US4387184A
Expired / Lapsed
US
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Heat stable polyphase polyamide compositions and preparation thereof
Assignee: Rhone Poulenc Industries SA
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Filing: 1980-12-05
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Granted: 1983-06-07
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Expires: 2000-12-05
Abstract
Abstract Provided are heat-stable polyphase polyamido compositions having improved mechanical properties which comprise (i) from 50 to 99% by weight of a nylon polyamide resin matrix and (ii) from 1 to 50% by weight of a particulate disperse phase comprising a polyamide incompatible with the polyamide resin matrix, and methods for the preparation thereof. Shaped articles comprising said compositions exhibit improved physical properties, particularly with regard to impact strength.
Inventors
- 👤 Jean Coquard
- 👤 Jean Goletto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
118 words
A heat-stable polyphase polyamido composition of matter having enhanced mechanical properties, comprising (i) from 55 to 99% by weight of a nylon polyamide resin matrix, the polyamide resin matrix having a number-average molecular weight of at least 5,000, and (ii) from 1 to 45% by weight of a particulate disperse phase comprising a polyamide sufficiently incompatible with the polyamide resin matrix to provide a polyphase composition, the particulates having a particle size ranging from 0.01 to 10 microns, and the disperse phase comprising a polyamide having a content in amide groups of less than 40% of the amide groups comprising said polyamide matrix resin and the disperse phase having a glass transition temperature of less than 5° C.
Claim 2
Dependent Claim
118 words
A heat-stable polyphase polyamido composition of matter having enhanced mechanical properties, comprising (i) from 55 to 99% by weight of a nylon polyamide resin matrix, the polyamide resin matrix having a number-average molecular weight of at least 5,000, and (ii) from 1 to 45% by weight of a particulate disperse phase comprising a polyamide sufficiently incompatible with the polyamide resin matrix to provide a polyphase composition, the particulates having a particle size ranging from 0.01 to 10 microns, and the disperse phase comprising a polyamide having a content in amide groups of less than 40% of the amide groups comprising said polyamide matrix resin and the disperse phase having a glass transition temperature of less than 5° C.
Claim 3
Dependent Claim
65 words
The composition of matter as defined by claim 1, comprising from 70 to 90% by weight of the matrix (i), the polyamide resin having a number-average molecular weight in excess of 10,000, from 10 to 30% by weight of the disperse phase (ii) comprising particulates having a particle size ranging from 0.05 to 3μ, and said polyamide having a glass transition temperature below -10° C.
Claim 4
Dependent Claim
18 words
The composition of matter as defined by claim 1, the polyamide matrix resin being polycaprolactam or polyhexamethylene adipamide.
Claim 5
Dependent Claim
20 words
The composition of matter as defined by claim 1, the disperse phase comprising a polyamide prepared from a dimeric acid.
Claim 6
Dependent Claim
18 words
The composition of matter as defined by claim 4, the dimeric acid containing at least 36 carbon atoms.
Claim 7
Dependent Claim
20 words
The composition of matter as defined by claim 1, the disperse phase comprising a polyamide prepared from a dimeric diamine.
Claim 8
Dependent Claim
18 words
The composition of matter as defined by claim 6, the dimeric diamine containing at least 36 carbon atoms.
Claim 9
Dependent Claim
29 words
The composition of matter as defined by claim 4, the disperse phase comprising a polyamide prepared from a polyamine comprising an ether group and at least 8 carbon atoms.
Claim 10
Dependent Claim
21 words
The composition of matter as defined by claim 4, the disperse phase comprising a polyamide prepared from a secondary bis-primary polyamine.
Claim 11
Dependent Claim
16 words
The composition of matter as defined by claim 9, the secondary bis-primary polyamine being bis-hexamethylene triamine.
Claim 12
Dependent Claim
28 words
The composition of matter as defined by claim 6, the disperse phase comprising a polyamide prepared from a mixture of a dimeric diamine and a second bis-primary polyamine.
Claim 13
Dependent Claim
31 words
The composition of matter as defined by claim 11, the disperse phase comprising a polyamide prepared from a mixture of a dimeric diamine containing at least 36 carbon atoms and bishexamethylenetriamine.
Claim 14
Dependent Claim
32 words
The composition of matter as defined by claim 4, the disperse phase comprising a polyamide prepared from a mixture of a dimeric acid and a polyacid having at least 3 functional groups.
Claim 15
Dependent Claim
15 words
The composition of matter as defined by claim 13, said polyacid being a trimeric acid.
Claim 16
Dependent Claim
66 words
The composition of matter as defined by claim 1, the disperse phase comprising a mixture of a polyamide and a statistical, block or graft copolymer derived from an unsaturated or polyunsaturated monomer containing groups which are reactive toward the polyamide in an amount ranging from 0.5 to 10 mol %, the groups being selected from the group consisting of acid, amino, anhydride, sulphonated and amido groups.
Claim 17
Dependent Claim
26 words
The composition of matter as defined by claim 15, the copolymer derived from an unsaturated monomer being a copolymer of ethylene, methacrylic acid or methacrylic esters.
Claim 18
Dependent Claim
92 words
A process for the preparation of the composition of matter as defined by claim 1 comprising subjecting a mixture of the polyamide matrix resin and disperse phase polyamide, the polyamide matrix resin and the disperse phase polyamide having a number-average molecular weight in excess of 5,000, to shearing conditions, in a closed system and at a temperature above the melting point of the polyamide matrix resin, sufficient to disperse the disperse phase polyamide in the polyamide matrix resin in the form of particles having a size ranging from 0.01 to 10 microns.
Claim 19
Dependent Claim
35 words
The process of claim 17 wherein the number-average molecular weight of the polyamide matrix resin is in excess of 10,000, and the number-average molecular weight of the disperse phase polyamide is in excess of 15,000.
Claim 20
Dependent Claim
40 words
The process of claim 17 wherein polycondensation of the polyamide matrix resin, same initially having a number-average molecular weight in excess of 2,000, is completed conjointly with the dispersion of the disperse phase polyamide, in a system equipped for degassing.
Claim 21
Dependent Claim
29 words
The process of claim 19 wherein polycondensation of the polyamide matrix resin and the disperse phase polyamide is carried out simultaneously with the dispersion of the disperse phase polyamide.
Claim 22
Dependent Claim
60 words
The process of claim 17 wherein polycondensation of the polyamide matrix resin is carried out conjointly with the dispersion of the disperse phase, which is carried out under shear conditions sufficient to result in the disperse phase being dispersed in the form of particles having a size ranging from 0.01 to 10 microns upon polycondensation of the polyamide matrix resin.
Claim 23
Dependent Claim
13 words
A shaped article comprising the composition of matter as defined by claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |