CN104762010A - Formula and machining process of waterborne polyurethane dispersoid - Google Patents

Abstract

The invention relates to a formula and a machining process of waterborne polyurethane dispersoid. The machining process comprises the following steps: feeding a material I and a material II into a reaction kettle, heating to be 60 DEG C to react for 3 hours at 60-90 DEG C, cooling to be 50 DEG C, and adding a material III and a material IV; heating to be 80 DEG C to react for 3 hours at 80-90 DEG C, sampling, judging a reaction final point (n-butylamine titration method); after the reaction final point, adding a material VII to adjust the viscosity of resin, performing physical detection, after the product is qualified in the detection, adding a material V, and dispersing at a high speed to neutralize; adding the neutralized resin into a material VI (a chain expanding agent), uniformly stirring, filtering, and packaging. The formula and the machining process have the beneficial effects that the waterborne polyurethane dispersoid has a function of temporarily protecting the surface completeness of an article and a modification function that the article is attractive and graceful due to addition of pigment and paillettes, is non-toxic and odorless, has a function of environment protection, is good in oxidability and convenient and rapid, can be rapidly cured and molded, and can be peeled off as a whole.

Description

A kind of formula of aqueous polyurethane dispersion and complete processing thereof

Technical field

The present invention relates to a kind of formula and complete processing thereof of polyurethane dispersions, particularly relate to a kind of formula and complete processing thereof of aqueous polyurethane dispersion.

Background technology

Urethane is described as the different resin of best performance, and it is by the compound of the functional groups such as hydroxyl, carboxyl, amino and the macromolecular compound be obtained by reacting containing isocyanate-based compound.The excellent properties such as urethane has high rigidity, wear-resistant, strong adhesion, film-forming temperature are low, ambient temperature curable, but conventional urethane needs to add many organic solvents in actual application, causes serious harm to human health and environment.Along with the enhancing of people's environmental consciousness and health perception, development and the application of conventional urethane are restricted, not containing liguid organic solvent urethane by the urgent need to.

Aqueous polyurethane dispersion is a kind of using water to replace organic solvent as dispersion medium, does not contain or contain the urethane of minute quantity organic solvent in its dispersion liquid.Aqueous polyurethane has nontoxic odorless, pollution-free, nonflammable, cost is low, not easy damaged by coating surface, easy construction, be easy to the features such as cleaning, and there are high rigidity, the performance such as wear-resistant, are used widely at the multiple fields such as building coating, woodwork coating.

This case it is important to note that, the perfect performance of aqueous polyurethane in theory, but be developed so far, in practical application, also there is many deficiencies in aqueous polyurethane, such as time of drying is long, make quite a few price rate of exchange of starting material high, the cost of synthetic resins can be caused to increase, and in aqueous polyurethane molecule there is the shortcomings such as hardness is low, temperature tolerance is poor in the existence of hydrophilic radical and resin itself, have impact on its use.

Therefore, according to above analysis, need effectively to innovate prior art.

Summary of the invention

For above defect; the invention provides a kind of asepsis environment-protecting; there is no peculiar smell, the formula of the aqueous polyurethane dispersion can carry out provisional protection to the surface of nail, metal products, woodwork, plastics and other alloy material goods, decorate, beautifying and complete processing thereof.

For achieving the above object, the present invention is by the following technical solutions:

The formula of aqueous polyurethane dispersion and a complete processing thereof, be made up of following steps:

(1) first, prepare seven kinds of batchings, prepare burden a polyether prepolymer 140 parts-180 parts, batching Xylene Diisocyanate 120 parts-160 parts, three dimethylol propionic acid 70 parts-90 parts of preparing burden, four TriMethylolPropane(TMP) 30 parts-50 parts of preparing burden, five triethylamine 14 parts-16 parts of preparing burden, six quadrol 14 parts-16 parts of preparing burden, 45 parts-55 parts, seven water of preparing burden;

(2) batching one and batching two are put in reactor, be warming up to 60 DEG C;

(3) 60 DEG C-90 DEG C reaction maintenances 3 hours, be then cooled to 50 DEG C, add batching three and batching four;

(4) be warming up to 80 DEG C, 80 DEG C-90 DEG C reactions 3 hours, then sampling judged reaction end (n-Butylamine titration method);

(5) after reaction end, add batching seven and adjust resin viscosity, after physical detection is qualified, add the neutralization of batching five high speed dispersion;

(6) by become reconciled after resin add batching six (chain extension connects) and stir, filter and package.

The formula of aqueous polyurethane dispersion of the present invention and the beneficial effect of complete processing thereof are:

(1) aqueous polyurethane dispersion made according to formula and complete processing is smeared, is sprayed at the surface of nail, metal products, woodwork, plastics and other alloy material goods, a kind of protective membrane can be formed, avoid body surface to swipe, wear and tear, there is the effect of temporary protection article surface integrity;

(2) in the aqueous polyurethane dispersion made according to formula and complete processing, various finishing material is added, one deck multicolored ornamental is formed on the surface of nail, metal products, woodwork, plastics and other alloy material goods, the apparent visual feature of article can be changed, attractive in appearance, generous modification is played to nail, metal products, woodwork, plastics and other alloy material goods;

(3) aqueous polyurethane dispersion made according to this formula and complete processing is dispersion medium with water, only has moisture evaporation in air, meets the requirement of environment protection, can not cause environmental pollution in the process of freezing film, and nonpoisonous and tasteless.

