Cationic aqueous bituminous emulsion-aggregate slurries

Patent 4810299 Issued on March 7, 1989. Estimated Expiration Date:

May 20, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Cationic bituminous emulsions
Patent #: 4017419
Issued on: 04/12/1977
Inventor: Ludwig , et al.

Cationic aqueous bituminous emulsion-aggregate slurries
Patent #: 4447269
Issued on: 05/08/1984
Inventor: Schreuders , et al.

Cationic bituminous emulsions
Patent #: 4450011
Issued on: 05/22/1984
Inventor: Schilling , et al.

Mixing of asphalt emulsion and aggregate in aqueous bituminous emulsion-aggregate slurries
Patent #: 4462840
Issued on: 07/31/1984
Inventor: Schilling , et al.

Emulsifiers for bituminous emulsions
Patent #: 4547224
Issued on: 10/15/1985
Inventor: Schilling

Asphalt emulsion
Patent #: 4548966
Issued on: 10/22/1985
Inventor: Moore

Cationic bituminous emulsions and emulsion aggregate slurries Patent #: 4597799
Issued on: 07/01/1986
Inventor: Schilling

Inventors

Assignee

Westvaco Corporation

Application

No. 07/197100 filed on 05/20/1988

US Classes:

106/277, Bituminous emulsion106/273.1, Bituminous material or tarry residue106/281.1, With filler, dye or pigment106/284.06, Nitrogen containing516/41, The agent contains organic compound containing sulfoxy*516/42, The compound contains -C(=O)OH or salt thereof516/43, The agent contains organic compound containing nitrogen, except if present solely as NH4+516/44The compound contains plural peptide linkages, i.e., compound formed from amino acids, natural or synthetic, by reaction of a carboxyl group of one such amino acid with an amino group of another same or different such amino acid

Examiners

Primary: Lieberman, Paul
Assistant: Kirschner, Helene

Attorney, Agent or Firm

International Classes

C07C 55/00 (20060101)
C07C 57/00 (20060101)
C07C 55/02 (20060101)
C07C 55/21 (20060101)
C07C 57/02 (20060101)
C08L 95/00 (20060101)
C09F 1/00 (20060101)
C09F 1/04 (20060101)
C07C 61/00 (20060101)
C07C 61/22 (20060101)

Abstract

Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamine with certain polycarboxylic acids and anhydrides. The modified polyamines are obtained by reacting suitable polyalkylene amines with a sugar-containing syrup, preferably molasses.