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US4054634A Expired / Lapsed US ⏱️ 0.0 years remaining

Production of polyester tire yarn

Assignee: Honeywell International Inc
•
Filing: 1975-09-29
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Granted: 1977-10-18
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Expires: 1995-09-29
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Abstract

Abstract In a process for producing polyethylene terephthalate yarn, particularly for tire cords, wherein a liquid finish is applied to the yarn, said process involving spinning and drawing steps, the improvement comprising: (a) first applying to the yarn prior to said drawing step a liquid finish composition consisting essentially of a polyalkylene glycol compound which is a mixed polyoxyethylated-polyoxypropylated monoether prepared in accordance with the equation: <IMAGE> RO(C2H4O, C3H6O)x+yH where R is an alkyl group having 1 to 8 carbon atoms, x and y are the number of moles of propylene oxide and ethylene oxide respectively and wherein ethylene oxide comprises 40 to 60 percent by weight of the combined total of ethylene oxide and propylene oxide and x+y has a value to produce a molecular weight of from 300 to 1,000; and then (b) applying to said yarn after said drawing step a liquid finish composition consisting essentially of about 70 to 95 parts by weight of said mixed polyoxyethylated-polyoxypropylated monoether, about 5 to 30 parts by weight of a silane having the structural formula: <IMAGE> wherein n = 2 to 5, and a sufficient amount of a water-soluble alkaline catalyst to adjust the pH of the finish composition to 8-10.

Inventors

  • 👤 Robert Moore Marshall
  • 👤 Kimon Constantine Dardoufas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 09:23
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/165; D06M13/50; D06M13/51; D06M13/513; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/2967; Y10T428/2969

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 235 words
In a process for producing polyethylene terephthalate yarn, particularly for tire cords, wherein a liquid finish is applied to the yarn, said process involving spinning and drawing steps, the improvement comprising: a. first applying to the yarn prior to said drawing step from about 0.2 to about 0.6 weight percent, based on the weight of the yarn, of a liquid finish composition consisting essentially of a polyalkylene glycol compound which is a mixed polyoxyethylated-polyoxypropylated monoether prepared in accordance with the equation: ##STR9## where R is an alkyl group having 1 to 8 carbon atoms, x and y are the number of moles of propylene oxide and ethylene oxide respectively and wherein ethylene oxide comprises 40 to 60 percent by weight of the combined total of ethylene oxide and propylene oxide and x+y has a value to produce a molecular weight of from 500 to 850; and then b. applying to said yarn after said drawing step from about 0.3 to about 1.3 weight percent, based on the weight of the yarn, of a liquid finish composition consisting essentially of an aqueous solution of about 70 to 95 parts by weight of said mixed polyoxyethylated-polyoxypropylated monoether, about 5 to 30 parts by weight of a silane having the structural formula: ##STR10## wherein n = 2 to 5, and a sufficient amount of a water-soluble alkaline catalyst to adjust the pH of the finish composition to 8-10.
Claim 2
Dependent Claim 235 words
In a process for producing polyethylene terephthalate yarn, particularly for tire cords, wherein a liquid finish is applied to the yarn, said process involving spinning and drawing steps, the improvement comprising: a. first applying to the yarn prior to said drawing step from about 0.2 to about 0.6 weight percent, based on the weight of the yarn, of a liquid finish composition consisting essentially of a polyalkylene glycol compound which is a mixed polyoxyethylated-polyoxypropylated monoether prepared in accordance with the equation: ##STR9## where R is an alkyl group having 1 to 8 carbon atoms, x and y are the number of moles of propylene oxide and ethylene oxide respectively and wherein ethylene oxide comprises 40 to 60 percent by weight of the combined total of ethylene oxide and propylene oxide and x+y has a value to produce a molecular weight of from 500 to 850; and then b. applying to said yarn after said drawing step from about 0.3 to about 1.3 weight percent, based on the weight of the yarn, of a liquid finish composition consisting essentially of an aqueous solution of about 70 to 95 parts by weight of said mixed polyoxyethylated-polyoxypropylated monoether, about 5 to 30 parts by weight of a silane having the structural formula: ##STR10## wherein n = 2 to 5, and a sufficient amount of a water-soluble alkaline catalyst to adjust the pH of the finish composition to 8-10.
Claim 3
Dependent Claim 10 words
The process of claim 1 wherein the silane is gamma-glycidoxypropyltrimethoxysilane.
Claim 4
Dependent Claim 42 words
The process of claim 1 wherein the alkaline catalyst is selected from the group consisting of sodium hydroxide, potassium hydroxide and triethanolamine, and a sufficient amount of said alkaline catalyst is present to adjust the pH of the finish composition to 8.0-8.5
Claim 5
Dependent Claim 12 words
The process of claim 3 wherein the alkaline catalyst is sodium hydroxide.
Claim 6
Dependent Claim 12 words
The process of claim 3 wherein the alkaline catalyst is potassium hydroxide.
Claim 7
Dependent Claim 11 words
The process of claim 3 wherein the alkaline catalyst is triethanolamine.

References Cited (Backward Citations)

US2425755A Cited
US2964470A Cited
US3583878A Cited
US3730892A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-10-17 1981-04-18 1981-10-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-10-17 1985-04-18 1985-10-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-10-17 1989-04-18 1989-10-18 $7700.00 Window Closed / Lapsed

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