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Patent US4443573A successfully refreshed from Google Patents.
US4443573A
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US
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Additive dispersions and process for their incorporation with fiber-forming polymers
Assignee: Honeywell International Inc
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Filing: 1982-05-06
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Granted: 1984-04-17
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Expires: 2002-05-06
Abstract
Abstract Dispersions and process for their incorporation with a synthetic fiber-forming polymer are provided. The dispersions comprise a polymer additive, such as titanium dioxide, and a carrier of either a C5-C26 fatty acid ester of pentaerythritol or a C5-C26 fatty acid ester of dipentaerythritol.
Inventors
- 👤 Rodney L. Wells
- 👤 Monty L. Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; B29C48/03; B29C48/05; B29K; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
69 words
In a process for melt-spinning yarn from a synthetic fiber-forming polymer, the improvement comprising: adding to the polymer prior to spinning of filaments of said polymer, a dispersion comprising: 20 to 80 weight percent of at least one polymer additive having an average diameter of up to 0.5 micron at spinning temperature; and 20 to 80 weight percent of a C 5 -C 26 fatty acid ester of pentaerythritol.
Claim 2
Dependent Claim
69 words
In a process for melt-spinning yarn from a synthetic fiber-forming polymer, the improvement comprising: adding to the polymer prior to spinning of filaments of said polymer, a dispersion comprising: 20 to 80 weight percent of at least one polymer additive having an average diameter of up to 0.5 micron at spinning temperature; and 20 to 80 weight percent of a C 5 -C 26 fatty acid ester of pentaerythritol.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the dispersion is added into the polymer at the throat of an extruder.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the dispersion is added to the polymer when the polymer is molten.
Claim 5
Dependent Claim
19 words
The process of claim 3 wherein the dispersion is added to the polymer at the barrel of an extruder.
Claim 6
Dependent Claim
58 words
The process of claim 1 wherein the dispersion further comprises about 0.01 to 5.0 percent, based on the weight of the dispersion, of an organic titanate having the general structure: (RO).sub.m --Ti--(O--X--R.sup.2 --Y).sub.n wherein R is monoalkoxy or chelate; ##STR2## R 2 is dioctyl or isoheptadecyl; Y is H; m is 1; and n is 2 or 3.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein the additive is titanium dioxide at up to 2 percent on the weight of the yarn.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein the ester of pentaerythritol is a C 8 -C 10 fatty acid tetraester of pentaerythritol.
Claim 9
Dependent Claim
69 words
In a process for melt-spinning yarn from a synthetic fiber-forming polymer, the improvement comprising: adding to the polymer prior to spinning of filaments of said polymer, a dispersion comprising: 20 to 80 weight percent of at least one polymer additive having an average diameter of up to 0.5 micron at spinning temperature; and 20 to 80 weight percent of a C 5 -C 26 fatty acid ester of dipentaerythritol.
Claim 10
Dependent Claim
69 words
In a process for melt-spinning yarn from a synthetic fiber-forming polymer, the improvement comprising: adding to the polymer prior to spinning of filaments of said polymer, a dispersion comprising: 20 to 80 weight percent of at least one polymer additive having an average diameter of up to 0.5 micron at spinning temperature; and 20 to 80 weight percent of a C 5 -C 26 fatty acid ester of dipentaerythritol.
Claim 11
Dependent Claim
20 words
The process of claim 8 wherein the dispersion is added into the polymer when the polymer is in chip form.
Claim 12
Dependent Claim
19 words
The process of claim 9 wherein the dispersion is added into the polymer at the throat of an extruder.
Claim 13
Dependent Claim
18 words
The process of claim 8 wherein the dispersion is added to the polymer when the polymer is molten.
Claim 14
Dependent Claim
19 words
The process of claim 11 wherein the dispersion is added to the polymer at the barrel of an extruder.
Claim 15
Dependent Claim
58 words
The process of claim 8 wherein the dispersion further comprises about 0.01 to 5.0 percent, based on the weight of the dispersion, of an organic titanate having the general structure: (RO).sub.m --Ti--(O--X--R.sup.2 --Y).sub.n wherein R is monoalkoxy or chelate; ##STR3## R 2 is dioctyl or isoheptadecyl; Y is H; m is 1; and n is 2 or 3.
Claim 16
Dependent Claim
22 words
The process of claim 8 wherein the additive is titanium dioxide at up to 2 percent on the weight of the yarn.
Claim 17
Dependent Claim
21 words
The process of claim 8 wherein the ester of dipentaerythritol is a C 5 -C 10 fatty acid hexaester of dipentaerythritol.
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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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |