US4874817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of imidized acrylic polymers and polyamides
Assignee: EIDP Inc
•
Filing: 1983-03-23
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Granted: 1989-10-17
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Expires: 2003-03-23
Abstract
Abstract Mixtures of imidized acrylic polymers and polyamides are described which have good flexural modulus properties.
Inventors
- 👤 Harold K. Inskip
- 👤 Marion G. Waggoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:44
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/24; C08L77/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
65 words
A molding blend comprising about 40-95 volume percent of a polyamide resin of molecular weight of at least 15000 and complementally, about, 60-5 volume percent of an imidized acrylic resin, said imidized acrylic resin containing at least 10% by weight recurring imide units of the formula ##STR3## wherein R is hydrogen or hydrocarbyl of 1-20 carbon atoms; and R 1 is --CH 3 or H.
Claim 2
Dependent Claim
65 words
A molding blend comprising about 40-95 volume percent of a polyamide resin of molecular weight of at least 15000 and complementally, about, 60-5 volume percent of an imidized acrylic resin, said imidized acrylic resin containing at least 10% by weight recurring imide units of the formula ##STR3## wherein R is hydrogen or hydrocarbyl of 1-20 carbon atoms; and R 1 is --CH 3 or H.
Claim 3
Dependent Claim
39 words
The molding blend of claim 1 wherein the imidized acrylic resin is composed of recurring units of imidized methyl acrylate or imidized methyl methacrylate in which at least 40% of the recurring units of the resin are imide units.
Claim 4
Dependent Claim
38 words
The molding blend of claim 1 wherein the volume percent of polyamide present is between about 40-80 volume percent, and the volume percent of the complemental amount of imidized acrylic resin present is between about 20-60 volume percent.
Claim 5
Dependent Claim
12 words
The molding blend of claim 1 wherein the polyamide is polyhexamethylene adipamide.
Claim 6
Dependent Claim
20 words
Process for preparing the molded blends of claim 1 which comprises mixing the polyamide resin and the imidized acrylic resin.
Claim 7
Dependent Claim
26 words
Process for forming a shaped article of molding blend of claim 1 which comprises melting said blend, forming said shaped article, and cooling the shaped article.
Claim 8
Dependent Claim
39 words
A polymer blend comprising from about 5 to 60 percent by weight of an imidized acrylic polymer, containing at least 10 percent by weight glutarimide units, and from about 95 to about 40 percent by weight of a polyamide.
Claim 9
Dependent Claim
39 words
A polymer blend comprising from about 5 to 60 percent by weight of an imidized acrylic polymer, containing at least 10 percent by weight glutarimide units, and from about 95 to about 40 percent by weight of a polyamide.
References Cited (Backward Citations)
EP0049103A2
Cited
US4415706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |