CN1557894A - Polyurethane dull white paint for woodenware - Google Patents

Abstract

The present invention is one kind of dull white finishing polyurethane paint for wood ware. The present invention features that the dull white finishing paint is compounded with three components, including the component A comprising modified alkyd resin, titanium white powder, nitro cotton, etc.; the component B comprising n-butyrate and HDI-90; and component C comprising n-butyrate and toluene. The dull white finishing paint has excellent yellowing resistance, powerful adhesion, high hardness, high wear resistance, good leveling property, and high environment protecting property.

Description

The urethane that a kind of woodenware the is used light white finish paint of making mute

Technical field

The present invention relates to technical field of coatings, specifically a kind of woodenware is with the mute light white finish paint of urethane.

Background technology

The mute light white finish paint of urethane is a kind of whitewash of high comprehensive performance, is widely used in wood decoration.Conventional finish paint is brought phenyl ring (tolylene diisocyanate and TriMethylolPropane(TMP) prepolymer) into because of containing in the resin in double-stranded and the solidifying agent, joins and easily turns to be yellow after painting film, ftractures, and greatly reduces the degree of beautifying of furniture.

Summary of the invention

The objective of the invention is to overcome the shortcoming of prior art, propose a kind of quick-dry type, the mute light white finish paint of anti-xanthochromic urethane.

The mute light white finish paint of urethane of the present invention is formulated by following three kinds of components, concrete preparation process:

(1) the first component is the hydroxyl component, and preparation technology is:

With 23.3% Oleum Cocois Synolac, 0.2% Ricinate, 0.5% pimelinketone, 1.0% dimethylbenzene, 25% Rutile type Titanium Dioxide adds successively, stir, disperse the back sand milling to fineness≤25um, and then add the Synolac of 12.5～14.5% Oleum Cocois successively, 12～1/18%th 2 seconds nitro-cotton liquid (25% butyl ester liquid), 4.0% positive butyl ester, 2.0% polyethylene wax slurry, the 0.1%BYK-163 Ricinate, the C805 flatting silica that 5.0% U.S. W. R. Grace ﹠ Co produces, 0.2% defoamer, 0.3% flow agent, 2.0% pimelinketone, 7.5% dimethylbenzene, 0.4% positive butyl ester, dispersed with stirring 15～20min is to fineness≤25um, after viscosity adjustment to 5000～6000CPS/25 ℃ the first component, above-mentioned percentage ratio is 100 in first component raw material weight sum;

(2) preparation technology of component B is:

With 50～60% positive butyl ester of dehydration and 40～50%HDI-90 hexamethylene diisocyanate homopolymer, mixing, it is standby to obtain the component B sealing;

(3) third components are thinner, the dimethylbenzene of 50～60% positive butyl esters and 40～50% is mixed obtain third component;

(4) first, second, the third three components can be used by 1: 0.4～0.6: 0.5～0.6 weight ratio even after-filtration that is mixed, 25 ℃ following duration of service about 4h.

In the raw material of the present invention, the Oleum Cocois Synolac is that the trade mark that Chinese Ahmedabad scholar chemical plant produces is the A146 resin, / 2nd seconds nitro-cottons are that Luzhou Chemical Plant produces, titanium dioxide is that the trade mark of the commodity of Australian Millennium petrochemical company production is 595, defoamer comprise the trade mark that moral modest chemical company limited in Taiwan produces be DC-5300, Guangzhou China auxiliary agent company to produce the trade mark be HX-2030, flow agent comprises that the trade mark that Dutch EFKA company produces is EFKA-3033, Rhodia ^*The trade mark of producing is HDT-90 (a hexamethylene diisocyanate homopolymer)

Advantage of the present invention and effect:

The mute light white paint of urethane of the present invention after testing and probationary certificate, its coating adhesion is good, intensity is high, the excellent performance of anti-xanthochromia and cracking resistance.

