US4097425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic formable blends, a foaming method and products made thereby
Assignee: General Electric Co
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Filing: 1976-03-22
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Granted: 1978-06-27
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Expires: 1996-03-22
Abstract
Abstract Foamable blends are provided of high performance thermoplastic polymers such as polycarbonates, polyesters, etc., and an effective amount of a dihydrooxadiazinone blowing agent. The blends can be melt extruded into pellets and sheet and converted into thermoplastic foam structures in accordance with conventional injection molding techniques.
Inventors
- 👤 George E. Niznik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:16
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C07; C07D; C07D273/00; C07D273/02; C07D273/04; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/83
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
20 words
A substantially uniform injection moldable foamable blend comprising thermoplastic organic polymer and from 0.1% to 25% by weight of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one.
Claim 2
Dependent Claim
20 words
A substantially uniform injection moldable foamable blend comprising thermoplastic organic polymer and from 0.1% to 25% by weight of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one.
Claim 3
Dependent Claim
18 words
An injection moldable concentrate in accordance with claim 1, having from 1% to 25% by weight of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one.
Claim 4
Dependent Claim
35 words
A substantially uniform injection moldable blend in accordance with claim 1 comprising a thermoplastic organic polymer and 0.1 to 1.0% of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one, which blend is convertible to a substantially uniform thermoplastic foam under molding conditions.
Claim 5
Dependent Claim
25 words
A blend as in claim 3, in the form of a dry powder mixture of finely divided resinous thermoplastic organic polymer and 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one blowing agent.
Claim 6
Dependent Claim
19 words
A blend as in claim 3, in the form of pellets of thermoplastic polymer coated with 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one blowing agent.
Claim 7
Dependent Claim
12 words
A blend as in claim 3, in the form of thermoplastic pellets.
Claim 8
Dependent Claim
13 words
A blend as in claim 3, in the form of a thermoplastic sheet.
Claim 9
Dependent Claim
12 words
A blend as in claim 1, in which the 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one is encapsulated.
Claim 10
Dependent Claim
12 words
A blend in accordance with claim 1, where the dihydrooxadiazinone is 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one.
Claim 11
Dependent Claim
12 words
A blend in accordance with claim 1, where the dihydrooxadiazinone is 3,6-dihydro-5,6-diphenyl-1,3,4-oxadiazin-2-one.
Claim 12
Dependent Claim
17 words
A blend in accordance with claim 1, where the thermoplastic organic polymer is a polycarbonate of 2,2-bis-(4-hydrophenyl)-propane.
Claim 13
Dependent Claim
15 words
A blend in accordance with claim 1, where the thermoplastic organic polymer is a polyalkylene(terephthalate).
Claim 14
Dependent Claim
16 words
A blend in accordance with claim 1, where the thermoplastic organic polymer is polyphenyleneoxide based resin.
Claim 15
Dependent Claim
64 words
A substantially uniform injection moldable foamable blend comprising a 5-phenyl-3,6-dihydro-1,3,4-oradiazin-2-one and thermoplastic organic polymeric material having at least 5% by weight of chemically combined haloalkylene polycarbonate units of the formula, ##STR7## where R 5 and R 6 are the same or different divalent aromatic radicals having from 6-13 carbon atoms, X is a halogen atom and X 1 is selected from X and hydrogen.
Claim 16
Dependent Claim
64 words
A substantially uniform injection moldable foamable blend comprising a 5-phenyl-3,6-dihydro-1,3,4-oradiazin-2-one and thermoplastic organic polymeric material having at least 5% by weight of chemically combined haloalkylene polycarbonate units of the formula, ##STR7## where R 5 and R 6 are the same or different divalent aromatic radicals having from 6-13 carbon atoms, X is a halogen atom and X 1 is selected from X and hydrogen.
Claim 17
Dependent Claim
22 words
A blend in accordance with claim 14, where the organic polymeric material is a polycarbonate consisting essentially of 1,1-dichloro-2,2-bis(4-hydroxyphenyl) ethylene carbonate units.
Claim 18
Dependent Claim
27 words
A blend in accordance with claim 14, where the organic polymeric material is a copolymer consisting essentially of chemically combined 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene carbonate units and 2,2-bis(4-hydroxyphenyl)propane carbonate units.
Claim 19
Dependent Claim
10 words
A glass fiber reinforced blend in accordance with claim 14.
Claim 20
Dependent Claim
24 words
A foamable composition in accordance with claim 14, where the organic polymeric material is a blend of a haloethylene polycarbonate and an acrylonitrile-butadiene-styrene terpolymer.
Claim 21
Dependent Claim
24 words
A foamable composition in accordance with claim 14, where the organic polymeric material is a blend of a haloethylene-bisphenol polycarbonate and an isopropylidene-bisphenol polycarbonate.
Claim 22
Dependent Claim
24 words
Thermoplastic pellets comprising a 2,2-bis (4-hydroxyphenyl)propane polycarbonate resin and about 0.1 to 1.0% by weight of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one, based on the weight of the pellets.
Claim 23
Dependent Claim
24 words
Thermoplastic pellets comprising a 2,2-bis (4-hydroxyphenyl)propane polycarbonate resin and about 0.1 to 1.0% by weight of 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one, based on the weight of the pellets.
Claim 24
Dependent Claim
24 words
Thermoplastic pellets consisting essentially of a polyalkylene terephthalate and about 0.1 to 1.0% by weight of 3,6-dihydro-5,6-diphenyl-1,3,4-oxadiazine-2-one based on the weight of the pellets.
Claim 25
Dependent Claim
24 words
Thermoplastic pellets consisting essentially of a polyalkylene terephthalate and about 0.1 to 1.0% by weight of 3,6-dihydro-5,6-diphenyl-1,3,4-oxadiazine-2-one based on the weight of the pellets.
Claim 26
Dependent Claim
43 words
A substantially uniform injection moldable foamable blend comprising thermoplastic organic polymer and 0.1% to 25% by weight of a dihydrooxadiazinone, where the thermoplastic organic polymer is selected from the class consisting of polyalkylene terephthalates, polycarbonates, polyamides, polyester-polyether copolymers, polycarbonate copolymers and blends thereof.
Claim 27
Dependent Claim
43 words
A substantially uniform injection moldable foamable blend comprising thermoplastic organic polymer and 0.1% to 25% by weight of a dihydrooxadiazinone, where the thermoplastic organic polymer is selected from the class consisting of polyalkylene terephthalates, polycarbonates, polyamides, polyester-polyether copolymers, polycarbonate copolymers and blends thereof.
Claim 28
Dependent Claim
19 words
An injection moldable concentrate in accordance with claim 22, having from 1% to 25% by weight of the dihydro-oxadiazinone.
Claim 29
Dependent Claim
36 words
A substantially uniform injection moldable blend in accordance with claim 22 comprising a thermoplastic organic polymer and 0.1 to 1.0% of a dihydrooxadiazinone, which blend is convertible to a substantially uniform thermoplastic foam under molding conditions.
Claim 30
Dependent Claim
25 words
A blend as in claim 24, in the form of a dry powder mixture of finely divided resinous thermoplastic organic polymer and dihydrooxadiazinone blowing agent.
Claim 31
Dependent Claim
19 words
A blend as in claim 24, in the form of pellets of thermoplastic polymer coated with dihydrooxadiazinone blowing agent.
Claim 32
Dependent Claim
12 words
A blend as in claim 24, in the form of thermoplastic pellets.
Claim 33
Dependent Claim
13 words
A blend as in claim 24, in the form of a thermoplastic sheet.
Claim 34
Dependent Claim
12 words
A blend as in claim 22, in which the dihydrooxadiazinone is encapsulated.
Claim 35
Dependent Claim
17 words
A blend in accordance with claim 22, where the thermoplastic organic polymer is a polycarbonate of 2,2-bis-(4-hydroxyphenyl)-propane.
Claim 36
Dependent Claim
15 words
A blend in accordance with claim 22, where the thermoplastic organic polymer is a polyalkylene(terephthalate).
Claim 37
Dependent Claim
17 words
A blend in accordance with claim 22, where the thermoplastic organic polymer is a polyphenyleneoxide based resin.
References Cited (Backward Citations)
US3779954A
Cited
US3781233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |