EP0153727A2
Expired / Lapsed
EP
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Craze-resistant transparent resinous copolymers
Assignee: Phillips Petroleum Co
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Filing: 1985-02-26
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Granted: —
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Expires: 2005-02-26
Abstract
Abstract Resinous polymodal block copolymers of such as butadiene and styrene which are craze-resistant, transparent, and substantially color-free, and methods of producing the block copolymers. The copolymers are prepared by sequential charge copolymerization modes comprising the solution polymerization of at least two charges each of a conjugated diene, a monovinylarene, and a monoalkali metal initiator, at least one charge of conjugated diene monomer precedes the last charge of monoalkali metal initiator, at least one charge each of monovinylarene and of conjugated diene follows the last charge of monoalkali metal initiator, and the final charge of monomer is a charge of conjugated diene monomer, such that the number of charges of each of said components is not more than three, and the total of the charges of the three components is 8 or 9.
Inventors
- 👤 Alonzo Gene Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 06:18
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/044
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
171 words
A sequential node of block copolymerization characterized by polymerizing under solution polymerization conditions at least one monovinylarene monomer and at least one conjugated diene monomer in a ratio of 55 to 95 weight percent monovinylarene and 45 to 5 weight percent conjugated diene, by a sequential charge polymerization process wherein at least two charges each of said conjugated diene, said : monovinylarene, and of a monoalkali metal initiator are employed; at least one charge of each of said monovinylarene and of said conjugated diene follows the last charge of said monoalkali metal initiator; at least one charge of conjugated diene precedes the last charge of monoalkali metal initiator; each monomer charge polymerizes to substantial completion prior to addition of any subsequent charge; the number of charges of each of said conjugated diene, said monovinylarene, and said monoalkali metal initiator, is not in excess of 3, and the total of said charges is 8 or 9; and thereafter coupling with a polyfunctional coupling agent; thereby producing a resinous polymodal, coupled block copolymer.
Claim 2
Dependent Claim
171 words
A sequential node of block copolymerization characterized by polymerizing under solution polymerization conditions at least one monovinylarene monomer and at least one conjugated diene monomer in a ratio of 55 to 95 weight percent monovinylarene and 45 to 5 weight percent conjugated diene, by a sequential charge polymerization process wherein at least two charges each of said conjugated diene, said : monovinylarene, and of a monoalkali metal initiator are employed; at least one charge of each of said monovinylarene and of said conjugated diene follows the last charge of said monoalkali metal initiator; at least one charge of conjugated diene precedes the last charge of monoalkali metal initiator; each monomer charge polymerizes to substantial completion prior to addition of any subsequent charge; the number of charges of each of said conjugated diene, said monovinylarene, and said monoalkali metal initiator, is not in excess of 3, and the total of said charges is 8 or 9; and thereafter coupling with a polyfunctional coupling agent; thereby producing a resinous polymodal, coupled block copolymer.
Claim 3
Dependent Claim
41 words
The process of claim 1 characterized in that said sequential charge polymerization process employs a charge order: where L = hydrocarbyl monoalkali metal initiator addition, S = monovinylarene monomer addition, B = conjugated diene addition, and C = coupling agent addition.
Claim 4
Dependent Claim
21 words
The process of claim 2 characterized by employing ranges of monomer additions and of monoalkali metal initiator additions at each increment:
Claim 5
Dependent Claim
22 words
The process of claim 3 characterized in that the resultant copolymer contains relative block sizes before coupling calculated from ranges of additions:
Claim 6
Dependent Claim
20 words
The process of claim 2 characterized by employing ranges of monomer additions and of monoalkali metal additions at each increment:
Claim 7
Dependent Claim
23 words
The process of cladmr 5 characterized in that the resultant copolymer contains relative block sizes before coupling calculated from narrow ranges of additions:
Claim 8
Dependent Claim
23 words
The process of cladmr 5 characterized in that the resultant copolymer contains relative block sizes before coupling calculated from narrow ranges of additions:
Claim 9
Dependent Claim
36 words
The process of claim 1 characterized in that said sequential polymerization process employs a charge order: where L = monoalkali metal initiator, S = monovinylarene monomer, B = conjugated diene monomer, and C = coupling agent.
Claim 10
Dependent Claim
20 words
The process of claim 7 characterized by employing ranges of monomer additions and of monoalkali metal added at each increment:
Claim 11
Dependent Claim
19 words
The process of claim 8 characterized in that the resultant block copolymer contains calculated relative block sizes before coupling:
Claim 12
Dependent Claim
21 words
The process of claim 7 characterized by employing ranges of monomer additions and of monoalkali metal initiator added at each increment:
Claim 13
Dependent Claim
17 words
The process of claim 10 characterized in that.the resultant copolymer contains calculated relative block sizes before coupling:
Claim 14
Dependent Claim
37 words
The process of claim 1 characterized in that said sequential charge polymerization process employs a charge order: where L = monoalkali metal initiator, S = monovinylarene monomer, B = conjugated diene monomer, and C = coupling agent.
Claim 15
Dependent Claim
21 words
The process of claim 12 characterized by employing ranges of monomer additions and of monoalkali metal initiator added at each increment:
Claim 16
Dependent Claim
19 words
The process of claim 13 characterized in that the resultant block copolymer contains calculated relative block sizes before coupling:
Claim 17
Dependent Claim
21 words
The process of claim 12 characterized by employing ranges of monomer additions and of monoalkali metal initiator added at each increment:
Claim 18
Dependent Claim
18 words
The process of claim 15 characterized in that the resultant block copolymer contains calculated block sizes before coupling:
Claim 19
Dependent Claim
45 words
The process of any of claims 1 to 16 characterized in that said conjugated diene monomer contains 4 to 6 carbon atoms per molecule; said monovinylarene monomer contains 8 to 10 carbon atoms per monomer; and a hydrocarbyl monolithium initiator as said monoalkali metal initiator.
Claim 20
Dependent Claim
20 words
The process of claim 17 characterized by employing butadiene or isoprene as said conjugated diene, and styrene as said monovinylarene.
Claim 21
Dependent Claim
22 words
The process of claim 18 characterized by employing butadiene and styrene as said monomers, and an epoxidized compound as said coupling agent.
Claim 22
Dependent Claim
57 words
A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4-6 carbon atoms per molecule and at least one monovinylarene monomer of 8-10 carbon atoms per molecule, in a weight ratio of 60-87 percent copolymerized conjugated diene and 40-13 percent copolymerized monovinylarene, characterized in that said copolymer contains relative block sizes before coupling:
Claim 23
Dependent Claim
57 words
A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4-6 carbon atoms per molecule and at least one monovinylarene monomer of 8-10 carbon atoms per molecule, in a weight ratio of 60-87 percent copolymerized conjugated diene and 40-13 percent copolymerized monovinylarene, characterized in that said copolymer contains relative block sizes before coupling:
Claim 24
Dependent Claim
13 words
The copolymer of claim 20 characterized by containing relative block sizes before coupling:
Claim 25
Dependent Claim
65 words
. A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4-6 carbon atoms per molecule and at least one monovinylarene monomer of 8 to 10 carbon atoms per molecule, in a weight ratio of 60 to 87 percent copolymerized conjugated diene and 40 to 13 percent copolymerized monovinylarene, characterized in that said block copolymer contains relative block sizes before coupling:
Claim 26
Dependent Claim
65 words
. A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4-6 carbon atoms per molecule and at least one monovinylarene monomer of 8 to 10 carbon atoms per molecule, in a weight ratio of 60 to 87 percent copolymerized conjugated diene and 40 to 13 percent copolymerized monovinylarene, characterized in that said block copolymer contains relative block sizes before coupling:
Claim 29
Dependent Claim
16 words
The copolymer of claim 22 characterized in that the copolymer contains relative block sizes before coupling:
Claim 30
Dependent Claim
66 words
A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4 to 6 carbon atoms per molecule and at least one monovinylarene monomer of 8 to 10 carbon atoms per molecule, in a weight ratio of 60 to 87 percent copolymerized conjugated diene and 40 to 13 percent copolymerized monovinylarene, characterized in that said block copolymer contains relative block sizes before coupling:
Claim 31
Dependent Claim
66 words
A resinous polymodal coupled block copolymer of at least one conjugated diene monomer of 4 to 6 carbon atoms per molecule and at least one monovinylarene monomer of 8 to 10 carbon atoms per molecule, in a weight ratio of 60 to 87 percent copolymerized conjugated diene and 40 to 13 percent copolymerized monovinylarene, characterized in that said block copolymer contains relative block sizes before coupling:
Claim 32
Dependent Claim
16 words
The copolymer of claim 24 characterized in that said block copolymer contains block sizes before coupling:
Claim 33
Dependent Claim
24 words
The copolymer of any of claims 20 to 25 characterized in that butadiene or isoprene is said conjugated diene, and styrene is said monovinylarene.
Claim 34
Dependent Claim
20 words
The copolymer of claim 26 characterized in that butadiene and styrene are said monomers and an epoxidized compound effected coupling.
Claim 35
Dependent Claim
23 words
Blends of polystyrene with the copolymer of any of claims 20 to 27 or as obtained in any of claims 1 to 19.
Claim 36
Dependent Claim
22 words
Blister packs comprising the copolymer of any of claims 20 to 27 or as obtained in any of claims 1 to 19.
Claim 37
Dependent Claim
13 words
The copolymer prepared by the process of any of claims 1 to 19.
References Cited (Backward Citations)
No citation records indexed.
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