US4136137A
Expired / Lapsed
US
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Block copolymers
Assignee: Phillips Petroleum Co
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Filing: 1978-05-08
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Granted: 1979-01-23
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Expires: 1998-05-08
Abstract
Abstract Block copolymers and adhesive compositions comprising a block copolymer of a conjugated diene, styrene, and a hydrocarbyl-substituted styrene, the block copolymer having an inherent viscosity within the range of from about 0.5 to about 3.
Inventors
- 👤 Henry L. Hsieh
- 👤 Floyd E. Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:34
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C08; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08L; C08L2666/00; C08L2666/02; C08L2666/28; Y; Y10; Y10S; Y10S525/00; Y10S525/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
242 words
A rubbery radial block copolymer consisting essentially of a conjugated diene containing 4 to 12 carbon atoms per molecule, styrene, and a hydrocarbyl-substituted styrene of the formula ##STR2## wherein R is a hydrocarbyl radical containing 1 to 12 carbon atoms selected from the group consisting of alkyl, cycloalkyl, aryl, alkenyl, cycloalkenyl, and combinations thereof and n is an integer having a value within the range of 1 to 5, said rubbery block copolymer having an inherent viscosity within the range of from about 0.5 to about 3 and being represented by the general formula (A -- B) x Z wherein A is a resinous (nonrubbery) polymer block of styrene and hydrocarbyl-substituted styrene, B is a rubbery polymer block of conjugated diene, Z is a residue from a coupling agent, and x is greater than 2 and represents the number of (A -- B--) polymer blocks coupled together, and wherein said block copolymer, based on 100 parts by weight of copolymer, contains from about 50 to about 90 parts by weight of said conjugated diene and from about 50 to about 10 parts by weight of said styrene and hydrocarbyl-substituted styrene and the amount of said hydrocarbyl-substituted styrene to the total of said conjugated diene, styrene, and hydrocarbyl-substituted styrene is within the range of from about 1 to about 20 parts by weight of said hydrocarbyl-substituted styrene per 100 parts by weight of the total of said conjugated diene, styrene, and hydrocarbyl-substituted styrene.
Claim 2
Dependent Claim
242 words
A rubbery radial block copolymer consisting essentially of a conjugated diene containing 4 to 12 carbon atoms per molecule, styrene, and a hydrocarbyl-substituted styrene of the formula ##STR2## wherein R is a hydrocarbyl radical containing 1 to 12 carbon atoms selected from the group consisting of alkyl, cycloalkyl, aryl, alkenyl, cycloalkenyl, and combinations thereof and n is an integer having a value within the range of 1 to 5, said rubbery block copolymer having an inherent viscosity within the range of from about 0.5 to about 3 and being represented by the general formula (A -- B) x Z wherein A is a resinous (nonrubbery) polymer block of styrene and hydrocarbyl-substituted styrene, B is a rubbery polymer block of conjugated diene, Z is a residue from a coupling agent, and x is greater than 2 and represents the number of (A -- B--) polymer blocks coupled together, and wherein said block copolymer, based on 100 parts by weight of copolymer, contains from about 50 to about 90 parts by weight of said conjugated diene and from about 50 to about 10 parts by weight of said styrene and hydrocarbyl-substituted styrene and the amount of said hydrocarbyl-substituted styrene to the total of said conjugated diene, styrene, and hydrocarbyl-substituted styrene is within the range of from about 1 to about 20 parts by weight of said hydrocarbyl-substituted styrene per 100 parts by weight of the total of said conjugated diene, styrene, and hydrocarbyl-substituted styrene.
Claim 3
Dependent Claim
27 words
A composition according to claim 1 wherein said block polymer contains 60 parts by weight butadiene, 30 parts by weight styrene, and 10 parts by weight 4-ethylstyrene.
Claim 4
Dependent Claim
12 words
A composition according to claim 1 wherein said hydrocarbyl-substituted styrene is 4-tert-butylstyrene.
Claim 5
Dependent Claim
40 words
A composition according to claim 1 wherein said block polymer contains 60-70 parts by weight butadiene, 20-35 parts by weight styrene, and 1-20 parts by weight 4-tert-butylstyrene, and said coupling agent is silicon tetrachloride or a hexafunctional epoxidized linseed oil.
Claim 6
Dependent Claim
14 words
A composition according to claim 1 wherein said hydrocarbyl-substituted styrene is 4-methylstyrene or 4-ethylstyrene.
Claim 7
Dependent Claim
27 words
A composition according to claim 1 wherein said block polymer contains 70 parts by weight butadiene, 10-29 parts by weight styrene, and 1-20 parts by weight 4-methylstyrene.
Claim 8
Dependent Claim
30 words
A composition according to claim 1 wherein said conjugated diene is butadiene, said hydrocarbyl-substituted styrene is 4-methylstyrene, 4-ethylstyrene, or 4-tert-butylstyrene, and said coupling agent contains at least three reactive sites.
Claim 9
Dependent Claim
19 words
A composition according to claim 7 wherein the coupling agent is silicon tetrachloride or a hexafunctional epoxidized linseed oil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |