FILM FORMATION WITH CALCITE
A composition which, when mixed with a polymer composition, allows for the formation of a continuous and cohesive film. The film is characterized in that it provides water, grease and oil resistance, provides a water vapour barrier and can used as wax replacement treatment and a top coat for flexible packaging, but also on other substrates. This film is formed at a very fast set speed without the need of thermal energy. The composition contains i) calcite alone or in combination with a salt of one or more of myristic, palmitic and stearic acid; and also ii) a C 9 -C 18 fatty acid complex of a metal ion, the metal ion having an oxidation state of at least 3. The composition is incorporated in material such as cellulose based material or plastic based material.
1 - 35 . (canceled)
36 . A composition comprising:
a) calcite alone or in combination with a salt of one or more of myristic, palmitic and stearic acid; and
b) a C 9 -C 18 fatty acid complex of a metal ion, said metal ion having an oxidation state of at least 3; and/or a polymeric composition comprising a polymer, copolymer, mixtures of polymers or copolymers.
37 . The composition of claim 1 , wherein the calcite is from a natural material.
38 . The composition of claim 37 , wherein the natural material is a mineral-derived material or a biological material.
39 . The composition of claim 38 , wherein the mineral-derived material is limestone or a sedimentary rock.
40 . The composition of claim 37 , wherein the natural material is at least one of egg shell, seashell, red algae, sponge, brachiopod, echinoderm, bryozoa, and shell of bivalve.
41 . The composition of claim 40 , wherein the seashell is from oysters, lobsters, scallops, Japanese littlenecks, turban shells, fresh water clams, or abalones.
42 . The composition of claim 1 , wherein the salt of one or more of myristic, palmitic and stearic acid is selected from the group consisting of calcium stearate and zinc stearate; or wherein the polymeric composition comprises a polymer, copolymer or a mixture of polymers or copolymers selected from the group consisting of styrene butadiene copolymers, modified styrene butadiene copolymers, styrene/acrylate copolymers, carboxylated polystyrene, acrylic/polyacrylic polymers, polyvinyl acetate, polypolyvinyl alcohol, polyvinylacetate-ethylene, polyvinyl acrylic, corn zein, starch, and polyvinylidene chloride.
43 . A process for providing water, vapour, oil and grease resistance to a material comprising
I) combining a) calcite alone or in combination with a salt of one or more of myristic, palmitic and stearic acid; b) a polymeric composition comprising a polymer, copolymer, mixtures of polymers or copolymers; and/or c) a C 9 -C 18 fatty acid complex of a metal ion, said metal ion having an oxidation state of at least 3; and
II) allowing a film to form on the material at a temperature less than 50° C.
44 . The process of claim 43 , wherein the film is formed without added thermal or microwave energy.
45 . The process of claim 43 , wherein in step I), a) comprises 20 to 40% by weight and b) comprises 80 to 60% by weight.
46 . The process of claim 43 , wherein said salt in a) is calcium stearate and said metal ion in c) is chromium ion.
47 . The process of claim 43 , wherein the calcite is from a natural material.
48 . The process of claim 47 , wherein the natural material is a mineral-derived material or a biological material.
49 . The process of claim 48 , wherein the mineral-derived material is limestone or a sedimentary rock.
50 . The process of claim 47 , wherein the natural material is at least one of egg shell, seashell, red algae, sponge, brachiopod, echinoderm, bryozoa, and shell of bivalve.
51 . The process of claim 50 , wherein the seashell is from oysters, lobsters, scallops, Japanese littlenecks, turban shells, fresh water clams, or abalones.
52 . The process of claim 43 , further comprising combining d) a tackifier resin, in the presence of an aqueous solvent.
53 . The process of claim 43 , wherein said material is a cellulose based material or a plastic-based material.
54 . The process of claim 43 , wherein said material is paper, cardboard, wood, paperboard, medium liner or kraft paper.
55 . The process of claim 43 , wherein said material is a plastic injected mold, tube, film, fibre, tissue, mastic, plastic coating, extrusion present in cellulose support, or wrapping package.
56 . The process of claim 53 , wherein said plastic based material is from vinyl, polyterephthalate, polypropylene (PP), polystyrene (PS), high impact polystyrene (HIPS), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET), polyester (PES), polyamides (PA) (Nylons), poly(vinyl chloride) (PVC), polyurethanes (PU), polycarbonate (PC), polyethylene (PE), high-density polyethylene (HDPE), low-density polyethylene (LDPE), polymethyl methacrylate (PMMA), acrylic styrene acrylonitrile (ASA), acrylic, acrylonitrile-butadiene styrene (ABS), melamine, formaldehyde urea, phenolic resin, polybutylene, polyphenyl oxide or phenoplast (PF).