Embodiment

Further specify characteristics of the present invention below by specific embodiment:

Embodiment:

Present embodiment is a preparation mute light white finish paint of the present invention, and it is prepared by following method:

(1) first component

With 23.3kg Oleum Cocois Synolac, 0.2kg Ricinate (A146), 0.5kg pimelinketone, 1.0kg dimethylbenzene, the 25kg595 titanium dioxide adds in the reactor successively, dispersed with stirring, sand milling is to fineness≤25um, and then add successively: 13.5kgA146 Oleum Cocois Synolac, 15.0kg 1/2nd seconds nitro-cottons (25% positive butyl ester), 4.0kg positive butyl ester, 2.0kg15% polyethylene wax slurry, 0.1kg Ricinate, 5.0kg the C805 flatting silica that U.S. W. R. Grace ﹠ Co produces, 0.2kgDC-5300 defoamer, 0.3kgEFKA-3033 flow agent, 2.0kg pimelinketone, 7.5kg dimethylbenzene, 0.4kg positive butyl ester, under the rotating speed of 1200r/min, stirred 25 minutes, to fineness≤25um, transfer viscosity to 5000～6000CPS/25 ℃ with positive butyl ester and promptly get the first component;

(2) 55% dehydration positive butyl ester and 45%HDI-90 is mixed to spare promptly gets component B;

(3) 55% positive butyl ester and 45% dimethylbenzene are mixed obtain third component;

(4) with first: second: make after the third three components are joined lacquer with weight ratio at 1: 0.4: 0.6.

Product performance of the present invention see Table 1, and sample A and B white finish paint performance that the present invention and market are bought relatively see Table 2:

Product of the present invention as seen from Table 1 is a kind of anti-xanthochromia and the good woodenware white finish paint of the feature of environmental protection.

As seen from Table 2, yellowing resistance of the present invention, sticking power, snappiness etc. all are better than known commercial sample.

Table 1

Project	Index	The result
			Paint film color and outward appearance	Smooth smooth, meet aberration	Smooth smooth, meet aberration

First component solids content (%) fineness, the dry surface drying of um first component component B (min) is done solid work (h) adhesive force hardness heat resistance (90 ± 15min) yellowing resistances (being exposed to the sun 7 days) VOC (g/L) benzene (%) toluene+dimethylbenzene (%) free toluene diisocyanate (%)

〉=40≤30≤20 60 24≤3 grades of HB 2 grades≤700≤0.5≤40≤0.5%

2 grades of no significant changes 586 of 55≤25≤10 15 22 1 grades of H do not detect 25.6 and do not detect

Detection method: performance index are with reference to Q/BDSH001-2000, and hazardous and noxious substances content is with reference to GB18581.

Table 2

Project	Product of the present invention	Sample A	Sample B
				Surface drying (min) is done solid work (h) adhesive force pliability heat resistance yellowing resistance (being exposed to the sun month) shock-resistant (Kg, cm)	15 22 1 grade 1 by no xanthochromia 〉=30	15 22 2 grade 3 by serious xanthochromia 15	20 24 2 grade 3 by serious xanthochromia 20

^*Annotate: Rhodia is a multinational enterprise.

Claims (1)

1. the mute light white finish paint of urethane used of a woodenware is characterized in that, it is made up of first, second, the third three components, during construction following first, second, the third three components is joined lacquer in proportion, brushes back seasoning film forming, specifically preparation process:

(1) the first component is the hydroxyl component, and preparation technology is:

With 23.3% Oleum Cocois Synolac, the 0.2%BYK-163 Ricinate, 0.5% pimelinketone, 1.0% dimethylbenzene, 25% Rutile type Titanium Dioxide adds successively, sand milling is to fineness≤25um after the dispersed with stirring, and then add the Synolac of 12.5～14.5% Oleum Cocois successively, 12～1/18%th 2 seconds nitro-cotton liquid (25% butyl ester liquid), 4.0% positive butyl ester, 2.0% polyethylene wax slurry, 0.1% Ricinate, the 5.0%C805 flatting silica, 0.2% defoamer, 0.3% flow agent, 2.0% pimelinketone, 7.5% dimethylbenzene, 0.4% positive butyl ester, dispersed with stirring 15～20min is to fineness≤25um, after viscosity adjustment to 5000～6000CPS/25 ℃ the first component, above-mentioned percentage ratio is 100 in first component raw material weight sum;

(2) preparation technology of component B is:

With 50～60% positive butyl ester of dehydration and 40～50% hexamethylene diisocyanate homopolymer, mixing, it is standby to obtain the component B sealing;

(3) third components are thinner, the dimethylbenzene of 50～60% positive butyl esters and 40～50% is mixed obtain third component;

(4) first, second, the third three components can be used by 1: 0.4～0.6: 0.5～0.6 weight ratio even after-filtration that is mixed.