(4) the aqueous polyurethane dispersion oxidisability according to this formula and complete processing making is good, sprays and very easily oxidizing reaction occurs in atmosphere, quick solidification forming.Chain extension connects and makes product physical strength and Joint strength greatly adding of raw material, can entirety peel off, convenient and swift.

Embodiment

embodiment 1

The formula of a kind of aqueous polyurethane dispersion described in the embodiment of the present invention and complete processing, form primarily of following steps:

(1) formula batching is prepared, prepare burden a polyether prepolymer 160 parts, batching Xylene Diisocyanate 140 parts, three dimethylol propionic acid 80 parts of preparing burden, four TriMethylolPropane(TMP) 40 parts of preparing burden, five triethylamine 15 parts of preparing burden, six quadrol 15 parts of preparing burden, 50 parts, seven water of preparing burden;

(2) batching one and batching two are put in reactor, be warming up to 60 DEG C;

(3) 60 DEG C-90 DEG C reaction maintenances 3 hours, be then cooled to 50 DEG C, add batching three and batching four;

(4) be warming up to 80 DEG C, 80 DEG C-90 DEG C reactions 3 hours, then sampling judged reaction end (n-Butylamine titration method);

(5) after reaction end, add batching seven and adjust resin viscosity, after physical detection is qualified, add the neutralization of batching five high speed dispersion;

(6) by become reconciled after resin add batching six (chain extension connects) and stir, filter and package.

embodiment 2

The formula of a kind of aqueous polyurethane dispersion described in the embodiment of the present invention and complete processing, form primarily of following steps:

(1) formula batching is prepared, prepare burden a polyether prepolymer 140 parts, batching Xylene Diisocyanate 120 parts, three dimethylol propionic acid 70 parts of preparing burden, four TriMethylolPropane(TMP) 30 parts of preparing burden, five triethylamine 14 parts of preparing burden, six quadrol 14 parts of preparing burden, 45 parts, seven water of preparing burden;

(2) batching one and batching two are put in reactor, be warming up to 60 DEG C;

(3) 60 DEG C-90 DEG C reaction maintenances 3 hours, be then cooled to 50 DEG C, add batching three and batching four;

(4) be warming up to 80 DEG C, 80 DEG C-90 DEG C reactions 3 hours, then sampling judged reaction end (n-Butylamine titration method);

(5) after reaction end, add batching seven and adjust resin viscosity, after physical detection is qualified, add the neutralization of batching five high speed dispersion;

(6) by become reconciled after resin add batching six (chain extension connects) and stir, filter and package.

embodiment 3

The formula of a kind of aqueous polyurethane dispersion described in the embodiment of the present invention and complete processing, form primarily of following steps:

(1) formula batching is prepared, prepare burden a polyether prepolymer 180 parts, batching Xylene Diisocyanate 160 parts, three dimethylol propionic acid 90 parts of preparing burden, four TriMethylolPropane(TMP) 50 parts of preparing burden, five triethylamine 16 parts of preparing burden, six quadrol 16 parts of preparing burden, 55 parts, seven water of preparing burden;

(2) batching one and batching two are put in reactor, be warming up to 60 DEG C;

(3) 60 DEG C-90 DEG C reaction maintenances 3 hours, be then cooled to 50 DEG C, add batching three and batching four;

(4) be warming up to 80 DEG C, 80 DEG C-90 DEG C reactions 3 hours, then sampling judged reaction end (n-Butylamine titration method);

(5) after reaction end, add batching seven and adjust resin viscosity, after physical detection is qualified, add the neutralization of batching five high speed dispersion;

(6) by become reconciled after resin add batching six (chain extension connects) and stir, filter and package.

Above embodiment is the several of the present invention's more preferably embodiment, and the usual change that those skilled in the art carry out within the scope of the technical program and replacing should be included in protection scope of the present invention.

Claims (1)

1. the formula of aqueous polyurethane dispersion and a complete processing thereof, is characterized in that: be made up of following steps:

(1) first, prepare seven kinds of formula batchings, prepare burden a polyether prepolymer 140 parts-180 parts, batching Xylene Diisocyanate 120 parts-160 parts, three dimethylol propionic acid 70 parts-90 parts of preparing burden, four TriMethylolPropane(TMP) 30 parts-50 parts of preparing burden, five triethylamine 14 parts-16 parts of preparing burden, six quadrol 14 parts-16 parts of preparing burden, 45 parts-55 parts, seven water of preparing burden;

(2) batching one and batching two are put in reactor, be warming up to 60 DEG C;

(3) 60 DEG C-90 DEG C reaction maintenances 3 hours, be then cooled to 50 DEG C, add batching three and batching four;

(4) be warming up to 80 DEG C, 80 DEG C-90 DEG C reactions 3 hours, then sampling judged reaction end (n-Butylamine titration method);

(5) after reaction end, add batching seven and adjust resin viscosity, after physical detection is qualified, add the neutralization of batching five high speed dispersion;

(6) by become reconciled after resin add batching six (chain extension connects) and stir, filter and package.