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US3923708A Expired / Lapsed US ⏱️ 0.0 years remaining

Sizing agent for glass fibers

Assignee: Kao Corp
•
Filing: 1974-06-12
•
Granted: 1975-12-02
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Expires: 1994-06-12
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Abstract

Abstract A sizing agent composition comprising a film-forming material, a lubricant for glass fibers, a coupling agent and an antistatic agent, in which the film-forming material is an oil-in-water type emulsion of an unsaturated polyester obtained by reacting under heating (a) 1 mole of a dibasic acid component containing at least 50 mole percent of fumaric acid or maleic anhydride and (b) 1 to 1.5 moles of a diol component containing at least 30 mole percent of an adduct of 2 to 10 mols of an alkylene oxide to bisphenol A, with (c) an emulsifier selected from an adduct of 5 to 200 moles of an alkylene oxide to castor oil, an adduct of 5 to 200 moles of an alkylene oxide to hydrogenated castor oil and a polyethyleneglycol having an average molecular weight of 1000 to 6000, the amount of said emulsifier (c) being 5 to 30 parts by weight per 100 parts by weight of the sum of the polyester starting materials (a) and (b), and incorporating the resulting unsaturated polyester into water, and that the antistatic agent is a compound having the formulae RSO3H.N(CH2CH2OH)3 or ROSO3H.N(CH2CH2OH)3 wherein R stands for alkyl having 8 to 20 carbon atoms or an univalent organic radical obtained from alkylbenzene, alkylnaphthalene, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, naphthalene-formaldehyde condensate, dialkyl succinate or alkyldiphenyl oxide.

Inventors

  • 👤 Jun-Ichi Furukawa
  • 👤 Yoshinao Kono

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 06:24
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/323; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T442/00; Y10T442/20; Y10T442/2402

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 207 words
IN A SIZING AGENT COMPOSITION FOR GLASS FIBERS COMPRISING A FILM-FORMING MATERIAL, A LUBRICANT FOR GLASS FIBERS, A COUPLING AGENT FOR GLASS FIBERS AND AN ANTISTATIC AGENT, THE IMPROVEMENT WHICH COMPRISES EMPOLYING AS THE FILM-FORMING MATERIAL IN OIL-IN-WATER TYPE EMULSION OF AN UNSATURATED POLYESTER OBTAINED BY THE REACTION OF (A) 1 MOLE OF A DIBASIC ACID COMPOSITION CONTAINING AT LEAST 50 MOLE PERCENT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FUMARIC ACID, MALEIC ANHYDRIDE AND MIXTURES THEREOF, (B) 1 TO 1.5 MOLES OF A DIOL COMPONENT CONTANING AT LEAST 30 MOLE PERCENT OF AN ADDUT OF 2 TO 10 MOLES OF AN ALKYLENE OXIDE TO BISPHENOL A WITH (C) AN EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ADDUCT OF 5 TO 200 MOLES OF AN ALKYLENE OXIDE TO CASTOR OIL, AN ADDUCT OF 5 TO 200 MOLES OF AN ALKYLENE OXIDE TO HYDROGENATED CASTOR OIL AND POLYETHYLENEGLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 1000 TO 6000, THE AMOUNT OF SAID EMULSIFIER (C) BEING 5 TO 30 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE SUM OF THE POLYESTER STARTING MATERIALS (A) AND (B), AND INCORPORATING THE RESULTING UNSATURATED POLYESTER INTO WATER, AND EMPLOYING AN ANTISTATIC AGENT OF ONE OF THE FOLLOWING FORMULAE
Claim 2
Dependent Claim 207 words
IN A SIZING AGENT COMPOSITION FOR GLASS FIBERS COMPRISING A FILM-FORMING MATERIAL, A LUBRICANT FOR GLASS FIBERS, A COUPLING AGENT FOR GLASS FIBERS AND AN ANTISTATIC AGENT, THE IMPROVEMENT WHICH COMPRISES EMPOLYING AS THE FILM-FORMING MATERIAL IN OIL-IN-WATER TYPE EMULSION OF AN UNSATURATED POLYESTER OBTAINED BY THE REACTION OF (A) 1 MOLE OF A DIBASIC ACID COMPOSITION CONTAINING AT LEAST 50 MOLE PERCENT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FUMARIC ACID, MALEIC ANHYDRIDE AND MIXTURES THEREOF, (B) 1 TO 1.5 MOLES OF A DIOL COMPONENT CONTANING AT LEAST 30 MOLE PERCENT OF AN ADDUT OF 2 TO 10 MOLES OF AN ALKYLENE OXIDE TO BISPHENOL A WITH (C) AN EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ADDUCT OF 5 TO 200 MOLES OF AN ALKYLENE OXIDE TO CASTOR OIL, AN ADDUCT OF 5 TO 200 MOLES OF AN ALKYLENE OXIDE TO HYDROGENATED CASTOR OIL AND POLYETHYLENEGLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 1000 TO 6000, THE AMOUNT OF SAID EMULSIFIER (C) BEING 5 TO 30 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE SUM OF THE POLYESTER STARTING MATERIALS (A) AND (B), AND INCORPORATING THE RESULTING UNSATURATED POLYESTER INTO WATER, AND EMPLOYING AN ANTISTATIC AGENT OF ONE OF THE FOLLOWING FORMULAE
Claim 3
Dependent Claim 137 words
A composition according to claim 1, in which said emulsion is obtained by reacting at a temperature of 150* to 210*C, a reaction mixure consisting of components (a), (b), (c) and (d) wherein the mole ratio of (b)/(a) is (1.0 to 1.5)/1.0 and the weight ratio of (c)/(a) plus (b) is (5 to 30)/100, wherein component (a) consists of (1) 50 to 100 mole percent of a material selected from the group consising of fumaric acid, maleic anhydride and mixtures thereof, and (2) the balance of (a) is Alpha , Beta -ethylenically unsaturated dibasic acid, component (b) consists of (1) 30 to 100 mole percent of an adduct of 2 to 10 moles of alkylene oxide to bisphenol A, and (2) the balance is selected from the group consisting of hydrogenated bisphenol A, diol of the formula
Claim 4
Dependent Claim 16 words
A method according to claim 2 wherein said alkylene oxide is ethylene oxide or propylene oxide.
Claim 5
Dependent Claim 13 words
A method according to claim 3, wherein component (a) consists of fumaric acid.
Claim 6
Dependent Claim 13 words
A method according to claim 3, wherein component (a) consists of maleic anhydride.
Claim 7
Dependent Claim 34 words
A coated product comprising glass fibers or mats of glass fibers coated with from 0.5 to 5 weight percent of a composition according to claim 1, based on the weight of the glass fibers.
Claim 8
Dependent Claim 45 words
A method of sizing glass fibers or mats of glass fibers which comprises applying an aqueous solution or emulsion of the composition defined in claim 1 to the glass fibers and then evaporating water from the composition to deposit a coating on said glass fibers.

References Cited (Backward Citations)

US2801189A Cited
US2855373A Cited
US3097963A Cited
US3063870A Cited
US3214491A Cited
US3345339A Cited
US3442842A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-01 1979-06-02 1979-12-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-01 1983-06-02 1983-12-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-01 1987-06-02 1987-12-02 $7700.00 Window Closed / Lapsed

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