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Polyurethane matt woodenware paint

A wood coating and polyurethane technology, applied in the field of coatings, can solve problems such as poor mechanical properties, and achieve the effects of high mechanical properties, good yellowing resistance, and improved toughness

Inactive Publication Date: 2012-03-21
NIPPON PAINT CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of poor mechanical properties of existing wood coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: the preparation of polyurethane matte wood coating

[0029] 1. Preparation of paint main agent component (referred to as component A):

[0030] In a 500ml tin can, add 50g of short oil soybean oil alkyd resin (R-134) (65% solid content), 25g of medium oil castor oil alkyd resin (AL 3402) (60% solid content), Modifier vinyl resin (20%SB-A) 10g (solid content 20%), butyl acetate solvent 3.8g, anti-settling agent 6900-20X (20%) 3g, then add polyurethane dispersant (EFKA4010) 0.4 g, modified polysiloxane defoamer (BYK-066N) 0.6g, polyether modified polydimethylsiloxane leveling agent (BYK-306) 0.6g, polyether siloxane leveling agent ( 10% TEGO450) 0.6g, add polyethylene wax (1400SF) 1g, matting powder (C-906) 5g, the above materials are stirred at 2000r / m for 20min, and dispersed to a fineness ≤ 25um.

[0031] 2. Preparation of polyurethane curing agent component (referred to as component B):

[0032] In a 500ml tin can, first add 10g of solvent butyl ac...

Embodiment 2

[0037] Embodiment two: the preparation of polyurethane matte wood coating

[0038] 1. Preparation of paint main agent component (referred to as component A):

[0039] In a 500ml tin can, add 60g of short oil soybean oil alkyd resin (R-134) (65% solid content), 15g of medium oil castor oil alkyd resin (AL 3402) (60% solid content), Modifier vinyl resin (20%SB-A) 10g (solid content 20%), butyl acetate solvent 6.4g, anti-settling agent 6900-20X (20%) 3g, then add polyurethane dispersant (EFKA4010) 0.5 g, modified polysiloxane defoamer (BYK-066N) 0.6g, polyether modified polydimethylsiloxane leveling agent (BYK-306) 0.6g, polyether siloxane leveling agent ( 10% TEGO450) 0.6g, add polyethylene wax (1400SF) 0.3g, matting powder (C-906) 3g, the above materials are stirred at 2000r / m for 20min, and dispersed to a fineness of ≤25um.

[0040] 2. Preparation of polyurethane curing agent component (referred to as component B):

[0041] In a 500ml tin can, first add 12.5g of solvent b...

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PUM

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Abstract

The invention discloses polyurethane matt woodenware paint. The polyurethane matt woodenware paint comprises a paint main agent component, a polyurethane curing agent component and a diluent component, wherein a weight ratio of the paint main agent component to the polyurethane curing agent component to the diluent component is 1: 0.5: 0.6. The paint main agent component comprises: by weight, 32.5 to 39 % of short-oil soybean oil alkyd resin, 9 to 15% of medium-oil castor oil alkyd resin, 2% of vinyl chloride-vinyl acetate copolymer, 3 to 5% of flatting powder and 0.3 to 1.0% of polyethylene wax. The polyurethane curing agent component comprises: by weight, 30 to 40% of toluene diisocyanate trimer and the balance an addition product of toluene diisocyanate and trimethylol propane. The diluent component comprises: by weight, 70 to 80% of butyl acetate, 10 to 20% of propylene glycol monomethyl ether propionate and 10 to 15% of propylene glycol monoethyl ether acetate. The polyurethane matt woodenware paint has the advantages of good brush coating levelability, good mechanical properties, and environmentally friendly and health characteristics.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to polyurethane matt wood coatings. Background technique [0002] As we all know, the leveling of the surface of the object is closely related to the composition of the paint during the brushing operation of the decorative wood paint. In order for the coating to form a smooth and flat surface, two conditions must be met: one is the presence of a resin with a relatively long oil content in the coating component, and the other is the solvent release of the resin during the drying process of the coating film. If one of these conditions cannot be met or not fully met, then brush leveling is difficult. [0003] Solvent-based wood coatings use solvents as diluents. During the drying or curing process, the solvent volatilizes and the coating film still has considerable volume shrinkage, which will cause unevenness in the drying process of the wood coatings. In fact, the resin in its formula is th...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D175/14C09D7/12
Inventor 兰发林赵华云
Owner NIPPON PAINT CHENGDU
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