US4080406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber-modified impact polystyrenes
Assignee: Union Carbide Corp
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Filing: 1976-04-12
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Granted: 1978-03-21
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Expires: 1996-04-12
Abstract
Abstract Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 25-75% vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 5-70% methyl or ethyl methacrylate; and (3) about 5-60% of an alkyl methacrylate having at least four carbon atoms in the alkyl group; and B. about 2-30 parts by weight of a rubber selected from the group consisting of butadiene and a block copolymer of butadiene and styrene containing up to 50% by weight styrene.
Inventors
- 👤 Donald Ross Kelsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:35
CPC Classifications
C; C08; C08F; C08F287/00; C08F279/00; C08F279/02; C08F279/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
125 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of (1) about 25-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 5-70% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-60% of at least one higher alkyl methacrylate having from four to 12 carbon atoms in the alkyl group; and B. about 2-30 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene.
Claim 2
Dependent Claim
125 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of (1) about 25-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 5-70% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-60% of at least one higher alkyl methacrylate having from four to 12 carbon atoms in the alkyl group; and B. about 2-30 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene.
Claim 3
Dependent Claim
17 words
The styrene composition in accordance with claim 1, wherein said selected vinyl aromatic monomer is unsubstituted styrene.
Claim 4
Dependent Claim
16 words
The styrene composition in accordance with claim 2 wherein said higher alkyl methacrylate is n-butyl methacrylate.
Claim 5
Dependent Claim
27 words
The styrene composition in accordance with claim 3, wherein said selected rubber is a block copolymer of butadiene and styrene containing up to 50% by weight styrene.
Claim 6
Dependent Claim
123 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 50-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 15-35% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-30% of a higher alkyl methacrylate having from four to twelve carbon atoms in the alkyl group; and B. about 5-25 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene.
Claim 7
Dependent Claim
123 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 50-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 15-35% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-30% of a higher alkyl methacrylate having from four to twelve carbon atoms in the alkyl group; and B. about 5-25 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene.
Claim 8
Dependent Claim
15 words
The styrene composition in accordance with claim 5, wherein said vinyl aromatic monomer is styrene.
Claim 9
Dependent Claim
16 words
The styrene composition in accordance with claim 6 wherein said higher alkyl methacrylate is n-butyl methacrylate.
Claim 10
Dependent Claim
27 words
The styrene composition in accordance with claim 7, wherein said selected rubber is a block copolymer of butadiene and styrene containing up to 50% by weight styrene.
Claim 11
Dependent Claim
144 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 25-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 5-70% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-60% of a higher alkyl methacrylate having from four to twelve carbon atoms in the alkyl group; B. about 2-30 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene; C. up to 50 parts by weight of inert solvent; and D. up to 2.0 parts by weight of free radical initiator.
Claim 12
Dependent Claim
144 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 25-75% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 5-70% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-60% of a higher alkyl methacrylate having from four to twelve carbon atoms in the alkyl group; B. about 2-30 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene; C. up to 50 parts by weight of inert solvent; and D. up to 2.0 parts by weight of free radical initiator.
Claim 13
Dependent Claim
17 words
The styrene composition in accordance with claim 9 wherein said selected vinyl aromatic monomer is unsubstituted styrene.
Claim 14
Dependent Claim
16 words
The styrene composition in accordance with claim 10, wherein said higher alkyl methacrylate is n-butyl methacrylate.
Claim 15
Dependent Claim
27 words
The styrene composition in accordance with claim 11, wherein said selected rubber is a block copolymer of butadiene and styrene containing up to 50% by weight styrene.
Claim 16
Dependent Claim
143 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 50-70% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 15-35% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-30% of a higher methacrylate having from four to 12 carbon atoms in the alkyl group; B. about 5-25 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene; C. up to 50 parts by weight of inert solvent; and D. up to 2.0 parts by weight of free radical initiator.
Claim 17
Dependent Claim
143 words
Polymeric styrene compositions having high optical transparency, impact strength and heat distortion temperature properties comprising the polymeric reaction product of: A. 100 parts by weight of a monomeric mixture of: (1) about 50-70% of at least one vinyl aromatic monomer selected from the group consisting of substituted and unsubstituted styrenes; (2) about 15-35% of at least one lower alkyl methacrylate selected from the group consisting of methyl and ethyl methacrylate; and (3) about 5-30% of a higher methacrylate having from four to 12 carbon atoms in the alkyl group; B. about 5-25 parts by weight of at least one rubber selected from the group consisting of polybutadiene and block copolymers of butadiene and styrene containing up to 50% by weight styrene; C. up to 50 parts by weight of inert solvent; and D. up to 2.0 parts by weight of free radical initiator.
Claim 18
Dependent Claim
15 words
The styrene composition in accordance with claim 13, wherein said vinyl aromatic monomer is styrene.
Claim 19
Dependent Claim
16 words
The styrene composition in accordance with claim 14, wherein said higher alkyl methacrylate is n-butyl methacrylate.
Claim 20
Dependent Claim
27 words
The styrene composition in accordance with claim 15, wherein said selected rubber is a block copolymer of butadiene and styrene containing up to 50% by weight styrene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |