Patent US4309333A successfully refreshed from Google Patents.
US4309333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filled polyolefin compositions and filler material
Assignee: Akzo America Inc
•
Filing: 1979-12-31
•
Granted: 1982-01-05
•
Expires: 1999-12-31
Abstract
Abstract Filled polyolefin compositions having improved thermal stability characteristics are formed by incorporation therein of an effective amount for improvement of such a characteristics of a di(polyoxyalkylene)hydroxyalkyl phosphonate. In most filled polyolefin compositions, the phosphonate also results in color improvement.
Inventors
- 👤 Joseph Silberberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A filled polyolefin composition having improved thermal stability comprising a polyolefin resin, a filler, and an effective amount for said improved stability of a neutral dipolyoxyalkylene hydroxyalkyl phosphonate having the formula: ##STR2## where R,R' and R" are independently C 1 -C 3 alkyl and the sum of m and n is an interger from 2 to 10.
Claim 2
Dependent Claim
57 words
A filled polyolefin composition having improved thermal stability comprising a polyolefin resin, a filler, and an effective amount for said improved stability of a neutral dipolyoxyalkylene hydroxyalkyl phosphonate having the formula: ##STR2## where R,R' and R" are independently C 1 -C 3 alkyl and the sum of m and n is an interger from 2 to 10.
Claim 3
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the polyolefin is present at from about 30% to about 95%, by weight of the composition.
Claim 4
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the filler is present at from about 5% to about 70%, by weight of the composition.
Claim 5
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the phosphonate is present at from about 0.1% to about 3%, by weight of the filler.
Claim 6
Dependent Claim
20 words
A composition as claimed in claim 1 wherein the polyolefin is selected from the group consisting of polyethylene and polypropylene.
Claim 7
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the filler is selected from the group consisting of the metal silicates and the metal carbonates.
Claim 8
Dependent Claim
28 words
A composition as claimed in either claim 1, 2, 3, 4, 5 or 6 wherein the filler is selected from the group consisting of talc and calcium carbonate.
Claim 9
Dependent Claim
20 words
A composition as claimed in either claim 1, 2, 3, 4, 5 or 6 wherein the phosphonate is di(polyoxyethylene)hydroxymethyl phosphonate.
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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |