Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1996-10-25
1998-06-23
Hampton-Hightower, P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528322, 528332, 528335, 528336, 5283393, 528340, 528347, 524600, 524607, 524608, C08G 6908, C08G 7310, C08L 4708
Patent
active
057706808
ABSTRACT:
A process is provided for preparing a dispersion of a polyamide in water, said process comprising:
dissolving a polyamide having an amine value of greater than about 2 in an organic solvent to form a solution of said polyamide in said solvent, said polyamide and said solvent being at a temperature below the softening point of, said polyamide during said dissolving, said solution further comprising a surfactant and an inorganic alkaline material,
adding sufficient water containing an acid to said solution with mixing to form an oil-in-water dispersion, the temperature of said solution and said water being below the softening point of said polyamide during said adding, the amount of said acid being sufficient to neutralize a portion of said inorganic alkaline material, but insufficient to coagulate said polyamide from the resulting oil-in-water dispersion, and
removing at least a major amount of said organic solvent from said oil-in-water dispersion. The resulting dispersion is useful in preparing a coating of the polyamide, which coating is useful as an adhesive.
REFERENCES:
patent: 4853421 (1989-08-01), Hayes
patent: 4870119 (1989-09-01), Yee et al.
patent: 4886844 (1989-12-01), Hayes
patent: 5025043 (1991-06-01), Smith
patent: 5109054 (1992-04-01), Smith
patent: 5162490 (1992-11-01), Drawert et al.
Arora Kartar S.
Devore David I.
Fischer Stephen A.
Heucher Reimar
Hampton-Hightower P.
Meder Martin G.
Millson Henry E.
Szoke Ernest G.
LandOfFree
Aqueous dispersions of polyamides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous dispersions of polyamides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous dispersions of polyamides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1395390