US4528303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer/filler molding compositions
Assignee: NYLTECH SA
•
Filing: 1983-05-24
•
Granted: 1985-07-09
•
Expires: 2003-05-24
Abstract
Abstract Molding compositions for the fabrication of shaped articles having enhanced mechanical properties are comprised of (i) a polymeric matrix, (ii) an inorganic reinforcing filler material therefor, and, advantageously, (iii) a polymer/filler coupling agent, said reinforcing filler material consisting essentially of intimate admixture of enstatite and silica advantageously prepared by calcination of a precursor clay at a temperature of at least 800 DEG C.
Inventors
- 👤 Christian Segaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:43
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K3/00; C08K3/34; C08K3/346; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/305; C08J2377/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
45 words
A moldable composition of matter comprising (i) a polymeric matrix and (ii) an inorganic reinforcing filler therefor, said reinforcing filler consisting essentially of an intimate admixture of enstatite and silica prepared by calcination of a precursor clay at a temperature of at least 800° C.
Claim 2
Dependent Claim
45 words
A moldable composition of matter comprising (i) a polymeric matrix and (ii) an inorganic reinforcing filler therefor, said reinforcing filler consisting essentially of an intimate admixture of enstatite and silica prepared by calcination of a precursor clay at a temperature of at least 800° C.
Claim 3
Dependent Claim
16 words
The composition of matter as defined by claim 1, further comprising (iii) a polymer/filler coupling agent.
Claim 4
Dependent Claim
23 words
The composition of matter as defined by claim 1 or 2, said precursor clay comprising chlorite, illite, palygorskite, saponite, talc, or mixtures thereof.
Claim 5
Dependent Claim
14 words
The composition of matter as defined by claim 3, said precursor clay comprising talc.
Claim 6
Dependent Claim
19 words
The composition of matter as defined by claims 1 or 2, said polymeric matrix (i) comprising a thermoplastic polymer.
Claim 7
Dependent Claim
16 words
The composition of matter as defined by claim 5, said polymeric matrix (i) comprising a polyolefin.
Claim 8
Dependent Claim
16 words
The composition of matter as defined by claim 5, said polymeric matrix (i) comprising a polyamide.
Claim 9
Dependent Claim
16 words
The composition of matter as defined by claim 5, said polymeric matrix (i) comprising a polycarbonate.
Claim 10
Dependent Claim
19 words
The composition of matter as defined by claims 1 or 2, said polymeric matrix (i) comprising a thermosetting polymer.
Claim 11
Dependent Claim
17 words
The composition of matter as defined by claim 9, said polymeric matrix (i) comprising a phenolic resin.
Claim 12
Dependent Claim
16 words
The composition of matter as defined by claim 9, said polymeric matrix (i) comprising a polyimide.
Claim 13
Dependent Claim
19 words
The composition of matter as defined by claims 1 or 2, said polymeric matrix (i) comprising an elastomeric polymer.
Claim 14
Dependent Claim
16 words
The composition of matter as defined by claim 12, said polymeric matrix (i) comprising a polychloroprene.
Claim 15
Dependent Claim
17 words
The composition of matter as defined by claim 12, said polymeric matrix (i) comprising an elastomeric silicone.
Claim 16
Dependent Claim
44 words
The composition of matter defined by claim 2, said coupling agent (iii) comprising a polyfunctional organosilicon compound containing at least one alkoxysilane moiety adapted to bond to the reinforcing filler (ii) and at least one moiety adapted to bond to the polymeric matrix (i).
Claim 17
Dependent Claim
62 words
The composition of matter as defined by claims 1 or 2, the amount of the reinforcing filler (ii) comprising from 2 to 90% by weight of the total weight of the polymeric matrix (i) plus reinforcing filler (ii), and the amount of coupling agent (iii), when present, comprising from 0.3 to 4% by weight of the weight of said reinforcing filler (ii).
Claim 18
Dependent Claim
63 words
A process for the preparation of the composition of matter as defined by claims 1 or 2, said polymeric matrix (i) comprising a thermoplastic or thermosetting polymer, which process comprises first intimately admixing the various constituents thereof by agitation, at ambient temperature, in a powder mixer, and thence homogenizing the intimate admixture which results by hot malaxation in a single-screw or multi-screw extruder.
Claim 19
Dependent Claim
40 words
A process for the preparation of the composition of matter as defined by claims 1 or 2, said polymeric matrix (i) comprising an elastomeric polymer, which process comprises intimately admixing the various constituents thereof directly in a heated slow mixer.
Claim 20
Dependent Claim
51 words
The process as defined by claim 17, said reinforcing filler (ii) having been preliminarily coated with coupling agent (iii), said coupling agent (iii) comprising a polyfunctional organosilicon compound containing at least one alkoxysilane moiety adapted to bond thereto, and at least one moiety adapted to bond to the polymeric matrix (i).
Claim 21
Dependent Claim
16 words
A molded shaped article comprising the composition of matter as defined by claims 1 or 2.
References Cited (Backward Citations)
US3419517A
Cited
USRE28646E
Cited
US4211690A
Cited
US4229504A
Cited
US4255303A
Cited
JPS5718747A
Cited
US4430157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |