RELEASE AGENT AND METHOD OF MAKING MOULDED ARTICLES FROM COMPOSITE MATERIAL Russian patent published in 2016 - IPC B29C33/00 

FIELD: chemistry.

SUBSTANCE: release agent contains the following components: a) a phosphate of general formula

where X=R⁶, H, metal, $$N{R}_z{H}_{4-z}^{+}$$ , where z=0-4, and R = a hydrocarbon residue with 1-10 carbon atoms or a residue of formula

where m=0-5, and R¹-R⁶ independently denote hydrogen, a metal, preferably an alkali metal or alkali-earth metal, for example sodium or potassium, or $$N{R}_z{H}_{4-z}^{+}$$ , where z and R have values given above, or identical or different organic residues selected from branched or straight, acyclic or cyclic, alicyclic or heterocyclic, aliphatic, or aromatic, or heteroaromatic, substituted or unsubstituted, organic residues, or residues of formula

where R⁷ = branched or straight, acyclic or cyclic, alicyclic or heterocyclic, aliphatic, or aromatic, or heteroaromatic, substituted or unsubstituted organic residue, A or B denotes hydrogen, and the other corresponding residue denotes hydrogen, or a substituted or unsubstituted, straight or branched alkyl residue with 1-10 hydrocarbon atoms, and n assumes an average value from 1 to 100; b) at least one compound with molecular weight lower than 250 g/mol, containing hydroxyl groups; wherein component b) contains one or more diols, triols and/or polyvalent polyols; wherein content of component a) in the composition is 0.1-70 wt % and content of component b) in the composition is 0.5-90 wt %. The composition has water content of 80-98 wt %; wherein component a) is at least one inorganic phosphate, where X and R¹-R⁵ are not organic residues, and at least one organic phosphate, where at least one of the residues X and R¹-R⁵ is not H, a metal or $$N{R}_z{H}_{4-z}^{+}$$ , where R and z have values defined above; or component a) is a mono- and/or dioleyl phosphate of an alkali metal.

EFFECT: faster treatment, low treatment temperature and improved surface properties of articles.

8 cl, 2 tbl, 3 ex