CN1179456A - Adhesive - Google Patents

Abstract

An adhesive is prepared from polyvinyl alcohol (9.3%), hydrochloric acid (0.47%), solid sodium hydroxide (0.2%), corn starch (0.4%), ethylene-ethylene acetate (0.6%), pure water (85%), formaldehyde solution (4%), and n-octanol (0.03%) through mixing them together at a certain temp, and features high adhesion, not cracking easily and low cost.

Description

A kind of tackiness agent

The present invention relates to a kind of tackiness agent, is a kind of tackiness agent that is applicable to the sticking paper of paper particularly.

At present, be used for the tackiness agent of the sticking paper of paper, as 103 glue etc., it is low mostly to have bonding strength, folding easy fracture, and the high deficiency of production cost.

The present invention's purpose is to provide a kind of bonding strength height, folding not easy fracture, and the lower tackiness agent of production cost.

For reaching above-mentioned purpose, the present invention adopts following raw material and technology to realize:

Prescription (weight ratio):

The hydrochloric acid 0.47% of polyvinyl alcohol 9.3% 38%

Solid sodium hydroxide 0.2% W-Gum 0.4%

Ethene-vinyl acetate fat 0.6% pure water 85%

40% formalin 4% n-Octanol 0.03%

Technology:

1, the aqueous sodium hydroxide solution that at normal temperatures solid sodium hydroxide is added pure water preparation 10%;

2, nearly 1/3 pure water is heated to 90 ℃, adds in the W-Gum, is cooled to 12 ℃ after stirring, and adds in the ethene-vinyl acetate fat again, stirs;

3, remaining pure water is heated to 75 ℃, adds in the polyvinyl alcohol, stir and be warming up to 95 ℃, be incubated and be cooled to 80 ℃ after 25 minutes, splash into hydrochloric acid and formaldehyde again;

4,1,2,3 solution that obtain are mixed, add n-Octanol and be warming up to 95 ℃, keep reducing to room temperature voluntarily after 30 minutes.

Doing a step below in conjunction with embodiment introduces in detail:

Embodiment:

1, aqueous sodium hydroxide solution 20 grams that the water of 18 grams added preparation 10% in 2 solid sodium hydroxides that restrain;

2, the water of 250 grams is heated to the W-Gums of 90 ℃ of adding 4 grams, be cooled to 12 ℃ after stirring, the ethene-vinyl acetate fat that add 6 grams again stir, and make the solution of 260 grams;

3, the water with 582 grams is heated to 75 ℃, adds to stir in 93 polyvinyl alcohol that restrain to be warming up to 95 ℃, is incubated and is cooled to 80 ℃ after 25 minutes, splashes into the hydrochloric acid of 4.7 grams and the formaldehyde of 40 grams again, makes the solution of 719.7 grams;

4, obtain solution with 1,2,3 and mix the n-Octanol that the back adds 0.3 gram, be warming up to 95 ℃ and keep reducing to room temperature voluntarily after 30 minutes, obtain the tackiness agent of the present invention of 1000 grams.

Claims (1)

1, a kind of tackiness agent is characterized in that it is to be finished by following raw material and technology:

Proportioning raw materials (weight percent):

The hydrochloric acid 0.47% of polyvinyl alcohol 9.3%, 38%, solid sodium hydroxide 0.2%,

W-Gum 0.4%, ethene-vinyl acetate fat 0.6%, pure water 85%, 40%

Formalin 4%, n-Octanol 0.03%,

Technology:

A. the aqueous sodium hydroxide solution that at normal temperatures solid sodium hydroxide is added pure water preparation 10%;

B. nearly 1/3 pure water is heated to 90 ℃, adds in the W-Gum, is cooled to 12 ℃ after stirring, and adds in the ethene-vinyl acetate fat again, mixes thoroughly;

C. remaining pure water is heated to 75 ℃, adds in the polyvinyl alcohol, stir and be warming up to 95 ℃, be incubated and be cooled to 80 ℃ after 25 minutes, splash into hydrochloric acid and formaldehyde again;

D. the solution that a, b, c is obtained mixes, and adds n-Octanol, is warming up to 95 ℃, keeps reducing to room temperature voluntarily after 30 minutes.