Adhesives containing copolymers having repeating units of amide groups and carboxyl groups and / or their ammonium salts, and artificial boards prepared using the same.

Abstract

The present disclosure relates to an adhesive comprising at least one copolymer A described below. Copolymer A has at least one repeating unit having an amide group and a carboxy group and / or an ammonium salt thereof, and at least one other repeating unit different from the repeating unit having an amide group and a carboxy group and / or an ammonium salt thereof. The present disclosure also relates to an artificial board formed from the lignocellulosic material and the adhesive, and a method for producing the artificial board.

Claims

[Claim 1] An adhesive comprising at least one copolymer A as described below, The copolymer A has at least one repeating unit having an amide group and a carboxyl group and / or an ammonium salt thereof, and at least one other repeating unit different from the one having an amide group and a carboxyl group and / or an ammonium salt thereof. The aforementioned other repeating units are gasoline, C ８ Distillate, C ９ Derived from at least one monomer containing a carbon-carbon unsaturated double bond, which is generated from the reaction materials of the fraction or the light fraction of coal tar. The preparation of copolymer A includes a polymerization reaction in which gasoline, C8 fraction, C9 fraction, or light coal tar fraction is used directly without separation. glue. [Claim 2] The adhesive according to claim 1, wherein the amount of repeating units having an amide and a carboxyl group and / or an ammonium salt thereof in the copolymer A is 10-80% by weight, based on the total amount of repeating units in copolymer A. [Claim 3] The adhesive according to claim 2, wherein the amount of repeating units having an amide and a carboxyl group and / or an ammonium salt thereof in the copolymer A is 30-70% by weight, based on the total amount of repeating units in copolymer A. [Claim 4] The other repeating units of copolymer A are C ８ Distillate, C ９ The adhesive according to any one of claims 1 to 3, derived from at least one monomer containing a carbon-carbon unsaturated double bond, which is generated from the reaction material of a fraction or a light fraction of coal tar. [Claim 5] The adhesive according to any one of claims 1 to 4, wherein the copolymer A further comprises additional repeating units derived from at least one monomer having at least two non-conjugated carbon-carbon unsaturated double bonds. [Claim 6] The adhesive according to claim 5, wherein the non-conjugated carbon-carbon unsaturated double bonds in the monomer having at least two non-conjugated carbon-carbon unsaturated double bonds are selected from (meth)acrylic acid groups, (meth)acrylamide groups, vinyl groups, allyl groups, and non-conjugated carbon-carbon double bonds in alkenes or cycloalkenes. [Claim 7] The adhesive according to any one of claims 1 to 6, wherein the copolymer A is derived from copolymer B, and copolymer B has at least one repeating unit having an anhydride group. [Claim 8] The adhesive according to claim 7, wherein the copolymer A is derived from the reaction of copolymer B with ammonia. [Claim 9] The adhesive according to claim 7 or 8, wherein the anhydride group on the copolymer B is introduced into the copolymer B by polymerization of at least one monomer having a carbon-carbon unsaturated double bond and an anhydride group. [Claim 10] The adhesive according to claim 9, wherein the monomer having a carbon-carbon unsaturated double bond and an anhydride group is selected from monoethylenically unsaturated dicarboxylic acid anhydrides having 4 to 8 carbon atoms. [Claim 11] The adhesive according to claim 10, wherein the monomer having a carbon-carbon unsaturated double bond and an anhydride group is selected from maleic anhydride, itaconic anhydride, citraconic anhydride, and methylenemalonic anhydride. [Claim 12] The copolymer B is a copolymer formed from at least one monomer having a carbon-carbon unsaturated double bond and an anhydride group, and at least one other monomer containing a carbon-carbon unsaturated double bond. Other monomers containing carbon-carbon unsaturated double bonds include gasoline, C ８ Distillate, C ９ Derived from reaction materials selected from fractions or light fractions of coal tar, The adhesive according to any one of claims 7 to 11. [Claim 13] The adhesive according to any one of claims 7 to 12, wherein the copolymer B further comprises additional repeating units derived from at least one monomer having at least two non-conjugated carbon-carbon unsaturated double bonds. [Claim 14] The adhesive according to any one of claims 1 to 13, wherein the adhesive is in solid form; or in aqueous composition form. [Claim 15] The adhesive according to any one of claims 1 to 14, wherein the adhesive does not contain an organic crosslinking agent capable of covalently crosslinking with the amide group and / or carboxyl group of copolymer A. [Claim 16] An artificial board formed from a lignocellulose material and an adhesive according to any one of claims 1 to 15. [Claim 17] The artificial board according to claim 16, wherein the amount of solid-based adhesive is 1-45% by weight, based on the total weight of the artificial board. [Claim 18] The artificial board according to claim 16 or 17, wherein the amount of copolymer A specified by any one of claims 1 to 14 is 1 to 40% by weight, based on the total weight of the artificial board. [Claim 19] The artificial board according to any one of claims 16 to 18, wherein the adhesive is used as a matrix resin. [Claim 20] The artificial board according to any one of claims 16 to 19, wherein the artificial board is a particle board, plywood, density board, fiberboard, straw board, or finger joint board. [Claim 21] A method for preparing an artificial board, comprising using an adhesive specified by any one of claims 1 to 15. [Claim 22] The method according to claim 21, comprising pressing a mixture of lignocellulose material and the adhesive at a temperature of 105–300°C and a pressure of 0.4–10 MPa. [Claim 23] The method according to claim 21 or 22, wherein the artificial board is the artificial board described in any one of claims 16 to 20. [Claim 24] Uses of the adhesive according to any one of claims 1 to 15 in the preparation of a lignocellulose-based artificial board.

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