Patent US4148960A successfully refreshed from Google Patents.
US4148960A
Expired / Lapsed
US
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Polyester having improved antistatic properties
Assignee: Monsanto Co
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Filing: 1977-12-27
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Granted: 1979-04-10
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Expires: 1997-12-27
Abstract
Abstract Melt blended shaped objects, fibers and fabrics of polyesters with lactam-polyol-polyacyl lactam or -acyl polylactam terpolymers have desirable anti-static properties with the improvement resulting from the presence of the polyol content of the said terpolymer. Such fibers are useful for carpeting, draperies, apparel and nonwoven fabrics.
Inventors
- 👤 Kai-Lim W. Yung
- 👤 Bernard Silverman
- 👤 Virginia C. Menikheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:35
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T442/00; Y10T442/60; Y10T442/637; Y10T442/696
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
A polymeric composition having improved antistatic properties, said composition comprising a melt blend of a polyester and a block terpolymer selected from the group consisting of lactam-polyolpolyacyl lactam and lactam-polyol-acylpolylactam, said composition having at least 5.1 wt. % polyol.
Claim 2
Dependent Claim
39 words
A polymeric composition having improved antistatic properties, said composition comprising a melt blend of a polyester and a block terpolymer selected from the group consisting of lactam-polyolpolyacyl lactam and lactam-polyol-acylpolylactam, said composition having at least 5.1 wt. % polyol.
Claim 3
Dependent Claim
8 words
Fibers comprising the polymeric composition of claim 1.
Claim 4
Dependent Claim
10 words
A shaped article comprising the polymeric composition of claim 1.
Claim 5
Dependent Claim
9 words
Nonwoven fabrics comprising the polymeric composition of claim 1.
Claim 6
Dependent Claim
13 words
A composition as in claim 1 in which the polyester is polyethylene terephathalate.
Claim 7
Dependent Claim
13 words
A composition as in claim 1 in which the polyester is polybutylene terephthalate.
Claim 8
Dependent Claim
39 words
A polymeric composition having improved antistatic properties and comprising a melt blend of a polyester and a block terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, said composition having from 5.1 to 25 wt. % polyol.
Claim 9
Dependent Claim
39 words
A polymeric composition having improved antistatic properties and comprising a melt blend of a polyester and a block terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, said composition having from 5.1 to 25 wt. % polyol.
Claim 10
Dependent Claim
53 words
Process for improving the antistatic properties of a polyester which comprises forming a melt blend composition with a block terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, with the said terpolymer being present at a concentration which provides from 5.1 to 25 wt. % polyol relative to the total composition.
Claim 11
Dependent Claim
53 words
Process for improving the antistatic properties of a polyester which comprises forming a melt blend composition with a block terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, with the said terpolymer being present at a concentration which provides from 5.1 to 25 wt. % polyol relative to the total composition.
Claim 12
Dependent Claim
62 words
A process for improving the antistatic properties of shaped objects, fibers or fabrics which comprises providing a two component system by melting with a polyester a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, in sufficient quantity to provide at least 5.1% by wt. polyol in the product, and forming the melt blend into shaped objects, fibers or fabrics.
Claim 13
Dependent Claim
62 words
A process for improving the antistatic properties of shaped objects, fibers or fabrics which comprises providing a two component system by melting with a polyester a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, in sufficient quantity to provide at least 5.1% by wt. polyol in the product, and forming the melt blend into shaped objects, fibers or fabrics.
Claim 14
Dependent Claim
13 words
A process according to claim 1 wherein the said polyester is polyethylene terephthalate.
Claim 15
Dependent Claim
12 words
A process according to claim 1 wherein the polyester is polybutylene terephthalate.
Claim 16
Dependent Claim
40 words
A nonwoven fabric comprised of melt blended fibers of a polyester in combination with a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam in sufficient quantity to provide at least 5.1% by wt. polyol in the product.
Claim 17
Dependent Claim
40 words
A nonwoven fabric comprised of melt blended fibers of a polyester in combination with a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam in sufficient quantity to provide at least 5.1% by wt. polyol in the product.
Claim 18
Independent Claim
85 words
A method of producing a composite article having improved antistatic properties which comprises forming a melt stream of a blend of a polyester and a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, which blend has at least 5.1 wt. % polyol content, forming a melt stream of another polymeric substance, and extruding the said two melt streams together in a composite configuration, the said composite configuration having at least 5% by wt. of the said blend in the total composite article.
Claim 19
Independent Claim
85 words
A method of producing a composite article having improved antistatic properties which comprises forming a melt stream of a blend of a polyester and a terpolymer selected from the group consisting of lactam-polyol-polyacyl lactam and lactam-polyol-acylpolylactam, which blend has at least 5.1 wt. % polyol content, forming a melt stream of another polymeric substance, and extruding the said two melt streams together in a composite configuration, the said composite configuration having at least 5% by wt. of the said blend in the total composite article.
Claim 20
Dependent Claim
5 words
The product of claim 13.
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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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |