RESIN DISPERSION
Disclosed is a resin dispersion, a method for production thereof and a product. According to the invention, a resin dispersion may b prepared, during the processing of which the release of polluting materials may be avoided, wherein the resin dispersion contains (I) 30 to 100 wt. % epoxide resin, 0-70 wt. % Novolak resin based on the mass of both resin components, (II) 4 to 18 wt. %, based on the total weight, of a co-dispersing agent made from ricin oil ethoxylate, hydrated ricin oil ethoxylate, alkylphenol ethoxylate, fatty alcohol ethoxylate, oleic acid ethoxylate, oxoalcohol ethoxylate, fatty alcohol alkoxylate and/or polyvinyl alcohol and (III), optionally, 0 to 20 wt. %, based on the total mass, of further conventional adjuncts.
1 . An aqueous resin dispersion comprising:
(I) 30 to 100 weight percent of epoxy resin and 0-70 weight percent of novolak resin based on the mass of both resin components and also
(II) 4 to 18 weight percent based on the overall mass of a codispersant based on castor oil ethoxylate, hydrogenated castor oil ethoxylate, alkylphenol ethoxylate, fatty alcohol ethoxylate, oleic acid ethoxylate, oxo process alcohol ethoxylate, fatty alcohol alkoxylate and/or polyvinyl alcohol.
2 . The aqueous resin dispersion of claim 1 comprising:
(I) 30 to 80 weight percent of epoxy resin and 70-20 weight percent of novolak resin based on the mass of both resin components and also
(II) 4 to 18 weight percent based on the overall mass of a codispersant based on castor oil ethoxylate, hydrogenated castor oil ethoxylate, alkylphenol ethoxylate, fatty alcohol ethoxylate, oleic acid ethoxylate, oxo process alcohol ethoxylate, fatty alcohol alkoxylate and/or polyvinyl alcohol.
3 . The resin dispersion of claim 1 wherein the epoxy resin melts at a temperature <90° C.
4 . The resin dispersion of claim 1 wherein the novolak resin is a phenol-formaldehyde resin prepared using a phenol:formaldehyde ratio in the range from 1:0.4 to 1:0.8.
5 . The resin dispersion of claim 1 wherein the codispersant is present in an amount in the range from 3% to 10% by weight based on the overall mass.
6 . The resin dispersion of claim 1 further comprising a a stabilizer.
7 . The resin dispersion of claim 1 further comprising one or more of a catalyst, dyes or wetting agents.
8 . A process for producing the aqueous resin dispersion of claim 1 comprising:
a. admixing the codispersant to the constituent (I) present essentially as a melt, and
b. admixing water at temperatures <100° C. to the mixture obtained in step a).
9 . The process of claim 8 wherein a stabilizer is added in step b).
10 . The process of claim 8 wherein after obtaining the mixture in step b) the resin dispersion is admixed with on or more of catalysts, dyes or wetting agents.
11 . A process for producing the aqueous resin dispersion of claim 1 comprising admixing constituents (I) and (II) with by introducing shearing energy.
12 . A product having a crosslinked or uncrosslinked surficial layer produced by applying the resin dispersion according to claim 1 .
13 . The use of the aqueous resin dispersion of claim 1 for modifying textile, mineral, metallic or polymeric surfaces in the form of fibers, fibrous nonwoven webs, wovens, wools or smooth surfaces.