Patent US4748205A successfully refreshed from Google Patents.
US4748205A
Expired / Lapsed
US
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Thermoplastic resin composition
Assignee: Kureha Corp
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Filing: 1987-06-16
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Granted: 1988-05-31
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Expires: 2007-06-16
Abstract
Abstract A thermoplastic resin composition of high heat resistance and high impact resistance is described, comprising: (A) 50 to 90% by weight of a copolymer prepared by copolymerization of 10 to 35% by weight of acrylonitrile, 60 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and α-methylstyrene (α-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and α-MeSt, and 0 to less than 10% by weight of a vinyl monomer copolymerizable with the foregoing monomers; and (B) 10 to 50% by weight of a graft copolymer prepared by polymerizing 15 to 50 parts by weight of at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanides, methacrylic acid alkyl esters, and acrylic acid alkyl esters in the presence of 50 to 85 parts by weight of a butadiene- or alkyl acrylate-based rubber, the sum of the graft and rubber components being 100 parts by weight.
Inventors
- 👤 Takayuki Katto
- 👤 Yasumasa Komatsu
- 👤 Zenya Shiiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/16; C08L55/00; C08L55/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
167 words
A thermoplastic resin composition exhibiting improved heat resistance and high impact resistance, comprising: 50% to 90% by weight of a copolymer (A) prepared by copolymerizing of 10 to 35% by weight of acrylonitrile, 60 to 85% by weight of a monomer mixture consisting of 2-Isopropenylnaphthalene and α-methylstyrene, the proportion of 2-isopropenylnaphthalene being 5% to 70% by weight based on the total of 2-isoprophenyl- naphthalene and α-methylstyrene, and 0 to less than 10% by weight of a vinyl monomer copolymerizable with the foregoing monomers; and 10 to 50% by weight of a graft copolymer (B) prepared by adding 15 to 50 parts by weight of at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanides, methacrylic acid alkyl esters, and acrylic acid alkyl esters to 50 to 85 parts by weight of an alkyl acrylate-containing rubber, the sum of the rubber component and the graft component being 100 parts by weight, and polymerizing the graft copolymer in the presence of the rubber component.
Claim 2
Dependent Claim
167 words
A thermoplastic resin composition exhibiting improved heat resistance and high impact resistance, comprising: 50% to 90% by weight of a copolymer (A) prepared by copolymerizing of 10 to 35% by weight of acrylonitrile, 60 to 85% by weight of a monomer mixture consisting of 2-Isopropenylnaphthalene and α-methylstyrene, the proportion of 2-isopropenylnaphthalene being 5% to 70% by weight based on the total of 2-isoprophenyl- naphthalene and α-methylstyrene, and 0 to less than 10% by weight of a vinyl monomer copolymerizable with the foregoing monomers; and 10 to 50% by weight of a graft copolymer (B) prepared by adding 15 to 50 parts by weight of at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanides, methacrylic acid alkyl esters, and acrylic acid alkyl esters to 50 to 85 parts by weight of an alkyl acrylate-containing rubber, the sum of the rubber component and the graft component being 100 parts by weight, and polymerizing the graft copolymer in the presence of the rubber component.
Claim 3
Dependent Claim
27 words
The thermoplastic resin composition of claim 1, in which the total monomer mixture of copolymer (A) contains from 65 to 80% by weight of 2-isopropenylnaphthalene and α-methylstyrene.
Claim 4
Dependent Claim
29 words
The thermoplastic resin composition of claim 1, in which the proportion of 2-isopropenylnaphthalene is from 10 to 60% by weight based on the total weight of 2-isopropenylnaphthalene and α-methylstyrene.
Claim 5
Dependent Claim
24 words
The thermoplastic resin composition of claim 1, in which the total monomer mixture of copolymer (A) contains from 15 to 30% by weight acrylonitrile.
Claim 6
Dependent Claim
30 words
The thermoplastic resin composition of claim 1, in which copolymer (A) contains at least one of styrene, methyl methacrylate, methacrylonitrile, methacrylic acid or acrylic acid as the vinyl monomer component.
Claim 7
Dependent Claim
33 words
The thermoplastic resin composition of claim 1, in which the methacrylic acid alkyl esters in the graft component of a graft copolymer (B) have an alkyl group containing 1 to 4 carbon atoms.
Claim 8
Dependent Claim
33 words
The thermoplastic resin composition of claim 1, in which the acrylic acid alkyl esters in the graft component of a graft copolymer (B) has an alkyl group containing 1 to 8 carbon atoms.
Claim 9
Dependent Claim
55 words
The thermoplastic resin composition of claim 1, in which the graft component of graft copolymer (B) contains: 0to 100% by weight of a methacrylic acid alkyl ester, an acrylic acid alkyl ester or mixtures thereof; 0 to 85% by weight of an aromatic vinyl compound; and 0 to 40% by weight of a vinyl cyanide.
Claim 10
Dependent Claim
59 words
The thermoplastic resin composition of claim 1, in which the rubber component of graft copolymer (B) is a polyalkyl acrylate or an alkyl acrylate copolymer containing a major proportion of an alkyl acrylate and the balance at least one monomer copolymerizable therewith, provided that the alkyl group of the alkyl acrylate employed contains from 4 to 8 carbon atoms.
Claim 11
Dependent Claim
11 words
A molded article of the thermoplastic resin composition of claim 1.
References Cited (Backward Citations)
US4337324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |