US4386169A
Expired / Lapsed
US
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Polymer matrices reinforced with calcium carbonate particulates
Assignee: Rhone Poulenc Industries SA
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Filing: 1981-04-21
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Granted: 1983-05-31
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Expires: 2001-04-21
Abstract
Abstract Elastomeric/polymeric matrices, e.g., rigid polyvinyl chloride resins, are reinforced with impact strength enhancing amounts of calcium carbonate filler particulates, said particulates being surface area treated with both an organic sulfonic acid or salt thereof, and a fatty acid or salt thereof. The resultant compositions are well adapted for the fabrication of strong, useful shaped articles therefrom.
Inventors
- 👤 Andre Artur
- 👤 Alain Dehut
- 👤 Pierre Canard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/02; C09C1/021; C08; C08K; C08K9/00; C08K9/04; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/60; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
88 words
In a composition of matter comprising a polyvinyl chloride resin and a reinforcing amount of filler material therefor, the improvement which comprises, as said filler material, calcium carbonate particulates which are surface area treated with an impact strength enhancing amount of both (i) a sulfonic acid or salt thereof, and (ii) a fatty acid or salt thereof, said calcium carbonate particulates having a particle size ranging from 0.05 N to 10 N, and a BET specific surface ranging from 50 m 2 /g to 0.2 m 2 /g.
Claim 2
Dependent Claim
88 words
In a composition of matter comprising a polyvinyl chloride resin and a reinforcing amount of filler material therefor, the improvement which comprises, as said filler material, calcium carbonate particulates which are surface area treated with an impact strength enhancing amount of both (i) a sulfonic acid or salt thereof, and (ii) a fatty acid or salt thereof, said calcium carbonate particulates having a particle size ranging from 0.05 N to 10 N, and a BET specific surface ranging from 50 m 2 /g to 0.2 m 2 /g.
Claim 3
Dependent Claim
35 words
The composition of matter as defined by claim 1, said particle size ranging from 0.07 N to 1 N, and said BET specific surface ranging from 35 m 2 /g to 2 m 2 /g.
Claim 4
Dependent Claim
19 words
The composition of matter as defined by claim 1, said calcium carbonate particulates comprising finely ground natural calcium carbonate.
Claim 5
Dependent Claim
18 words
The composition of matter as defined by claim 1, said calcium carbonate particulates comprising chemically precipitated calcium carbonate.
Claim 6
Dependent Claim
42 words
The composition of matter as defined by claim 1, said sulfonic acid or salt thereof comprising an alkyl or alkylarylsulfonic acid or salt thereof, the alkyl radicals of which containing from 8 to 25 carbon atoms and aryl being phenyl and naphthyl.
Claim 7
Dependent Claim
21 words
The composition of matter as defined by claim 7, said sulfonic acid or salt thereof being dodecylbenzenesulfonic acid or salt thereof.
Claim 8
Dependent Claim
27 words
The composition of matter as defined by claim 7, said sulfonic acid or salt thereof comprising from 0.03 to 8% by weight of the calcium carbonate particulates.
Claim 9
Dependent Claim
45 words
The composition of matter as defined by claim 1, the calcium carbonate particulates being surface area treated with an amount of sulfonic acid or salt thereof less than that as would form a monomolecular layer of same over the entire surface area of said particulates.
Claim 10
Dependent Claim
50 words
The composition of matter as defined by claim 8, said particulates having been treated with an amount of sulfonic acid or salt thereof ranging from 20 to 99% by weight of that theoretical amount as would form a monomolecular layer of same over the entire surface area of said particulates.
Claim 11
Dependent Claim
50 words
The composition of matter as defined by claim 9, said particulates having been treated with an amount of sulfonic acid or salt thereof ranging from 30 to 60% by weight of that theoretical amount as would form a monomolecular layer of same over the entire surface area of said particulates.
Claim 12
Dependent Claim
29 words
The composition of matter as defined by claim 5, said fatty acid or salt thereof comprising an aliphatic carboxylic acid or salt thereof having greater than 10 carbon atoms.
Claim 13
Dependent Claim
21 words
The composition of matter as defined by claim 11, said fatty acid or salt thereof being stearic acid or salt thereof.
Claim 14
Dependent Claim
42 words
The composition of matter as defined by claim 12, said calcium carbonate particulates having a specific surface ranging from 10 to 50 m 2 /g, and said stearic acid or salt thereof comprising from 1 to 8% by weight of said particulates.
Claim 15
Dependent Claim
20 words
The composition of matter as defined by claim 13, said specific surface ranging from 20 to 40 m 2 /g.
Claim 16
Dependent Claim
45 words
The composition of matter as defined by claim 8, the calcium carbonate particulates being surface area treated with an amount of fatty acid or salt thereof less than that as would form a monomolecular layer of same over the entire surface area of said particulates.
Claim 17
Dependent Claim
30 words
The composition of matter as defined by claim 1, comprising from 1 to 60 parts by weight of filler material per 100 parts by weight of rigid polyvinyl chloride resin.
Claim 18
Dependent Claim
28 words
The composition of matter as defined by claim 16, comprising about 20 parts by weight of filler material per 100 parts by weight of rigid polyvinyl chloride resin.
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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) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |