Storage stable binders

Claim 2

A BINDER COMPOSITION COMPRISING, IN PARTS BY WEIGHT, 60 TO 120 PARTS OF COMPONENT A, WHICH IS AT LEAST ONE ALKYL SILICATE OR ALKYL POLYSILICATE, THE ALKYL RADICAL OF WHICH CONTAINS ONE TO THREE CARBON ATOMS, 3 TO 25 PARTS OF COMPONENT B, WHICH IS AT LEAST ONE ALKYL TITANATE OR ALKYL POLYTITANATE, THE ALKYL RADICAL OF WHICH CONTAINS THREE TO EIGHT CARBON ATOMS, 10 TO 20,000 PARTS OF COMPONENT C, WHICH IS AT LEAST ONE FILM FORMING RESIN SELECTED FROM THE GROUP CONSISTING OF (A) FILM FORM ORGANIC RESINS CONTAINING AT LEAST THE ELEMENTS CARBON, HYDROGEN AND OXYGEN BUT NOT SILICON, (B) FILM FORMING ORGANIC RESINS CONTAINING AT LEAST THE ELEMEMTS CARBON HYDROGEN, OXYGEN AND SILICON AND (C) CO CONDENSATION PRODUCTS OR ORGANIC RESINS (A) WITH ORGANIC RESINS (B), AND 20 TO 1,500 PARTS OF COMPONENT D, WHICH IS AN ORGANIC SOLVENT.

Claim 3

A composition according to claim 1, wherein in the component B, the alkyl radicals are isopropyl, butyl or hexyl.

Claim 4

A composition according to claim 1, wherein the component D is an aliphatic hydrocarbon or five to 20 carbon atoms, an aromatic hydrocarbon or an alkanol.

Claim 5

A composition according to claim 1, wherein the component C is an alkyd reson modified with styrene, a polyester resin, an organo polysiloxane which contains for each silicon atom 1-1.8 organic groups bonded to silicon, which organic groups are methyl and phenyl groups and 0.001-1.5 free hydroxyl or alkoxy groups, or a co-condensate of a polyester and said organopolysiloxane.

Claim 6

A composition according to claim 1 comprising at least 0.5 percent by weight (based on the weight of components A, B, C and D) of an alkyltriacyloxysilane or a composition comprising a polysiloxane which has been treated with an alkyltriacyloxysilane.

Claim 7

A composition according to claim 5, wherein the alkyltriacyloxysilane is methyltriacetoxysilane.

Claim 8

A composition according to claim 1, which comprises 70-100 parts of constituent A, which is at least one silicate selected from the group consisting of ethyl silicate, hexaethoxydisiloxane and ethylpolysilicate containing silicon in an amount of 40-45 percent by weight (expressed as silica), 5-20 parts of constituent B, which is at least one titanate selected from the group consisting of isopropyl titanate, butyl titanate n-hexyltitanate and polytitanate containing titanium in an amount of titanium of 33-38 percent by weight (expressed as titanium dioxide), 12-1,700 parts of constituent C, which is at least one resin selected from the group consisting of alkyd resins, based on soya oil, alkyd resins modified by styrene, organopolysiloxanes having repeating units of formula (CH3)2SiO and C6H5SiO1.5 in the number ratio 0.66:1 containing 2.9-3.4 percent of weight of hydroxyl groups bonded to silicon atoms, and a co-condensate of said organopolysiloxane and a polyester, and 40-1,200 parts of constituent D which is at least one solvent selected from the group consisting of paraffin hydrocarbons, toluene, xylene and butanol.

Claim 9

A curable composition, which comprises a filler and a binder according to claim 1.

Claim 10

A composition according to claim 8, wherein the filler is at least one selected from the group consisting of zinc powder, titanium oxide, an iron oxide, mica and barium metaborate.