US4351916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxymethylene molding blends
Assignee: EIDP Inc
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Filing: 1981-05-07
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Granted: 1982-09-28
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Expires: 2001-05-07
Abstract
Abstract A polyoxymethylene molding composition comprising an admixture which contains a small amount of poly(ethylene glycol) and a small amount of a dispersion of polyamide in a carrier resin.
Inventors
- 👤 Melvin I. Kohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:47
CPC Classifications
C; C08; C08L; C08L59/00; C08L59/02; C08L71/00; C08L71/02; C08L77/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A polyoxymethylene blend consisting essentially of (a) polyoxymethylene, (b) 0.1-10 percent, preferably 0.5-5 percent, by weight of blend, poly(ethylene glycol), and (c) 0.15-3 percent, preferably 0.4-2.0 percent, by weight of blend, of a dispersion of polyamide in a carrier resin, the polyamide comprising about from 10 to 50 wt % of the dispersion and being present in the carrier resin as particles no greater than about 5 microns; the carrier resin being inert to the oxymethylene polymer and having a melting point at or below the processing temperature of the oxymethylene polymer.
Claim 2
Dependent Claim
92 words
A polyoxymethylene blend consisting essentially of (a) polyoxymethylene, (b) 0.1-10 percent, preferably 0.5-5 percent, by weight of blend, poly(ethylene glycol), and (c) 0.15-3 percent, preferably 0.4-2.0 percent, by weight of blend, of a dispersion of polyamide in a carrier resin, the polyamide comprising about from 10 to 50 wt % of the dispersion and being present in the carrier resin as particles no greater than about 5 microns; the carrier resin being inert to the oxymethylene polymer and having a melting point at or below the processing temperature of the oxymethylene polymer.
Claim 3
Dependent Claim
11 words
The blend of claim 1 wherein the polyoxymethylene is a homopolymer.
Claim 4
Dependent Claim
23 words
The blend of claim 1 or 2 wherein the poly(ethylene glycol) is present in an amount of 0.5-5 percent by weight of blend.
Claim 5
Dependent Claim
28 words
The blend of claim 1 or 2 wherein the dispersions of polyamide in a carrier resin is present in an amount of 0.4-2.0 percent by weight of blend.
Claim 6
Dependent Claim
26 words
The blend of claim 3 wherein the diepersion of polyamide in a carrier resin is present in an amount of 0.4-2.0 percent by weight of blend.
Claim 7
Dependent Claim
21 words
The blend of claim 4 wherein the poly(ethylene glycol) is present in an amount of 0.5-5 percent by weight of blend.
Claim 8
Dependent Claim
13 words
The blend of claim 5 wherein the carrier resin is an ethylene copolymer.
Claim 9
Dependent Claim
25 words
The blend of claim 1 wherein in component (c), the polyamide is polyamide-66 and the carrier resin is a copolymer of ethylene and methyl acrylate.
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |