US5336732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming polyamide/poly(phenylene ether) blends
Assignee: Honeywell International Inc
•
Filing: 1993-02-12
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Granted: 1994-08-09
•
Expires: 2013-02-12
Abstract
Abstract A process for forming a blend comprising a poly(phenylene ether) domains dispersed in a polyamide matrix, said process comprising the steps of: (a) forming a reaction mixture comprising a substituted or unsubstituted poly(phenylene ether), preferably one or more compatibilizers and a polyamide precursor; and (b) polymerizing said precursor to form a blend comprised polyamide matrix having poly(phenylene ether) domains dispersed therein.
Inventors
- 👤 George J. Samuels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:52
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A process for forming a blend comprising a poly(phenylene ether) domains dispersed in a polyamide matrix, said process comprising the steps of: (a) forming a reaction mixture comprising a substituted or unsubstituted poly(phenylene ether) and a polyamide; and (b) polymerizing said precursor to form a blend comprising a polyamide matrix having poly(phenylene ether) domains dispersed therein, wherein the average diameter of said poly(phenylene ether) domains is from about 0.4 to about 4 microns with a maximum diameter of not more than about 6 microns and wherein said poly(phenylene ether) domains include occluded polyamide domains.
Claim 2
Dependent Claim
94 words
A process for forming a blend comprising a poly(phenylene ether) domains dispersed in a polyamide matrix, said process comprising the steps of: (a) forming a reaction mixture comprising a substituted or unsubstituted poly(phenylene ether) and a polyamide; and (b) polymerizing said precursor to form a blend comprising a polyamide matrix having poly(phenylene ether) domains dispersed therein, wherein the average diameter of said poly(phenylene ether) domains is from about 0.4 to about 4 microns with a maximum diameter of not more than about 6 microns and wherein said poly(phenylene ether) domains include occluded polyamide domains.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said polyamide precursor is a lactam.
Claim 4
Dependent Claim
21 words
The process of claim 2 wherein said lactam is selected from the group consisting of caproyl lactam, lauryl lactam and caprolactam.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein said lactam is caprolactam.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said reaction mixture further comprises a compatibilizer.
Claim 7
Dependent Claim
62 words
The process of claim 1 wherein said poly(phenylene ether) is selected from the group consisting of those having recurring units of the formula: ##STR3## wherein: n is an integer equal to or greater than about 20; and R a , R b , R c and R d are the same or different and are hydrogen, alkyl, alkoxy, phenoxy, phenyl or halo.
Claim 8
Dependent Claim
56 words
The process of claim 6 wherein: R a and R d are hydrogen; n is equal to or greater than about 50; and R b and R c are the same or different and are alkyl, phenyl or hydrogen, with the proviso that at least one of R b and R c is other than hydrogen.
Claim 9
Dependent Claim
13 words
The process of claim 7 wherein R b and R c are alkyl.
Claim 10
Dependent Claim
22 words
The process of claim 8 wherein R b and R c are the alkyl having from 1 to about 4 carbon atoms.
Claim 11
Dependent Claim
13 words
The process of claim 4 wherein R b and R c are methyl.
Claim 12
Dependent Claim
32 words
The process of claim 1 wherein the amount of poly(phenylene ether) contained in said blend is from about 5 to about 30% by weight of polyamide and poly(phenylene ether) in the blend.
Claim 13
Dependent Claim
31 words
A process of claim 1 wherein said occluded polyamide domains have an average diameter from about 0.1 microns to about 0.5 microns with a maximum domain diameter of about 0.6 microns.
Claim 14
Dependent Claim
58 words
The process of claim 12 wherein the average diameter of said poly(phenylene ether) domains is preferably from about 0.6 microns to about 4 microns with a maximum diameter of about 5 microns, and the average diameter of said occluded polyamide domains is from about 0.4 microns to about 0.2 microns with a maximum diameter of about 0.5 microns.
Claim 15
Dependent Claim
57 words
The process of claim 13 wherein the average diameter of said poly(phenylene ether) domains is from about 0.6 microns to about 3 microns with a maximum diameter of about 4 micron and the average diameter of said occluded polyamide domains is from about 0.3 microns to about 0.2 microns with a maximum diameter of about 5 microns.
Claim 16
Dependent Claim
57 words
The process of claim 14 wherein the average diameter of said poly(phenylene ether) domains is from about 0.6 microns to about 2 microns with a maximum diameter of about 3 microns and the average diameter of said occluded polyamide domain is from about 0.1 microns to about 0.2 microns with a maximum diameter of about 0.5 micron.
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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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |