US4701493A
Expired / Lapsed
US
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Acrylic modified N-arylmaleimide copolymer molding composition
Assignee: Lyondell Chemical Technology LP
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Filing: 1986-07-14
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Granted: 1987-10-20
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Expires: 2006-07-14
Abstract
Abstract An acrylic modified styrenic/N-arylmaleimide copolymer containing composition which exhibits excellent melt flow properties, impact strength and gloss upon molding is disclosed.
Inventors
- 👤 Barry D. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:46
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F285/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
74 words
An acrylic modified styrenic/N-arylmaleimide copolymer moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkylacrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of both the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B).
Claim 2
Dependent Claim
74 words
An acrylic modified styrenic/N-arylmaleimide copolymer moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkylacrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of both the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B).
Claim 3
Dependent Claim
40 words
The moldable composition of claim 1 in which in step (A), said at least one alkyl acrylate monomer is selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, and the other C 3 -C 10 alkyl acrylates.
Claim 4
Dependent Claim
36 words
The moldable composition of claim 1 in which in step (A), said at least one polyfunctional acrylate is selected from the group consisting of 1,3-butylene di(meth)acrylate, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, and other di(meth) acrylates.
Claim 5
Dependent Claim
50 words
The moldable composition of claim 1 in which in step (A), at least 99 total weight percent of at least one alkyl acrylate monomer is polymerized in the presence of from about 0.005 to about 0.01 total weight percent recurring units of said at least one polyfunctional acrylate crosslinking monomer.
Claim 6
Dependent Claim
31 words
The moldable composition of claim 1 in which the resulting crosslinked polyacrylate of step (A) has a number average molecular weight within the range of from about 200,000 to about 500.000.
Claim 7
Dependent Claim
55 words
The moldable composition of claim 1 in which in step (B), said terpolymer contains from about 20 to about 50 weight percent recurring units of a styrenic monomer, from about 15 to about 25 weight percent recurring units of N-arylmaleimide, and from about 35 to about 55 weight percent recurring units of a 1,3-diene monomer.
Claim 8
Dependent Claim
31 words
The moldable composition of claim 1 in which in steps (B) and (C), said styrenic monomers are separately selected from the group consisting of styrene, p-methylstyrene, t-butylstyrene, dibromostyrene, and para-vinylbenzoic acid.
Claim 9
Dependent Claim
39 words
The moldable composition of claim 1 in which in steps (B) and (C), said N-arylmaleimide monomers are separately selected from the group consisting of N-phenylmaleimide; 2, 3, or 4-methylphenylmaleimide; 2, 3, or 4-bromophenylmaleimide; and 2, 3, or 4 methoxyphenylmaleimide.
Claim 10
Dependent Claim
24 words
The moldable composition of claim 1 in which in step (B), said 1,3-diene monomer is selected from the group consisting of 1,3-butadiene and isoprene.
Claim 11
Dependent Claim
30 words
The moldable composition of claim 1 in which the resulting terpolymer of step (B) has a number average molecular weight within the range of from about 180,000 to about 600,000.
Claim 12
Dependent Claim
41 words
The moldable composition of claim 1 in which in step (C), said copolymer contains from about 70 to about 85 weight percent recurring units of a styrenic monomer and from about 15 to about 30 weight percent recurring units of N-arylmaleimide.
Claim 13
Dependent Claim
36 words
The moldable composition of claim 1 in which the styrenic monomer employed in the terpolymer formed in step (B) and the styrenic monomer employed in the copolymer formed in step (C) are the same styrenic monomers.
Claim 14
Dependent Claim
35 words
The moldable composition of claim 1 in which the N-arylmaleimide monomer employed in the terpolymer formed in Step (B) and N-arylmaleimide monomer employed in the copolymer formed in step (C) are the same N-arylmaleimide monomers.
Claim 15
Dependent Claim
30 words
The moldable composition of claim 1 in which the resulting copolymer of step (C) has a number average molecular weight within the range of from about 140,000 to about 260,000.
Claim 16
Dependent Claim
42 words
The moldable composition of claim 1 comprising in weight percent from about 10 to about 20 of the crosslinked polyacrylate; from about 5 to about 15 of a styrenic/N arylmaleimide/1,3-diene terpolymer; and from about 65 to about 85 of the styrenic/N-arylmaleimide copolymer.
