05-27
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Expires: 1994-09-09
Abstract
Abstract An alkali metalated acetylene-conjugated diene random copolymer obtained by reacting an acetylene-conjugated diene random copolymer having an acetylene unit content of 5-60 mol% and a block character P of 0.8-1.2 with an alkali metal or an organo alkali metal compound. The alkali metalated copolymer can be used as a starting material of functional polymers, graft polymers with vinyl monomers and monomer addition products, which are useful raw materials for the production of coating compositions, adhesives, reactive softeners and other industrial materials.
Inventors
- 👤 Junji Furukawa
- 👤 Eiichi Kobayashi
- 👤 Takahiro Kawagoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08C; C08C19/00; C08C19/26; C08F8/00; C08F8/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
AN ALKALI METALATED ACETYLENE-CONJUGATED DIENE RANDOM COPOLYMER OBTAINED BY REACTING AN ACETYLENE-CONJUGATED DIENE RANDOM COPOLYMER HAVING AN ACETYLENE UNIT CONTENT OF 5-60 MOL % AND A BLOCK CHARACTER P OF 0.8-1.2 WITH AN ALKALI METAL OR AN ALKALI METAL HHYDROCARBON COMPOUND IN A SOLVENT AT A TEMPERATURE OF -100 - + 100:C UNDER AN INERT GAS ATMOSPHERE.
Claim 2
Dependent Claim
57 words
AN ALKALI METALATED ACETYLENE-CONJUGATED DIENE RANDOM COPOLYMER OBTAINED BY REACTING AN ACETYLENE-CONJUGATED DIENE RANDOM COPOLYMER HAVING AN ACETYLENE UNIT CONTENT OF 5-60 MOL % AND A BLOCK CHARACTER P OF 0.8-1.2 WITH AN ALKALI METAL OR AN ALKALI METAL HHYDROCARBON COMPOUND IN A SOLVENT AT A TEMPERATURE OF -100 - + 100:C UNDER AN INERT GAS ATMOSPHERE.
Claim 3
Dependent Claim
15 words
A copolymer according to claim 1, wherein said alkali metal is lithium, sodium or potassium.
Claim 4
Dependent Claim
14 words
A copolymer according to claim 1, wherein said alkali metal is lithium or sodium.
Claim 5
Dependent Claim
45 words
A copolymer according to claim 1, wherein said alkali metal hydrocarbon compound has the following general formula: RMn wherein R represents a hydrocarbon residue having 1-20 carbon atoms; M represents a lithium, sodium, potassium, rubidium or cesium atom and n is an integer of 1-4.
Claim 6
Dependent Claim
37 words
A copolymer according to claim 1, wherein said alkali metal hydrocarbon compound has the following general formula: RM wherein R represents an alkyl group having 1-6 carbon atoms and M is a lithium, sodium or potassium atom.
Claim 7
Dependent Claim
14 words
A copolymer according to claim 1, wherein said alkali metal hydrocarbon compound is butyllithium.
Claim 8
Dependent Claim
20 words
A copolymer according to claim 1, wherein said acetylene-conjugated diene random copolymer is acetylene-butadiene random copolymer or acetylene-isoprene random copolymer.
Claim 9
Dependent Claim
31 words
A copolymer according to claim 1, wherein said alkali metalation reaction is carried out in a solvent selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, alicyclic hydrocarbons and ethers.
Claim 10
Dependent Claim
20 words
A copolymer according to claim 1, wherein said metalation reaction is carried out at a temperature of 0 * +90*C.
Claim 11
Dependent Claim
42 words
A copolymer according to claim 1, wherein said alkali metal or organo alkali metal compound is used in an amount of 0.005-1.0 time, calculated as the alkali metal atom, of the total amount of acetylene and conjugated diene units in the copolymer.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |