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Emulsified phenolic resin system containing an anti-migratory additive

Assignee: Monsanto Co
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Filing: 1973-01-15
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Granted: 1976-01-13
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Expires: 1993-01-15
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Abstract

Abstract The present invention relates to an anti-migratory (as respects impregnated porous sheet members) phenol-formaldehyde resole resin in water emulsions. The emulsion is rendered anti-migratory (when impregnated into paper) through the addition thereto of an anti-migratory agent selected from the group consisting of polyelectrolytes, certain salts of inorganic acids, and combinations thereof. The composition is especially useful in the impregnation of filter paper.

Inventors

  • 👤 II Woodrow Hayes Ingram

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 06:03
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C09; C09J; C09J161/00; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; C08J2361/00; C08J2361/34

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 149 words
A composition of matter comprising in combination: A. a stable emulsified phenol-formaldehyde resole resin having a water dilutability of from 15 percent to 2000 percent based on the resin solids, a formaldehyde to phenol combined mole ratio of from about 0.85 to 3.0 and a viscosity in methanol solution at 60 weight percent solids of not greater than about 10,000 centipoises and in the form of spherules dispersed in aqueous medium of which at least about 80 weight percent of the spherules have a maximum dimension from about 0.01 to 0.8 microns and containing: 1. a quantity of solids ranging from about 5 to 45 parts by weight; 2. a quantity of organic liquid ranging from about 0 to 20 parts by weight, and 3. a quantity of water ranging from 35 to 95 parts by weight; and B. a water soluble polyelectrolyte selected from the group consisting of:
Claim 2
Dependent Claim 149 words
A composition of matter comprising in combination: A. a stable emulsified phenol-formaldehyde resole resin having a water dilutability of from 15 percent to 2000 percent based on the resin solids, a formaldehyde to phenol combined mole ratio of from about 0.85 to 3.0 and a viscosity in methanol solution at 60 weight percent solids of not greater than about 10,000 centipoises and in the form of spherules dispersed in aqueous medium of which at least about 80 weight percent of the spherules have a maximum dimension from about 0.01 to 0.8 microns and containing: 1. a quantity of solids ranging from about 5 to 45 parts by weight; 2. a quantity of organic liquid ranging from about 0 to 20 parts by weight, and 3. a quantity of water ranging from 35 to 95 parts by weight; and B. a water soluble polyelectrolyte selected from the group consisting of:
Claim 3
Dependent Claim 93 words
polyacrylic acid and copolymers of acrylic acid and vinyl acetate containing up to 50 mole percent of vinyl acetate and the ammonium and alkali metal salts thereof, 2. polymethacrylic acid and copolymers of methacrylic acid and vinyl acetate containing up to 50 mole percent of vinyl acetate and the ammonium and alkali metal salts thereof, 3. copolymers of maleic anhydride and a comonomer selected from the group consisting of ethylene, propylene, butylene, styrene, chlorostyrene, vinyl toluene, vinyl formate, vinyl acetate, vinyl propionate, and vinyl benzoate and the ammonium and alkali metal salts thereof,
Claim 4
Dependent Claim 93 words
polyacrylic acid and copolymers of acrylic acid and vinyl acetate containing up to 50 mole percent of vinyl acetate and the ammonium and alkali metal salts thereof, 2. polymethacrylic acid and copolymers of methacrylic acid and vinyl acetate containing up to 50 mole percent of vinyl acetate and the ammonium and alkali metal salts thereof, 3. copolymers of maleic anhydride and a comonomer selected from the group consisting of ethylene, propylene, butylene, styrene, chlorostyrene, vinyl toluene, vinyl formate, vinyl acetate, vinyl propionate, and vinyl benzoate and the ammonium and alkali metal salts thereof,
Claim 5
Dependent Claim 99 words
copolymers of a monoalkyl maleate wherein the alkyl group is methyl, ethyl, propyl, or butyl and a comonomer selected from the group consisting of ethylene, propylene, butylene, styrene, chlorostyrene, vinyltoluene, vinyl formate, vinyl acetate, vinyl propionate, and vinyl benzoate and the ammonium and alkali metal salts thereof, and 5. copolymers of acrylic acid and 2-ethylhexyl acrylate containing 93.5 to 98.5 mole percent of acrylic and 6.5 -1.5 mole percent of 2-ethylhexyl acrylate; wherein the amount of water soluble polyelectrolyte is in the range from 0.04 to 20 percent by weight based on the total solids weight of phenol-formaldehyde resin.
Claim 6
Dependent Claim 99 words
copolymers of a monoalkyl maleate wherein the alkyl group is methyl, ethyl, propyl, or butyl and a comonomer selected from the group consisting of ethylene, propylene, butylene, styrene, chlorostyrene, vinyltoluene, vinyl formate, vinyl acetate, vinyl propionate, and vinyl benzoate and the ammonium and alkali metal salts thereof, and 5. copolymers of acrylic acid and 2-ethylhexyl acrylate containing 93.5 to 98.5 mole percent of acrylic and 6.5 -1.5 mole percent of 2-ethylhexyl acrylate; wherein the amount of water soluble polyelectrolyte is in the range from 0.04 to 20 percent by weight based on the total solids weight of phenol-formaldehyde resin.
Claim 7
Dependent Claim 13 words
The composition of claim 1 wherein the polyelectrolyte is ethylene maleic anhydride copolymer.
Claim 8
Dependent Claim 41 words
The composition of claim 1 containing in addition from 0 to 30 parts by weight of an inorganic salt selected from the group consisting of the ammonium and alkali metal salts of hydrochloric and sulfuric acid per 100 parts of solids.
Claim 9
Dependent Claim 20 words
The composition of claim 3 wherein the water soluble polyelectrolyte is sodium polyacrylate and the inorganic salt is ammonium chloride.
Claim 10
Dependent Claim 18 words
The composition of claim 1 wherein the emulsion solids comprise 5 to 30 weight percent of the composition.
Claim 11
Dependent Claim 26 words
The composition of claim 3 wherein there are between 5 and 20 parts by weight of the inorganic salt per 100 parts by weight of solids.

References Cited (Backward Citations)

US2883356A Cited
US2984588A Cited
US3014886A Cited
US3161547A Cited
US3380877A Cited
US3428607A Cited
US3594343A Cited
US3658622A Cited
US3719616A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-01-12 1979-07-14 1980-01-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-01-12 1983-07-14 1984-01-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-01-12 1987-07-14 1988-01-13 $7700.00 Window Closed / Lapsed

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