Claim 17
Independent Claim
91 words
A method for producing a molded composition which comprises (i) forming an acrylic modified styrenic/N-arylmaleimide moldable composition by a process which comprises the following three sequential steps: (A) polymerizing at least one alkyl acrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the crosslinked polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), and (ii) molding the resulting moldable composition.
Claim 18
Independent Claim
91 words
A method for producing a molded composition which comprises (i) forming an acrylic modified styrenic/N-arylmaleimide moldable composition by a process which comprises the following three sequential steps: (A) polymerizing at least one alkyl acrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the crosslinked polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), and (ii) molding the resulting moldable composition.
Claim 19
Dependent Claim
18 words
The method of claim 16 in which the moldable composition is molded in contact with a reinforcing filler.
Claim 20
Dependent Claim
13 words
The method of claim 17 in which said reinforcing filler is glass fibers.
Claim 21
Dependent Claim
134 words
A moldable polymer composition comprising in weight percent (i) from about 1 to about 99 of an acrylic modified styrenic/N-arylmaleimide moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkylacrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the crosslinked polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), and (ii) from about 99 to about 1 of at least one thermoplastic resin selected from the group consisting of poly(vinyl chloride); chlorinated poly(vinyl chloride), styrene/acrylonitrile, styrene/maleic anhydride, rubber modified styrene/maleic anhydride, poly(methylmethacrylate); polycarbonate, polyesters, polyacrylates; polyamides, polysulfones, poly(phthalate-carbonates), poly(phenylene oxide), acetals and polyether imides.
Claim 22
Dependent Claim
134 words
A moldable polymer composition comprising in weight percent (i) from about 1 to about 99 of an acrylic modified styrenic/N-arylmaleimide moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkylacrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the crosslinked polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the crosslinked polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), and (ii) from about 99 to about 1 of at least one thermoplastic resin selected from the group consisting of poly(vinyl chloride); chlorinated poly(vinyl chloride), styrene/acrylonitrile, styrene/maleic anhydride, rubber modified styrene/maleic anhydride, poly(methylmethacrylate); polycarbonate, polyesters, polyacrylates; polyamides, polysulfones, poly(phthalate-carbonates), poly(phenylene oxide), acetals and polyether imides.
Claim 23
Independent Claim
146 words
A method for producing a molded polymer composition which comprises (i) blending from about 1 to about 99 weight percent of an acrylic modified styrenic/N-arylmaleimide moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkyl acrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), with from about 99 to about 1 total weight percent of at least one thermoplastic resin selected from the group consisting of poly(vinyl chloride); chlorinated poly(vinyl chloride), styrene/acrylonitrile, styrene/maleic anhydride, rubber modified styrene/maleic anhydride, poly(methylmethacrylate); polycarbonate, polyesters, polyacrylates; polyamides, polysulfones, poly(phthalatecarbonates), poly(phenylene oxide), acetals and polyether imides and (ii) molding the resulting blend.
Claim 24
Independent Claim
146 words
A method for producing a molded polymer composition which comprises (i) blending from about 1 to about 99 weight percent of an acrylic modified styrenic/N-arylmaleimide moldable composition formed by a process which comprises the following three sequential steps: (A) polymerizing at least one alkyl acrylate monomer in the presence of at least one polyfunctional acrylate crosslinking monomer; (B) forming a styrenic/N-arylmaleimide/1,3-diene terpolymer in the presence of the polyacrylate prepared in (A); and (C) forming a styrenic/N-arylmaleimide copolymer in the presence of the polyacrylate prepared in (A) and the styrenic/N-arylmaleimide/1,3-diene terpolymer prepared in (B), with from about 99 to about 1 total weight percent of at least one thermoplastic resin selected from the group consisting of poly(vinyl chloride); chlorinated poly(vinyl chloride), styrene/acrylonitrile, styrene/maleic anhydride, rubber modified styrene/maleic anhydride, poly(methylmethacrylate); polycarbonate, polyesters, polyacrylates; polyamides, polysulfones, poly(phthalatecarbonates), poly(phenylene oxide), acetals and polyether imides and (ii) molding the resulting blend.
Claim 25
Dependent Claim
17 words
The method of claim 20 in which the blend is molded in contact with a reinforcing filler.
Claim 26
Dependent Claim
13 words
The method of claim 21 in which said reinforcing filler is glass fibers.
References Cited (Backward Citations)
US3998907A
Cited
US4224216A
Cited
US4381373A
Cited
US4598126A
Cited
US4485215A
Cited
US4567233A
Cited
US4608414A
Cited
US4663390A
Cited
US4585824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |