Patent US4152370A successfully refreshed from Google Patents.
US4152370A
Expired / Lapsed
US
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Preparation, composition, and use of block polymers
Assignee: Phillips Petroleum Co
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Filing: 1978-02-09
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Granted: 1979-05-01
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Expires: 1998-02-09
Abstract
Abstract Linear block copolymers having the formula A-B/A'-C and C-B/A'-A are prepared, wherein terminal block A is a poly(monovinylarene) block, terminal block C is a block of low vinyl poly(1,3-butadiene), having less than about 30 mole percent vinyl pendant groups, and the center block B/A' is a block composed of monovinylarene monomer units and of monomer units of certain conjugated dienes. Center block B/A' has a tapered structure.
Inventors
- 👤 George A. Moczygemba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:35
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/046
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
108 words
The group of linear block copolymers comprising the copolymers represented by the formulas A-B/A'-C and C-B/A'-A wherein A is a poly(monovinylarene) block made up of monovinylarene monomer units having 8 to about 16 carbon atoms per monomer unit, C is a low vinyl poly(1,3-butadiene) block having less than about 30 mole percent pendant vinyl groups and being made up of polymerized 1,3-butadiene monomer units, and B/A' is a tapered block prepared from units of at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and units of at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit.
Claim 2
Dependent Claim
108 words
The group of linear block copolymers comprising the copolymers represented by the formulas A-B/A'-C and C-B/A'-A wherein A is a poly(monovinylarene) block made up of monovinylarene monomer units having 8 to about 16 carbon atoms per monomer unit, C is a low vinyl poly(1,3-butadiene) block having less than about 30 mole percent pendant vinyl groups and being made up of polymerized 1,3-butadiene monomer units, and B/A' is a tapered block prepared from units of at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and units of at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit.
Claim 3
Dependent Claim
15 words
A polymer formed when a polymer according to claim 1 is terminated, recovered and hydrogenated.
Claim 4
Dependent Claim
35 words
A polymer according to claim 2 wherein A is a polystyrene block, and B/A' is composed of polymerized styrene and isoprene, and wherein block C has a vinyl content less than about 15 mole percent.
Claim 5
Independent Claim
144 words
A method of producing a copolymer comprising: (a) charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit to a polymerization zone and polymerizing said monovinylarene monomer to form a block A of poly(monovinylarene); (b) next, charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit to said polymerization zone and copolymerizing said monovinylarene monomer and said conjugated diene monomer to add to block A a tapered block B/A' formed of units of said conjugated diene and of said monovinylarene; (c) and then charging 1,3-butadiene to said polymerization zone and polymerizing said 1,3-butadiene to add to said tapered block B/A' a block of low vinyl poly(1,3-butadiene) having less than about 30 mole percent vinyl content.
Claim 6
Independent Claim
144 words
A method of producing a copolymer comprising: (a) charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit to a polymerization zone and polymerizing said monovinylarene monomer to form a block A of poly(monovinylarene); (b) next, charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit to said polymerization zone and copolymerizing said monovinylarene monomer and said conjugated diene monomer to add to block A a tapered block B/A' formed of units of said conjugated diene and of said monovinylarene; (c) and then charging 1,3-butadiene to said polymerization zone and polymerizing said 1,3-butadiene to add to said tapered block B/A' a block of low vinyl poly(1,3-butadiene) having less than about 30 mole percent vinyl content.
Claim 7
Dependent Claim
24 words
A method according to claim 4 wherein the conjugated diene and the monovinylarene used to form said tapered center block are isoprene and styrene.
Claim 8
Dependent Claim
20 words
A method wherein a copolymer formed according to the method of claim 4 is hydrogenated after it has been formed.
Claim 9
Dependent Claim
10 words
A copolymer prepared according to the method of claim 4.
