Latex/sol or gel systems
AssigneeUnion Oil Company of California
InventorCharles L. Kissel
Life of this patent
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Abstract
An electrically conductive polymer composition containing a nonconjugated polymer and a salt is prepared by admixing a sol or gel composition containing the salt with a polymer. A novel sol or gel composition containing a nonionic surfactant stabilizer is useful for preparing the electrically conductive composition. An intermediate mixture of salt, stabilizer and solvent are heated to prepare a sol or gel which is typically admixed with a latex to produce a product admixture containing the salt and a latex polymer. The product admixture is dried to produce a resultant latex polymer/salt composition having electrically conductive properties useful, as for example, as an antistatic carpet coating.
Claims199
A process for preparing a sol or gel composition containing at least 0.001 weight percent of at least one salt in the form of anions, cations, and colloidal salt particulates and prepared by heating an admixture comprising at least one nonaqueous solvent, at least one stabilizer and said salt, is subsequently admixed with a latex of a polymer.
A process for admixing a latex of a polymer with a salt, said process comprising:
- (A) preparing a substantially nonaqueous sol or gel composition by
- (1) admixing (a) at least one nonaqueous solvent, (b) at least one stabilizer, and (c) at least one salt, and
- (2) heating the admixture to produce a substantially nonaqueous sol or gel composition having a pH less than about 4.0 and containing said salt in the form of anions, cations, and colloidal salt particulates and at least 0.001 weight percent of said salt;
- and
- (B) admixing said sol or gel with said latex of a polymer to produce a stable, noncoagulated product admixture composition containing said latex of a polymer and said salt.
A process for admixing a composition containing a latex of a polymer with a salt containing metallic or nonmetallic cations or metallic or nonmetallic anions, said process comprising the following steps:
- (1) admixing (a) at least one nonaqueous solvent comprising a polyol, (b) at least one stabilizer comprising a chelator or a nonionic surfactant, and (c) at least one salt containing a metallic or nonmetallic cation or a metallic or nonmetallic anion,
- (2) heating the admixture to a temperature less than about 100.degree. C. to produce a sol or gel composition containing at least 0.001 weight percent of said salt, including said metallic cation or metallic anion, and colloidal salt particulates, said sol or gel having a pH less than about 4.0, and
- (3) admixing said sol or gel containing said metallic cation or metallic anion and colloidal salt particulates with said latex of a polymer to produce a stable, noncoagulated product admixture composition containing said latex polymer and said salt, including said metallic cation, metallic anion and colloidal salt particulates.
A stable, noncoagulated composition containing a latex of a polymer and a salt, said composition prepared by admixing (A) a sol or gel composition comprising (1) at least one nonaqueous solvent, (2) at least one salt in the form of anions, cations, and colloidal salt particulates, (3) a pH less than about 4.0, and (4) a stabilizer comprising a nonionic surfactant, with (B) said latex of a polymer.
A stable, noncoagulated product admixture composition containing a latex of a polymer and a metallic cation or metallic anion and colloidal salt particulates, said product admixture composition prepared from a sol or gel having a pH less than about 4.0 which is admixed with a latex of a polymer, said sol or gel composition prepared by the following steps:
- (1) admixing
- (a) at least one solvent containing ethylene glycol,
- (b) at least one salt comprising a metallic cation or metallic anion, and
- (c) at least one stabilizer comprising citric acid or a nonionic surfactant, and
- (2) heating the admixture obtained in step (1) to an elevated temperature in the range from greater than room temperature to about 95.degree. C. and wherein a transparent sol or gel containing at least 0.001 weight percent of said salt, including said metallic cation or said metallic anion and colloidal salt particulates, is produced.
A resultant latex polymer/salt composition capable of conducting alternating electrical current and prepared from a stable, noncoagulated product admixture composition containing a latex of a polymer and a dispersed salt, said resultant latex polymer/salt composition prepared by the following steps:
- (1) preparing a sol or gel composition having a pH of less than about 4.0 and containing said salt in the form of anions, cations and colloidal salt particulates;
- (2) admixing said sol or gel composition obtained in step (1) with a latex of a polymer to produce a stable, noncoagulated product admixture composition containing a latex of a polymer and said salt in the form of cations, anions and colloidal salt particulates;
- and
- (3) drying said stable, noncoagulated product admixture composition obtained from step (2).
A process wherein a sol or gel composition containing (1) at least one salt in the form of anions, cations and salt particulates and (2) a nonaqueous solvent, is admixed with a latex of a polymer.
A stable, noncoagulated product admixture composition containing a latex of a polymer and a metallic cation or metallic anion and colloidal salt particulates, said product admixture composition prepared from a sol admixed with a latex of a polymer, and sol composition prepared by the following steps:
- (1) admixing
- (a) at least one solvent containing ethylene glycol,
- (b) at least one salt comprising a metallic cation or metallic anion, and
- (c) at least one stabilizer comprising citric acid or a nonionic surfactant, and
- (2) heating the admixture obtained in step (1) to an elevated temperature in the range from greater than room temperature to about 95.degree. C. and wherein a transparent sol containing a metallic cation or metallic anion and colloidal salt particulates is produced.
A product admixture composition comprising:
- (1) a latex of a polymer, and
- (2) a sol or gel composition containing (a) at least one salt in the form of anions, cations and colloidal salt particulates, (b) an organic solvent, and (c) a stabilizer.
Dependencies are inferred from the claim text.