Patent US3932333A successfully refreshed from Google Patents.
US3932333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsified phenolic resin system containing an anti-migratory additive
Assignee: Monsanto Co
•
Filing: 1973-01-15
•
Granted: 1976-01-13
•
Expires: 1993-01-15
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 |