US5137973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefins containing polyester nucleating agent and articles formed therefrom
Assignee: Honeywell International Inc
•
Filing: 1990-09-10
•
Granted: 1992-08-11
•
Expires: 2010-09-10
Abstract
Abstract The invention relates to a crystalline polyolefin composition having dispersed therein a nucleating agent composed of one or more polyesters.
Inventors
- 👤 Yash P. Khanna
- 👤 Kevin R. Slusarz
- 👤 Georgette Chomyn
- 👤 Tammy L. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:36
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L67/00; C08L2207/00; C08L2207/10; C08L2207/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
23 words
A composition comprising: (a) polypropylene; and (b) a nucleating effective amount of poly(butylene terephthalate) having an intrinsic viscosity of less than about 0.20.
Claim 2
Dependent Claim
23 words
A composition comprising: (a) polypropylene; and (b) a nucleating effective amount of poly(butylene terephthalate) having an intrinsic viscosity of less than about 0.20.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein said poly(butylene terephthalate) has a intrinsic viscosity of about 0.05 to about 0.20.
Claim 4
Dependent Claim
29 words
A composition according to claim 2 wherein the amount of said poly(butylene terephthalate) is from about 0.2 to about 1.0% by wgt. of the total weight of the composition.
Claim 5
Dependent Claim
14 words
A composition according to claim 3 wherein said amount is about 0.5% by wgt.
Claim 6
Dependent Claim
28 words
A composition according to claim 1 wherein the amount of said poly(butylene terephthalate) is at least about 0.01 weight percent based on the total weight of the composition.
Claim 7
Dependent Claim
22 words
A composition according to claim 5 wherein the amount of said poly(butylene terephthalate) is from about 0.1 to about 25 weight percent.
Claim 8
Dependent Claim
22 words
A composition according to claim 6 wherein the amount of said poly(butylene terephthalate) is from about 1 to about 15 weight percent.
Claim 9
Dependent Claim
21 words
A composition according to claim 7 wherein the amount of poly(butylene terephthalate) is from about 2.5 to about 10 weight percent.
Claim 10
Dependent Claim
21 words
A composition according to claim 8 wherein the amount of poly(butyelene terephthalate) is from about 3 to about 8.5 weight percent.
Claim 11
Dependent Claim
17 words
A composition according to claim 6 wherein said intrinsic viscosity is from about 0.01 to about 0.20.
Claim 12
Dependent Claim
17 words
A composition according to claim 7 wherein said intrinsic viscosity is from about 0.03 to about 0.20.
Claim 13
Dependent Claim
19 words
An article of manufacturing fabricated totally or in part from the composition of claim 1, 2, 3 or 4.
References Cited (Backward Citations)
US3937757A
Cited
US3419638A
Cited
US3431322A
Cited
US3928263A
Cited
US4081424A
Cited
US4368295A
Cited
US4288573A
Cited
US4340528A
Cited
US4341690A
Cited
US4463121A
Cited
US4564658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |