Method for producing interpenetrating polymer network material, a product thereof and use of the product
AssigneeKemira Oyj
InventorsRosa Carceller, Tom Lundin, Matti Hietaniemi
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Abstract
The present invention relates to an interpenetrating polymer network (IPN) material comprising microcrystalline cellulose (MCC), microfib-rillated cellulose (MFC) or a mixture thereof, and at least one polymer forming an IPN together with the MCC, MFC or mixture thereof. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
Claims17
An interpenetrating polymer network (IPN) material comprising:
- microfibrillated cellulose (MFC);
- and
- at least one polymer forming the IPN together with the MFC, wherein said at least one polymer is formed in a polymerization reaction of at least one monomer,
- wherein at least one of said at least one monomer is acrylamide and said at least one monomer comprises at least one cationic monomer,
- wherein the IPN is water-soluble and/or non-crosslinked, and
- wherein an amount of the MFC is 0.5-15 wt. %, based on an amount of the IPN material.
A process for producing an interpenetrating polymer network (IPN) material comprising:
- i) providing an aqueous solution comprising microfibrillated cellulose (MFC) and at least one monomer, wherein at least one of said at least one monomer is acrylamide and said at least one monomer comprises at least one cationic monomer;
- ii) polymerizing in situ said at least one monomer to form IPN together with the MFC;
- and
- iii) obtaining the IPN material,
- wherein the IPN is water-soluble and/or non-crosslinked, and
- wherein an amount of the MFC is 0.5-15 wt. %, based on an amount of the IPN material.
The process according to claim/wherein the at least one monomer is selected from a group consisting of acrylamide, N-methylolacrylamide, N-methylol(meth)acrylamide, N, N-dimethylaminopropylmethacrylamide, N, N-dimethylaminoethylacrylamide, N-[2-(dimethylamino)-1,1-dimethylethyl]acrylamide, cationic monomers selected from a group consisting of 2-(acryloyloxy)ethyl]trimethylammonium chloride, (3-acrylamidopropyl)trimethyl ammonium chloride, [2-(methacryloyloxy)ethyl]-trimethylammoniumchloride, [3(methacryoylamino)propyl]trimethylammonium chloride, 2-(diethylamino)ethyl acrylate, 2-(dimethylamino)ethyl acrylate, anionic monomers selected from a group consisting of acrylic acid, acryloyl chloride, methacrylic acid, 2-acrylamido-2-methylpropane sulfonic acid, sodium 2(acryloylamino)2-methyl-1-propanesulfonate, or mixtures thereof;
- the monomers being acrylamide and cationic monomer selected from a group consisting of 2-(acryloyloxy)ethyl]trimethylammonium chloride, (3 acrylamidopropyl)trimethyl ammonium chloride, [2-(methacryloyloxy)ethyl]-trimethylammonium chloride, [3-(methacryoylamino)propyl]trimethylammonium chloride, or the monomers being acrylamide and [2-(acryloyloxy)ethyl]trimethyl ammonium chloride.
Dependencies are inferred from the claim text.