US3890408A
Expired / Lapsed
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Process for preparing block copolymers
Assignee: Stamicarbon BV
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Filing: 1972-06-30
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Granted: 1975-06-17
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Expires: 1992-06-30
Abstract
Abstract Block copolymers of the general configuration A-B-C- and B-C are prepared according to the process disclosed by preparing by means of a lithium based anionic initiator a polymer form a conjugated diene having at least one terminal dienyl anion. Said polymer may optionally have a non-elastomeric polymer block A attached thereto. The said polymer is reacted with a compound CH2 R1R2 such as diphenyl ethylene and subsequently with a 1-alkylethylene-carboxylic acid ester. Illustrative are poly(methyl methacrylate)-polydiene-poly(methyl methacrylate) block copolymers. Blockcopolymers so obtained are soluble in several organic solvents. Novel block copolymers are also disclosed.
Inventors
- 👤 Herman A J Schepers
- 👤 Bernard C Roest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:45
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/026
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
12 words
A PROCESS FOR PREPARING AN ELASTOMERIC BLOCK COPOLYMER HAVING THE GENERAL CONFIGURATION
Claim 2
Dependent Claim
12 words
A PROCESS FOR PREPARING AN ELASTOMERIC BLOCK COPOLYMER HAVING THE GENERAL CONFIGURATION
Claim 3
Dependent Claim
23 words
POLYMERIZING A MONOMER OR MONOMER MIXTURE WITH THE AID OF A MONOFUNCTIONAL LITHIUM-BASED ANIONIC INITIATOR TO FORM SAID FIRST NON-ELASTOMER POLYMER BLOCK A;
Claim 4
Dependent Claim
23 words
POLYMERIZING A MONOMER OR MONOMER MIXTURE WITH THE AID OF A MONOFUNCTIONAL LITHIUM-BASED ANIONIC INITIATOR TO FORM SAID FIRST NON-ELASTOMER POLYMER BLOCK A;
Claim 5
Dependent Claim
33 words
ADDING A CONJUGATED DIENE MONOMER TO THE REACTION MIXTURE CONTAINING SAID BOCK AN WHILE CONTINUING SAID POLYMERIZATION UNDER SUCH CONDITIONS TO FORM THE SAID ELASTOMERIC POLYMER BLOCK B ON NON-ELASTOMERIC POLYMER BLOCK A;
Claim 6
Dependent Claim
33 words
ADDING A CONJUGATED DIENE MONOMER TO THE REACTION MIXTURE CONTAINING SAID BOCK AN WHILE CONTINUING SAID POLYMERIZATION UNDER SUCH CONDITIONS TO FORM THE SAID ELASTOMERIC POLYMER BLOCK B ON NON-ELASTOMERIC POLYMER BLOCK A;
Claim 7
Dependent Claim
33 words
adding a conjugated diene monomer to the reaction mixture containing said block A while continuing said polymerization under such conditions to form the said elastomeric polymer block B on non-elastomeric polymer block A;
Claim 8
Dependent Claim
33 words
adding a conjugated diene monomer to the reaction mixture containing said block A while continuing said polymerization under such conditions to form the said elastomeric polymer block B on non-elastomeric polymer block A;
Claim 9
Dependent Claim
32 words
Process according to claim 1 wherein said compound of the formula CH2 C R1R2 is selected from the group consisting of 1, 1-diphenyl ethylene, 1,1-di-(p-methyl-phenyl)-ethylene; 1-phenyl-1-napthyl-ethylene; 1,1-di-(m-methyl-phenyl)-ethylene; 1,1-di-(p-ethyl-phenyl)ethylene; 1,1-di-(p-hexyl-phenyl)-ethylene or 1,1-di-naphtyl ethylene.
Claim 10
Dependent Claim
50 words
adding to the reaction mixture CH2 C R1R2 wherein R1 and R2 independently represent an aryl group having 6 - 18 carbon atoms or an aralkyl group having 6 - 18 carbon atoms, the amount being from 0.1 to 10 times the molar amount of said anionic initiator, and thereafter
Claim 11
Dependent Claim
50 words
adding to the reaction mixture CH2 C R1R2 wherein R1 and R2 independently represent an aryl group having 6 - 18 carbon atoms or an aralkyl group having 6 - 18 carbon atoms, the amount being from 0.1 to 10 times the molar amount of said anionic initiator, and thereafter
Claim 12
Dependent Claim
47 words
adding to the reaction mixture CH2 C R1R2 wherein R1 and R2 independently represent an aryl group having 6-18 carbon atoms or an aralkyl group having 6-18 carbon atoms, the amount being from 0.1 to 10 times the molar amount of the said anionic initiator, and thereafter
Claim 13
Dependent Claim
47 words
adding to the reaction mixture CH2 C R1R2 wherein R1 and R2 independently represent an aryl group having 6-18 carbon atoms or an aralkyl group having 6-18 carbon atoms, the amount being from 0.1 to 10 times the molar amount of the said anionic initiator, and thereafter
Claim 14
Dependent Claim
10 words
Process according to claim 2 Wherein said compound is 1,1-diphenylethylene.
