Patent GB-1046511-A (GB)
Title: Coating compositions containing organosilicon compounds
IPC: C09K23/00
Filed: 1963-01-22
Abstract: A coating composition comprises, by weight per 100 pts. of the composition, (1)-from 1 to 50 pts. of an organic or organosilicon compound capable of forming a polymeric coating, (2) from 0.001 to 30 pts. of a block copolymer comprised of (a) at least one siloxane block containing at least two units of the formula <FORM:1046511/C3/1> wherein R is a monovalent saturated or unsaturated hydrocarbon (h.c.) or halo-h.c., or divalent h.c. radical and b is 1, 2 or 3, the block containing at least 1 unit in which at least 1 R is a divalent h.c. radical, and (b) at least 1 oxyalkylene block containing at least 2 groups of the formula -R1O-, wherein R1 is an alkylene radical, the siloxane and oxyalkylene blocks being interconnected by the divalent h.c. radical, and (3) from 20 to 98.999 pts. of water or a liquid organic diluent.  The siloxane blocks may also contain units of the formula <FORM:1046511/C3/2> wherein e is 0, 1 or 2, f is 1 or 2 and e and f is 1, 2 or 3. Numerous examples are given of (a) compounds (1), which can be drying and semi-drying oils, natural varnish and enamel resins, synthetic varnish and enamel resins (Phenol/aldehyde, alkyd and cumar resins), organic rubbers (butadiene-styrene or -acrylonitrile copolymers; chloroprene, isobutylene and isobutylene-isoprene polymers), acrylate and methacrylate resins, cellulose derivatives, epoxy resins and reaction products thereof with amino-organosilicon compounds, silicone resins, amino-organosilicon compounds, urea/formaldehyde and melamine/formaldehyde resins, and vinyl halide resins, and (b) diluents (3) which include hydrocarbons (h.c.'s), chlorinated h.c.'s, nitrated paraffins, ethers and alcohols.  The organic compound (1) can be a polymer or can comprise one or more monomers which can be introduced into the diluent, e.g. water, containing the block copolymer (which acts as an emulsifier or suspension stabilizer) and be polymerized in known manner.  Optional additives include ketones, esters and aldehydes (as anti-blush, anti-craze or levelling agents), acids, pigments, other colouring agents, fillers, plasticizers, driers and resins (silicone or organic).  The compositions may be used in aerosol form by adding thereto the usual propellents. The compositions can be cured, after application to the desired surface, by exposure to atmospheric conditions or by heating, e.g. from 100 DEG  to 300 DEG  C. Examples are given.  Uses:  For coating metal, ceramic, cementitious and wood surfaces.  Reference has been directed by the Comptroller to Specification 916,561.ALSO:A metal, ceramic, cementitious or wood surface, many examples of which are given, is coated by applying thereto, as by brushing, dipping, knife-coating, spraying (including aerosols), roller-coating, or flooding, a composition comprising, by weight per 100 pts. of the composition, (1) from 1 to 50 pts. of an organic or organosilicon compound capable of forming a polymeric coating, (2) from 0.001 to 30 pts. of a siloxane-oxyalkylene block copolymer (See Div. C3), and (3) from 20 to 98.999 pts. of water or a liquid organic diluent, and curing the applied composition, e.g. by exposure to atmospheric conditions or by heating at 100 DEG  to 300 DEG C.  Numerous examples are given of (a) compounds (1), which can be drying and semi-drying oils, natural varnish and enamel resins, synthetic varnish and enamel resins (phenol/aldehyde, alkyd and cumar resins), organic rubbers (butadiene-styrene or -acrylonitrile copolymers; chloroprene, isobutylene and isobutylene-isoprene polymers), acrylate and methacrylate resins, cellulose derivatives, epoxy resins and reaction products thereof with amino-organosilicon compounds, silicone resins, amino-organosilicon compounds, urea/formaldehyde and melamine/formaldehyde resins, and vinyl halide resins, and (b) diluents (3) which include hydrocarbons, chlorinated hydrocarbons, nitrated paraffins, ethers and alcohols.  Compound (1) can be a polymer or can comprise one or more monomers which can be introduced into the diluent, e.g. water, containing the block copolymer, and be polymerized in known manner.  Optional additives include ketones, esters and aldehydes (as anti-blush, anti-craze or levelling agents), acids pigments, other colouring agents, fillers, plasticisers, driers and resins.  Examples are given.  Reference has been directed by the Comptroller to Specification 916,561.