Unlock instant, AI-driven research and patent intelligence for your innovation.

Water-resistant adhesive composition for wood

A technology of adhesives and compositions, applied in the direction of adhesives, adhesive types, unsaturated alcohol copolymer adhesives, etc., to achieve the effects of excellent coating and wettability, excellent water resistance adhesion, and excellent adhesion

Inactive Publication Date: 2006-10-25
株式会社大鹿
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to solve the above problems, and to provide an inexpensive wood adhesive composition with a long service life, excellent water resistance and heat resistance, which does not release the Complications, chemical allergies, etc. formaldehyde or irritating odor, and does not cause skin rashes, stains, discoloration of wood, and does not cause problems such as foaming and viscosity increase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-resistant adhesive composition for wood
  • Water-resistant adhesive composition for wood
  • Water-resistant adhesive composition for wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In this example, a carboxyl modified styrene-butadiene synthetic latex resin modified with itaconic acid (2.3% by weight of itaconic acid, 28% by weight of butadiene, and 69.7% by weight of styrene) was added. Resin component 50% by weight) 100 parts by weight, random copolymer modified polyvinyl alcohol polymer modified with itaconic acid (polymerization degree 1700, modification amount 2 mol%, saponification degree 98 mol%) 15 % Aqueous solution 100 parts by weight, and N,N,N',N'-tetraglycidyl-m-xylylenediamine ( 10 parts by weight of Mitsubishi Gas Chemical Corporation (trade name: TETRAD-X) were stirred to prepare a water-resistant adhesive composition for wood.

[0048] In the water-resistant adhesive composition for wood, relative to 100 parts by weight of the resin component contained in the carboxy-modified styrene-butadiene synthetic latex resin, the carboxy-modified polyvinyl alcohol polymer is added to the aqueous solution. The contained resin component contains ...

Embodiment 2

[0054] In this example, in addition to replacing the carboxyl modified styrene-butadiene synthetic latex resin used in Example 1, a carboxyl modified styrene-butadiene synthetic latex resin modified with acrylic acid (acrylic acid 5 wt% A water-resistant adhesive composition for wood was prepared in exactly the same manner as in Example 1, except that a terpolymer of 31% by weight of butadiene and 64% by weight of styrene and a resin component of 50% by weight).

[0055] Next, except that the water-resistant adhesive composition for wood obtained in this example was used, a test panel was produced in exactly the same manner as in Example 1, and the normal strength, water resistance, and water resistance of the test panel were measured in exactly the same manner as in Example 1. Hot water strength, resistance to repeated boiling strength.

[0056] Table 1 shows the measurement results of the adhesive strength (MPa). In addition, the percentage of the area of ​​fracture in the wood ...

Embodiment 3

[0058] In this example, in addition to replacing the carboxyl modified styrene-butadiene synthetic latex resin used in Example 1, a carboxyl modified styrene-butadiene synthetic latex resin modified with acrylic acid (acrylic acid 10 weight %, 31% by weight of butadiene, 59% by weight of styrene, and a resin component of 50% by weight), except that the water-resistant adhesive composition for wood was prepared in exactly the same manner as in Example 1.

[0059] Next, except that the water-resistant adhesive composition for wood obtained in this example was used, a test panel was produced in exactly the same manner as in Example 1, and the normal strength, water resistance, and water resistance of the test panel were measured in exactly the same manner as in Example 1. Hot water strength, resistance to repeated boiling strength.

[0060] Table 1 shows the measurement results of the adhesive strength (MPa). In addition, the percentage of the area of ​​fracture in the wood part rela...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

An inexpensive adhesive composition for wood which emits neither formaldehyde nor an irritative odor, causes neither skin rashes nor wood fouling / discoloration, has a long pot life, and is excellent in water resistance and heat resistance. The composition comprises: a main ingredient comprising a carboxy-modified aqueous emulsion or latex resin and an aqueous solution of a carboxy-modified polyvinyl alcohol polymer; and a compound having an N,N-diglycidylamino group as a tetrafunctional epoxy compound having a tertiary amino nitrogen atom. It comprises 100 pts.wt. of a carboxy-modified aqueous emulsion or latex resin having a modification amount of 0.1 to 20 wt.%, 0.2 to 270 pts.wt., in terms of resin amount, of an aqueous solution of a carboxy-modified polyvinyl alcohol polymer having a modification amount of 0.1 to 10 mol% and a degree of polymerization of 100 to 6,000, and 0 to 700 pts.wt. of a filler, and further contains 3 to 200 pts.wt. of the compound having an N,N-diglycidylamino group per 100 pts.wt. of the main ingredient.

Description

Technical field [0001] The present invention relates to a water-resistant adhesive composition for wood, in particular to a water-resistant adhesive composition for wood used in the manufacture of plywood or the secondary processing of plywood. Background technique [0002] Traditionally, wood adhesives using polyvinyl alcohol resins have been widely used. The polyvinyl alcohol resin has extremely excellent adhesion to cellulose, but its water resistance and heat resistance are poor. Therefore, the polyvinyl alcohol resin is blended with formaldehyde resins such as urea-formaldehyde resin, resorcinol-formaldehyde resin, and melamine-formaldehyde resin to impart water resistance and heat resistance to formaldehyde resin-based adhesives for wood. [0003] However, the free formaldehyde derived from the formaldehyde resin remains in the formaldehyde resin-based wood adhesive. Therefore, products bonded with the adhesive will release the formaldehyde, which may cause comorbidities an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/00C08G59/32C08L29/04C09J129/04C09J163/00
CPCC09J163/00C08G59/3227C08K5/17C08L29/04C08L63/00C08L2205/03C08L2666/02C08L2666/04C09J129/04
Inventor 岩崎雅春森永博泰村田裕司
Owner 株式会社大鹿