Claim 15
Dependent Claim
5 words
ADDING TO THE REACTION MIXTURE
Claim 16
Dependent Claim
5 words
ADDING TO THE REACTION MIXTURE
Claim 17
Dependent Claim
24 words
adding to the reaction mixture said 1-alkyl-ethylene carboxylic ester while continuing polymerization to form terminal block C, whereby the elastomeric block copolymer is formed.
Claim 18
Dependent Claim
24 words
adding to the reaction mixture said 1-alkyl-ethylene carboxylic ester while continuing polymerization to form terminal block C, whereby the elastomeric block copolymer is formed.
Claim 19
Dependent Claim
25 words
ADDING TO THE REACTION MIXTURE SAID 1-ALKYL-ETHYLENE CARBOXYLIC ESTER WHILE CONTINUING POLYMERIZATION TO FORM THERMINAL BLOCK C, WHEREBY SAID ELASTOMERIC BLOCK COPOLYMER A-B-C IS FORMED.
Claim 20
Dependent Claim
25 words
ADDING TO THE REACTION MIXTURE SAID 1-ALKYL-ETHYLENE CARBOXYLIC ESTER WHILE CONTINUING POLYMERIZATION TO FORM THERMINAL BLOCK C, WHEREBY SAID ELASTOMERIC BLOCK COPOLYMER A-B-C IS FORMED.
Claim 21
Dependent Claim
25 words
adding to the reaction mixture said 1-alkyl-ethylene carboxylic ester while continuing polymerization to form terminal block C, whereby said elastomeric block copolymer A-B-C is formed.
Claim 22
Dependent Claim
25 words
adding to the reaction mixture said 1-alkyl-ethylene carboxylic ester while continuing polymerization to form terminal block C, whereby said elastomeric block copolymer A-B-C is formed.
Claim 23
Dependent Claim
24 words
Process according to claim 1 wherein the amount of said compound is from 0.5 to 5 times the molar amount of said anionic initiator.
Claim 24
Dependent Claim
24 words
Process according to claim 1 wherein both of polymer blocks A and C are poly(methyl methacrylate) and polymer block B is polyisoprene or polybutadiene.
Claim 25
Dependent Claim
106 words
Process for preparing an elastomeric block copolymer having polymer blocks B and C wherein B is an elastomeric conjugated diene polymer block having a number average molecular weight between about 25,000 and 1,000,000 and a glass transition point below about 0 *C and c is a polymer block having a number average molecular weight between about 200 and 100,000 and a glass transition point above about 50 *C formed from a 1-alkyl-ethylene carboxylic acid ester derived from a 1-alkyl-ethylene carboxylic acid of 4 - 10 carbon atoms and wherein the alkyl group has 1 - 4 carbon atoms, said process comprising the sequential copolymerization steps of:
Claim 26
Dependent Claim
106 words
Process for preparing an elastomeric block copolymer having polymer blocks B and C wherein B is an elastomeric conjugated diene polymer block having a number average molecular weight between about 25,000 and 1,000,000 and a glass transition point below about 0 *C and c is a polymer block having a number average molecular weight between about 200 and 100,000 and a glass transition point above about 50 *C formed from a 1-alkyl-ethylene carboxylic acid ester derived from a 1-alkyl-ethylene carboxylic acid of 4 - 10 carbon atoms and wherein the alkyl group has 1 - 4 carbon atoms, said process comprising the sequential copolymerization steps of:
Claim 27
Dependent Claim
33 words
Process according to claim 6 wherein said compound of the formula CH2 C R1R2 is selected from the group consisting of 1, 1-diphenyl ethylene, 1,1-di-(p-methyl-phenyl)-ethylene; 1-phenyl-1-naphthyl ethylene; 1,1-di-(m-methyl-phenyl)-ethylene; 1,1-di-(p-ethyl-phenyl)ethylene; 1,1-di-(p-hexyl-phenyl)-ethylene or 1,1-di-naphtyl ethylene.
Claim 28
Dependent Claim
10 words
Process according to claim 7 wherein said compound is 1,1-diphenylethylene.
Claim 29
Dependent Claim
24 words
Process according to claim 6 wherein the amount of said compound is from 0.5 to 5 times the molar amount of said anionic initiator.
References Cited (Backward Citations)
US3448176A
Cited
US3621077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |