US3907930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toughened polymeric polyblend having high flow and ductility
Assignee: Monsanto Co
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Filing: 1973-11-09
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Granted: 1975-09-23
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Expires: 1993-11-09
Abstract
Abstract The present invention relates to a toughened polymeric polyblend having high flow and ductility comprising a polymer of polyvinylidene aromatic monomer having dispersed therein a diene rubber grafted with said monomer and a block copolymer of said monomer and a diene monomer, said block copolymer comprising about 55 to 90 weight percent of a monovinylidene aromatic monomer and about 10-45 weight percent of a diene monomer.
Inventors
- 👤 Vincent J O'grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:58
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08L; C08L51/00; C08L51/04; Y; Y10; Y10S; Y10S525/00; Y10S525/931
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
41 words
A POLYMERIC POLYBLEND HAVING HIGH MELT FLOW AND DUCTILITY COMPRISING, BASED ON THE TOTAL WEIGHT OF THE POLYMERIC COMPONENTS, OF: A. ABOUT 55 TO 98 WEIGHT PERCENT OF A MONOALKENYL AROMATIC POLYMER, COMPRISING AT LEAST ONE MONOALKENY ATOMATIC OF THE FORMULA:
Claim 2
Dependent Claim
41 words
A POLYMERIC POLYBLEND HAVING HIGH MELT FLOW AND DUCTILITY COMPRISING, BASED ON THE TOTAL WEIGHT OF THE POLYMERIC COMPONENTS, OF: A. ABOUT 55 TO 98 WEIGHT PERCENT OF A MONOALKENYL AROMATIC POLYMER, COMPRISING AT LEAST ONE MONOALKENY ATOMATIC OF THE FORMULA:
Claim 3
Dependent Claim
16 words
A polymer of claim 1, wherein at least one of said monoalkenyl aromatic monomer is styrene.
Claim 4
Dependent Claim
17 words
A polyblend of claim 1, wherein at least one of said monoalkenyl aromatic monomer is alphamethyl styrene.
Claim 5
Dependent Claim
16 words
A polyblend of claim 1, wherein at least one of said monoalkenyl aromatic monomer is chlorostyrene.
Claim 6
Dependent Claim
16 words
A polyblend of claim 1, wherein at least one of said monoalkenyl aromatic monomer is bromostyrene.
Claim 7
Dependent Claim
31 words
A polyblend of claim 1, wherein said diene rubber is selected from the group consisting of polybutadiene, polyisoprene, polychloroprene and butadiene styrene, butadiene acrylonitrile, butadiene-alpha methyl styrene copolymers or mixtures thereof.
Claim 8
Dependent Claim
29 words
A polyblend of claim 1, wherein said diene monomer is selected from the group consisting of, butadiene, isoprene, 2 chloro-1,3 butadiene, 1 chloro-1,3 butadiene and piperlyene or mixtures thereof.
Claim 9
Dependent Claim
33 words
A polyblend of claim 1, wherein said second block moiety of said block copolymer has an average particle size diameter, as dispersed in said polymeric polyblend, of from about 0.004 to 0.05 microns.
Claim 10
Dependent Claim
70 words
A polyblend of claim 1, wherein said diene rubber is a stereospecific polybutadiene rubber having a cis-isomer content of about 30 to 98 percent, a trans-isomer content of about 70-2 percent, Mooney viscosity of about 20* to 70 (ML-4 212*F.), at least about 85 percent of polybutadiene formed by 1,4 addition with no more than 15 perrcent by 1,2 addition and a Tg range of from about -50*C. to -105*C.
Claim 11
Dependent Claim
20 words
A polyblend of claim 1, wherein said monoalkenyl aromatic polymer has an average molecular weight of 20,000 to 100,000 Staudinger.
Claim 12
Dependent Claim
19 words
A polyblend of claim 1, wherein said block copolymer has an average molecular weight of 20,000 to 100,000 Staudinger.
Claim 13
Dependent Claim
98 words
A polyblend of claim 1, wherein the monoalkenyl aromatic monomer is styrene, the diene rubber is polybutadiene, the diene monomer is butadiene and wherein said grafted diene rubber particles has said grafted and said occluded polymer present in an amount of 0.5 to 4 parts to 1 part of rubber, are crosslinked having a swelling index of 5-25 and a weight average particle size diameter of 0.1 to 20.0 microns and said second block moiety of said block copolymer has an average particle size diameter, as dispersed in said polymeric polyblend, of from about 0.004 to 0.05 microns.
Claim 14
Independent Claim
35 words
A method of improving the flow and ductility of a polymeric polyblend of: A. about 55 to 98 weight percent of a monoalkenyl aromatic polymer, comprising at least one monoalkenyl aromatic monomer of the formula:
Claim 15
Independent Claim
35 words
A method of improving the flow and ductility of a polymeric polyblend of: A. about 55 to 98 weight percent of a monoalkenyl aromatic polymer, comprising at least one monoalkenyl aromatic monomer of the formula:
Claim 16
Dependent Claim
16 words
A method of claim 13, wherein at least one of said monoalkenyl aromatic monomer is styrene.
Claim 17
Dependent Claim
31 words
A method of claim 13, wherein said diene rubber is selected from the group consisting of polybutadiene, polyisoprene, polychloroprene and butadiene styrene, butadiene acrylonitrile, butadiene-alpha methyl styrene copolymers or mixtures thereof.
Claim 18
Dependent Claim
29 words
A method of claim 13, wherein said diene monomer is selected from the group consisting of butadiene, isoprene, 2 chloro-1,3 butadiene, 1 chloro-1,3 butadiene and piperlyene or mixtures thereof.
Claim 19
Dependent Claim
33 words
A method of claim 13, wherein said second block moiety of said block copolymer has an average particle size diameter, as dispersed in said polymeric polyblend, of from about 0.004 to 0.05 microns.
Claim 20
Dependent Claim
70 words
A method of claim 13, wherein said diene rubber is a stereospecific polybutadiene rubber having a cis-isomer content of about 30 to 98 percent, a trans-isomer content of about 70-2 percent, Mooney viscosity of about 20 to 70 (ML-4 212*F.), at least about 85 percent of polybutadiene formed by 1,4 addition with no more than 15 percent by 1,2 addition and a Tg range of from about -50*C. to -105*C.
Claim 21
Dependent Claim
20 words
A method of claim 13, wherein said monoalkenyl aromatic polymer has an average molecular weight of 10,000 to 100,000 Staudinger.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |