US3773708A
Expired / Lapsed
US
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Composition of novel modified filler and resin
Assignee: Mitsubishi Chemical Corp
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Filing: 1972-01-21
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Granted: 1973-11-20
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Expires: 1992-01-21
Abstract
Abstract Filler modified plastic, rubber or thermosetting resin compositions are prepared by admixing a thermoplastic resin, thermo-setting resin or rubber with a modified filler, produced by polymerizing a free radical polymerizable or ionic polymerizable monomer, onto the surface of the filler.
Inventors
- 👤 H Takahashi
- 👤 H Yui
- 👤 T Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:33
CPC Classifications
C; C08; C08F; C08F292/00; C08K; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The process of claim 1, wherein the crushing is conducted at a temperature of higher than the melting point of the polymerizable monomer.
Claim 2
Dependent Claim
20 words
The process of claim 1, wherein the crushing is conducted in a solution of the monomer in an organic solvent.
Claim 3
Dependent Claim
27 words
The process of claim 1, wherein the radical polymerization or ionic polymerizable monomer is used in amounts of greater than 0.005 percent by weight of the filler.
Claim 4
Dependent Claim
29 words
The process of claim 1, wherein the modified filler is used in an amount of less than 30 percent by weight based on the total weight of the composition.
Claim 5
Dependent Claim
29 words
The process of claim 1, wherein the modified filler is used in an amount of more than 30 percent by weight based on the total weight of the composition.
Claim 6
Dependent Claim
29 words
The process of claim 1, wherein the modified filler is used in an amount of more than 50 percent by weight based on the total weight of the composition.
Claim 7
Dependent Claim
28 words
The process of claim 1, wherein two or more inorganic fillers, each having different hardnesses and particle sizes, are mutually crushed in the presence of the polymerizable monomer.
Claim 8
Dependent Claim
26 words
The process of claim 1, wherein said inorganic filler is selected from the group consisting of calcium carbonate, magnesium carbonate, calcium sulfate, sodium carbonate, and dolomite.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the crushing is made in a substantially moisture-free environment.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |