US4336301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filler material
Assignee: Union Carbide Chemicals and Plastics Technology LLC
•
Filing: 1980-10-20
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Granted: 1982-06-22
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Expires: 2000-10-20
Abstract
Abstract A filler material for thermoplastic polymers which increases the flexural modulus of the resulting filled system along with increasing the percent elongation to fracture is prepared by mixing a major amount of a mica-like, mineral sheet silicate and a minor amount of an additive such that the resulting surface of the sheet silicate possesses protrusions or nodules.
Inventors
- 👤 Robert B. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/02; C08K9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/254; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/2998
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
A filler material for thermoplastic polymers comprising a mica-like, mineral sheet silicate having attached on a minor portion of the surfaces of said sheet silicate microscopic-size protrusions of a solid additive, wherein said additive has: (a) a melting point below the decomposition point of said sheet silicate, (b) a contact angle such that said additive wets the surface of said sheet silicate, and (c) said additive upon cooling from a melt forms a solid material.
Claim 2
Dependent Claim
75 words
A filler material for thermoplastic polymers comprising a mica-like, mineral sheet silicate having attached on a minor portion of the surfaces of said sheet silicate microscopic-size protrusions of a solid additive, wherein said additive has: (a) a melting point below the decomposition point of said sheet silicate, (b) a contact angle such that said additive wets the surface of said sheet silicate, and (c) said additive upon cooling from a melt forms a solid material.
Claim 3
Dependent Claim
22 words
The filler according to claim 1 wherein said sheet silicate is selected from the group consisting of montmorillonite, vermiculite, mica and talc.
Claim 4
Dependent Claim
12 words
The filler according to claim 2 wherein said sheet silicate is mica.
Claim 5
Dependent Claim
19 words
The filler according to claims 1 or 2 wherein said additive is glass in the form of glass beads.
Claim 6
Dependent Claim
41 words
The filler according to claim 4 wherein the thermal coefficient of expansion of said glass is slightly less than or equal to the thermal coefficient of expansion of said sheet silicate, measured parallel to the cleavage plane of said sheet silicate.
Claim 7
Dependent Claim
11 words
The filler of claim 5 wherein said glass is soda-lime glass.
Claim 8
Dependent Claim
15 words
The filler according to claims 1 or 2 wherein said additive is an epoxy resin.
Claim 9
Dependent Claim
15 words
A filler polymeric material comprising a thermoplastic polymer and the filler material of claim 1.
Claim 10
Dependent Claim
28 words
The filled polymeric material of claim 8 wherein said thermoplastic polymer is selected from the group consisting of polystyrene, polyethylene, polypropylene, polybutene-1, nylon, poly(ethylene terephthalate), and copolymers thereof.
Claim 11
Dependent Claim
13 words
The filled polymeric material of claim 9 wherein said thermoplastic polymer is polypropylene.
Claim 12
Dependent Claim
52 words
A filler material for thermoplastic polymers prepared by mixing a major amount of a mica-like, mineral sheet silicate and a minor amount of an additive at a temperature above the melting point of said additive, followed by cooling the resulting mixture, therein forming microscopic protrusions on the surfaces of said sheet silicate.
Claim 13
Dependent Claim
52 words
A filler material for thermoplastic polymers prepared by mixing a major amount of a mica-like, mineral sheet silicate and a minor amount of an additive at a temperature above the melting point of said additive, followed by cooling the resulting mixture, therein forming microscopic protrusions on the surfaces of said sheet silicate.
Claim 14
Dependent Claim
22 words
The filler material of claim 11 wherein said sheet silicate is selected from the group consisting of montmorillonite, vermiculite, mica and talc.
Claim 15
Dependent Claim
12 words
The filler material of claim 12 wherein said sheet silicate is mica.
Claim 16
Dependent Claim
15 words
The filler material of claims 11 or 12 wherein said additive is an epoxy resin.
Claim 17
Dependent Claim
84 words
The filler material according to claim 14 wherein said additive, and said sheet silicate are mixed together at an initial temperature between the melting point of said additive and 50° C. above the melting point of said additive for time sufficient to at least partially cure said additive, after which the mixing temperature is raised to a temperature between about 10° C. and about 150° C. above said melting point until the additive curing is complete, after which the resulting filler material is cooled.
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |