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US 5,696,174 AGranted
Stable and water-resistant aqueous foam composition
AssigneeAllied Foam Tech Corp.
InventorsYen-Yau H. Chao, Kuei-Jung Chao
Life of this patent
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Abstract
Stable and water-resistant aqueous foam composition containing (1) a long chain cationic organic compound and (2) a long-chain anionic organic compound in a weight ratio of from 0.05:1 to 15:1. The stable foam composition of the invention may be mixed with various water-soluble or water-dispersible organic, polymeric, or inorganic substances and used in applications where lightweight, heat, sound or other insulative, barrier properties or homogeneous material distribution are needed. Such applications include cementitious or gypsum containing substances, adhesives, binders, paper treating materials, coatings, ceramics, landfills, geofills, and firefighting and fireproofing materials.
Claims33
A composition for use in making a foamed composition comprising:
- a long-chain organic cation-forming compound having the formula (I):
- ##STR3## where R is an aliphatic hydrocarbon radical having from 8 to 24 carbon atoms;
- R.sub.1 is selected from the group consisting of an alkyl group having from 1-16 carbon atoms, a benzyl group, and a group which, when taken together with the nitrogen, represents a heterocyclic radical;
- R.sub.2 and R.sub.3 are each an alkyl group having from 1-6 carbon atoms;
- and X.sup.- is selected from the group consisting of a halide, a sulfonate, and a sulfate;
- and
- a long-chain organic anion-forming compound having the formula (II):
- R'--X.sub.2.sup.- Y.sup.+ (II)
- where R' is an aliphatic hydrocarbon radical with 10 to 24 carbon atoms;
- X.sub.2.sup.- is an anionic group selected from the group consisting of carboxylate, sulfate, sulfonate, and phosphate;
- and Y.sup.+ is a cationic counter ion selected from the group consisting of ammonium, sodium, and potassium salt;
- wherein the cation formed from said long-chain organic cation-forming compound and the anion formed from said long-chain organic anion-forming compound are present in a weight ratio of from 0.05:1 to 15:1.
9 more elements
A process of preparing a foam comprising the steps of:
- (a) generating a preformed foam by agitating a first liquid comprising water and one of
- (i) a long-chain organic cation-forming compound having the formula I:
- ##STR4## where R is an aliphatic hydrocarbon radical having from 8 to 24 carbon atoms;
- R.sub.1 is selected from the group consisting of an alkyl group having from 1-16 carbon atoms, a hydroxyalkyl group having from 1-16 carbon atoms, a benzyl group, and a group which, when taken together with the nitrogen, represents a heterocyclic radical, and any of said groups having a hydrogen atom replaced by a fluorine atom;
- R.sub.2 and R.sub.3 are each selected from the group consisting of an alkyl group having from 1-6 carbon atoms, a hydroxyalkyl group having from 1-6 carbon atoms, a benzyl group, a hydrogen atom, a group which, when taken together with the nitrogen, represents a heterocyclic radical, and any of said groups having a hydrogen atom replaced by a fluorine atom;
- and X.sup.- is selected from the group consisting of a halide, a sulfonate, and a sulfate;
- and
- (ii) a long-chain organic anion-forming compound having the formula (II):
- R'--X.sub.2.sup.- Y.sup.+ (II)
- where R' is an aliphatic hydrocarbon radical with 10 to 24 carbon atoms;
- X.sub.2.sup.31 is an anionic group selected from the group consisting of carboxylate, sulfate, sulfonate, and phosphate;
- and Y.sup.+ is a cationic counter ion selected from the group consisting of ammonium, sodium, and potassium salt;
- (b) adding to said preformed foam a second liquid comprising the other of said long-chain organic cation-forming compound and said long-chain organic anion-forming compound, such that the cation formed from said long-chain organic cation-forming compound and the anion formed from said long-chain organic anion-forming compound are present in a weight ratio of from 0.05:1 to 15:1;
- and
- (c) agitating said preformed foam and said second liquid to generate a single foam from said preformed foam and said second liquid.
12 more elements
A process of preparing a foam comprising the steps of:
- (a) forming a liquid mixture in water of a long-chain organic cation-forming compound having the formula (I):
- ##STR5## where R is an aliphatic hydrocarbon radical having from 8 to 24 carbon atoms;
- R.sub.1 is selected from the group consisting of an alkyl group having from 1-16 carbon atoms, a benzyl group, and a group which, when taken together with the nitrogen, represents a heterocyclic radical;
- R.sub.2 and R.sub.3 are each an alkyl group having from 1-6 carbon atoms;
- and X.sup.- is selected from the group consisting of a halide, a sulfonate, and a sulfate;
- and
- a long-chain organic anion-forming compound having the formula (II):
- R'--X.sub.2.sup.- Y.sup.+ (II)
- where R' is an aliphatic hydrocarbon radical with 10 to 24 carbon atoms;
- X.sub.2.sup.- is an anionic group selected from the group consisting of carboxylate, sulfate, sulfonate, and phosphate;
- and Y.sup.+ is a cationic counter ion selected from the group consisting of ammonium, sodium, and potassium salt;
- such that the cation formed from said long-chain organic cation-forming compound and the anion formed from said long-chain organic anion-forming compound are present in said liquid mixture in a weight ratio of from 0.05:1 to 15:1;
- (b) adding to said liquid mixture a foam generator;
- and
- (c) agitating said mixture.
12 more elements
A foam composition comprising:
- (a) water;
- (b) a long-chain organic cation formed from a cation-forming compound having the formula (I):
- ##STR6## where R is an aliphatic hydrocarbon radical having from 8 to 24 carbon atoms;
- R.sub.1 is selected from the group consisting of an alkyl group having from 1-16 carbon atoms, a benzyl group, and a group which, when taken together with the nitrogen, represents a heterocyclic radical;
- R.sub.2 and R.sub.3 are each an alkyl group having from 1-6 carbon atoms;
- and X.sup.- is selected from the group consisting of a halide, a sulfonate, and a sulfate;
- and
- (c) a long-chain organic anion formed from an anion-forming compound having the formula (H):
- R'--X.sub.2.sup.- Y.sup.+ (II)
- where R' is an aliphatic hydrocarbon radical with 10 to 24 carbon atoms;
- X.sub.2.sup.- is an anionic group selected from the group consisting of carboxylate, sulfate, sulfonate, and phosphate;
- and Y.sup.+ is a cationic counter ion selected from the group consisting of ammonium, sodium, and potassium salt;
- wherein said long-chain organic cation and said long-chain organic anion are present in a weight ratio of from 0.05:1 to 15:1.
10 more elements
Dependencies are inferred from the claim text.