US3773707A
Expired / Lapsed
US
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Polyamide molding composition containing plagioclase feldspar
Assignee: Bayer AG
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Filing: 1972-03-24
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Granted: 1973-11-20
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Expires: 1992-03-24
Abstract
Abstract Filler-containing polyamide mixtures of improved impact strength said fillers being minerals from the feldspar group, and a process for the production of said polyamide mixtures. The content of the filler material is of from 1 to 70 percent, preferably of from 10 to 50 percent, by weight based on the total mixture. Additionally, the mixture can contain an organosilicon compound in an amount of from 0.001 to 1 percent by weight, based on the mineral, of the feldspar group as adhesion promoter.
Inventors
- 👤 K Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:18
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
24 words
The composition according to claim 1, wherein said mineral from the plagioclase feldspar group has an average particle diameter of less than 0.05 mm.
Claim 2
Dependent Claim
31 words
The composition according to claim 1, wherein the content of said mineral from the plagioclase feldspar group is of from 10 to 50 percent by weight based on the total composition.
Claim 3
Dependent Claim
12 words
The composition accorDing to claim 1, wherein the plagioclase feldspar is labradorite.
Claim 4
Dependent Claim
26 words
A composition of matter according to claim 1, comprising a polyamide, a mineral from the plagioclase feldspar group and additionally an organosilicon compound as adhesion promoter.
Claim 5
Dependent Claim
31 words
The composition according to claim 5, wherein the content of said organosilicon compound is of from 0.001 to 1 percent by weight based on said mineral from the plagioclase feldspar group.
Claim 6
Dependent Claim
31 words
The composition according to claim 5, wherein the content of the organosilicon compound is of from 0.01 to 0.5 percent by weight based on said mineral from the plasioclase feldspar group.
Claim 7
Dependent Claim
16 words
The composition according to claim 5, wherein said organosilicon compound is a gamma -aminopropyl trialkoxy silane.
Claim 8
Dependent Claim
11 words
The composition according to claim 1, wherein said polyamide is polycaprolactam.
Claim 9
Dependent Claim
58 words
The composition of matter of claim 1 in which said polyamide is polycaprolactam, said plagioclase feldspar is labradorite having a particle size of less than 0.05 mm., labradorite comprising 1 percent to 70 percent by weight of the composition said composition also containing 0.01 to 0.5 percent by weight based on the labradorite of gamma -aminopropyl triethoxy silane.
Claim 10
Dependent Claim
44 words
A process for the production of filler-containing polyamide mixtures which comprises adding to polyamide material 1 to 70 percent by weight based on the total composition of a mineral from the plagioclase feldspar group having an average particle diameter of less than 0.1 mm.
Claim 11
Dependent Claim
14 words
The process according to claim 11, wherein said polyamide material is a polyamide melt.
Claim 12
Dependent Claim
23 words
The process according to claim 11, wherein said polyamide material is a melt of polyamide-forming starting material and polymerising the mixture thus obtained.
Claim 13
Dependent Claim
32 words
The process according to claim 11, wherein an organo-silicon compound is added as adhesion promoter to said mineral from the plagioclase feldspar group before said mineral is added to the polyamide material.
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 |