Adhesives containing copolymers having repeating units of amide groups and carboxyl groups and / or their ammonium salts, and artificial boards prepared using the same.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- BEIJING UNIV OF CHEM TECH
- Filing Date
- 2021-01-07
- Publication Date
- 2026-06-15
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Claims
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.
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.
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.
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.
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.
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.
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.
8. The adhesive according to claim 7, wherein the copolymer A is derived from the reaction of copolymer B with ammonia.
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.
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.
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.
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.
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.
14. The adhesive according to any one of claims 1 to 13, wherein the adhesive is in solid form; or in aqueous composition form.
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.
16. An artificial board formed from a lignocellulose material and an adhesive according to any one of claims 1 to 15.
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.
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.
19. The artificial board according to any one of claims 16 to 18, wherein the adhesive is used as a matrix resin.
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.
21. A method for preparing an artificial board, comprising using an adhesive specified by any one of claims 1 to 15.
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.
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.
24. Uses of the adhesive according to any one of claims 1 to 15 in the preparation of a lignocellulose-based artificial board.