Claim 10
Independent Claim
132 words
A method of producing a polymer comprising: (a) charging 1,3-butadiene to a polymerization zone under polymerization conditions to form a block of poly(1,3-butadiene) having less than about 30 mole percent vinyl content; (b) next, charging to said polymerization zone at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit under polymerization conditions to add to said poly(1,3-butadiene) block a tapered block formed of units of said conjugated diene monomer and of said monovinylarene monomer units, (c) next, charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit to said polymerization zone under polymerization conditions to add onto said tapered block a block of poly(monovinylarene).
Claim 11
Independent Claim
132 words
A method of producing a polymer comprising: (a) charging 1,3-butadiene to a polymerization zone under polymerization conditions to form a block of poly(1,3-butadiene) having less than about 30 mole percent vinyl content; (b) next, charging to said polymerization zone at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit and at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit under polymerization conditions to add to said poly(1,3-butadiene) block a tapered block formed of units of said conjugated diene monomer and of said monovinylarene monomer units, (c) next, charging at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit to said polymerization zone under polymerization conditions to add onto said tapered block a block of poly(monovinylarene).
Claim 12
Dependent Claim
25 words
A method according to claim 8 wherein the conjugated diene and the monovinylarene monomers used to form said tapered center block are isoprene and styrene.
Claim 13
Dependent Claim
19 words
A method wherein a copolymer formed according to claim 8 is terminated and hydrogenated after it has been formed.
Claim 14
Dependent Claim
10 words
A copolymer prepared according to the method of claim 8.
Claim 15
Dependent Claim
12 words
An article of manufacture prepared from a composition according to claim 2.
Claim 16
Dependent Claim
12 words
An article of manufacture prepared from a composition according to claim 3.
Claim 17
Dependent Claim
13 words
An article of manufacture prepared from a composition prepared according to claim 6.
Claim 18
Dependent Claim
13 words
An article of manufacture prepared from a composition prepared according to claim 10.
Claim 19
Dependent Claim
13 words
An article of manufacture prepared from a composition prepared according to claim 11.
Claim 20
Dependent Claim
15 words
A polymer according to claim 1 wherein said polymer is represented by the formula A-B/A'-C.
Claim 21
Dependent Claim
15 words
A polymer formed when a polymer according to claim 17 is terminated, recovered, and hydrogenated.
Claim 22
Dependent Claim
20 words
A polymer according to claim 1 wherein said block C has a vinyl content less than about 15 mole percent.
Claim 23
Dependent Claim
191 words
A polymer according to claim 17 wherein the monomer employed for the C block is 1,3-butadiene in an amount within the range of about 5 to about 50 parts by weight per hundred parts by weight of total monomers used to prepare the polymer; wherein the monomers employed for the B/A' block are (a) at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit in an amount within the range of about 1 to about 50 parts by weight per hundred parts by weight of total monomers used to prepare the polymer, and (b) at least one conjugated diene monomer having 5 to about 12 carbon atoms per monomer unit in an amount within the range of about 10 to about 89 parts by weight per hundred parts by weight of total monomers; and wherein the monomer employed for the A block is at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit in an amount within the range of about 5 to about 50 parts by weight per hundred parts by weight of total monomers used to prepare the polymer.
Claim 24
Dependent Claim
191 words
A polymer according to claim 17 wherein the monomer employed for the C block is 1,3-butadiene in an amount within the range of about 10 to about 35 parts by weight per hundred parts by weight of total monomers used to prepare the polymer; wherein the monomers employed for the B/A' block are (a) at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit in an amount within the range of about 5 to about 25 parts by weight per hundred parts by weight of total monomers used to prepare the polymer, and (b) at least one cojugated diene monomer having 5 to about 12 carbon atoms per monomer unit in an amount within the range of about 20 to about 80 parts by weight per hundred parts by weight of total monomers; and wherein the monomer employed for the A block is at least one monovinylarene monomer having 8 to about 16 carbon atoms per monomer unit in an amount within the range of about 5 to about 30 parts by weight per hundred parts by weight of total monomers used to prepare the polymer.
References Cited (Backward Citations)
US3670054A
Cited
US4086298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |