US4243575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filled thermoplastic resin compositions
Assignee: General Electric Co
•
Filing: 1979-07-25
•
Granted: 1981-01-06
•
Expires: 1999-07-25
Abstract
Abstract Filled thermoplastic resin compositions are provided wherein the filler component is compatible with and does not deleteriously affect the physical properties of the resin. The filler employed is a particulate, solid sphere which can be pre-treated with a surface active agent prior to being incorporated in the resin. The resin composition can also contain other ingredients such as impact modifiers, glass fillers, and the like.
Inventors
- 👤 Donald C. Myers
- 👤 Phillip S. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:30
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08J9/0061; C08K; C08K7/00; C08K7/16; C08K7/18; C08K7/20; C08J2369/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
92 words
A filled polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate resin and a particulate filler in an amount of about 2-40% by weight of the total weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 2
Dependent Claim
92 words
A filled polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate resin and a particulate filler in an amount of about 2-40% by weight of the total weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the amount of said particulate filler is about 10-30% by weight.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein said polycarbonate resin is derived from 2,2-bis(4-hydroxyphenyl)propane and has a melt flow of about 0.5-20.
Claim 5
Dependent Claim
22 words
The composition of claim 1 which includes an impact modifier in an amount of about 1-5% by weight of said polycarbonate composition.
Claim 6
Dependent Claim
24 words
The composition of claim 1 which includes a glass filler in an amount of up to about 20% by weight of said polycarbonate composition.
Claim 7
Dependent Claim
47 words
The composition of claim 1 wherein said particulate filler contains a surface active agent in amounts of up to about 2% by weight of said particulate filler, said surface active agent being a member selected from the group consisting of silanes, non-silane silicones, non-silicones, and mixtures thereof.
Claim 8
Dependent Claim
14 words
The composition of claim 6 wherein said surface active agent is a silicone fluid.
Claim 9
Dependent Claim
99 words
A filled polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate resin having a melt flow of about 0.5-20 and a particulate filler in an amount of about 2-40% by weight of the total weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 10
Dependent Claim
99 words
A filled polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate resin having a melt flow of about 0.5-20 and a particulate filler in an amount of about 2-40% by weight of the total weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 11
Dependent Claim
19 words
The composition of claim 8 wherein said particulate filler is present in an amount of about 10-30% by weight.
Claim 12
Dependent Claim
13 words
The composition of claim 8 wherein said polycarbonate resin is derived from 2,2-bis(4-hydroxyphenyl)propane.
Claim 13
Dependent Claim
22 words
The composition of claim 8, which includes an impact modifier in an amount of about 1-5% by weight of said polycarbonate composition.
Claim 14
Dependent Claim
24 words
The composition of claim 8 which includes a glass filler in an amount of up to about 20% by weight of said polycarbonate composition.
Claim 15
Dependent Claim
47 words
The composition of claim 8 wherein said particulate filler contains a surface active agent in amounts of up to about 2% by weight of said particulate filler, said surface active agent being a member selected from the group consisting of silanes, non-silane silicones, non-silicones, and mixtures thereof.
Claim 16
Dependent Claim
14 words
The composition of claim 13 wherein said surface active agent is a silicone fluid.
Claim 17
Dependent Claim
94 words
A foamed article obtained from a thermoplastic polycarbonate composition, said composition comprising an admixture of a high molecular weight aromatic polycarbonate resin and a particulate filler in an amount of about 2-40% by weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80lbs./ft 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 18
Dependent Claim
94 words
A foamed article obtained from a thermoplastic polycarbonate composition, said composition comprising an admixture of a high molecular weight aromatic polycarbonate resin and a particulate filler in an amount of about 2-40% by weight of said polycarbonate composition, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80lbs./ft 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8.
Claim 19
Dependent Claim
18 words
The foamed article of claim 15 wherein the amount of said particulate filler is about 10-30% by weight.
Claim 20
Dependent Claim
22 words
The foamed article of claim 15 wherein said polycarbonate resin is derived from 2,2-bis(4hydroxyphenyl)propane and has a melt flow of about 0.5-20.
Claim 21
Dependent Claim
23 words
The foamed article of claim 15 which includes an impact modifier in an amount of about 1-15% by weight of said polycarbonate composition.
Claim 22
Dependent Claim
25 words
The foamed article of claim 15 which includes a glass filler in an amount of up to about 20% by weight of said polycarbonate composition.
Claim 23
Dependent Claim
47 words
The composition of claim 15 wherein said particulate filler contains a surface active agent in amounts of up to about 2% by weight of said particulate filler, said surface active agent being a member selected from the group consisting of silanes, non-silane silicones, non-silicones, and mixtures thereof.
Claim 24
Dependent Claim
14 words
The composition of claim 20 wherein said surface active agent is a silicone fluid.
Claim 25
Dependent Claim
84 words
A particulate filler for use in thermoplastic resin compositions, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8; and, a surface active agent selected from the group consisting of silanes, non-silane silicones, non-silicones, and mixtures thereof.
Claim 26
Dependent Claim
84 words
A particulate filler for use in thermoplastic resin compositions, said particulate filler consisting essentially of an amorphous, alumino silicate glass recovered from flyash with the magnatile portion thereof removed and in the form of solid spheres having a specific gravity of about 2.4, a bulk density of about 75-80 lbs./ft. 3 , a mass median diameter of about 5-6 microns, and a pH of about 3-8; and, a surface active agent selected from the group consisting of silanes, non-silane silicones, non-silicones, and mixtures thereof.
Claim 27
Dependent Claim
26 words
The particulate filler of claim 22 wherein said surface active agent is present in amounts of up to about 2% by weight of said particulate filler.
Claim 28
Dependent Claim
15 words
The particulate filler of claim 22 wherein said surface active agent is a silicone fluid.
References Cited (Backward Citations)
USB520878I5
Cited
US4014849A
Cited
JPS5114852A
Cited
US4147707A
Cited
US4110299A
Cited
DE2721886A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |