Paint composition containing modified tung oil and preparation method thereof

A tung oil, modified technology, applied in the direction of coating, etc., can solve the problems of poor compatibility, insufficient bonding strength of cured coating, and affecting the application of coatings

CN104017457AActive Publication Date: 2014-09-03ZHUZHOU FEILU ADVANCED MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-09-03

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Abstract

The invention discloses a modified tung oil-acrylate copolymer emulsion which is prepared by carrying out free radical emulsion polymerization reaction on modified tung oil, acrylate monomer, styrene and crosslinking monomer as monomer components and adding a diamidohydrazine or polyhydrazide crosslinking agent, wherein the modified tung oil is an addition reaction product prepared from tung oil and an alkene unsaturated surfactant with the molecular weight of 100-500 in a weight ratio of 100:(50-150). The invention also discloses a paint composition using the emulsion. The paint composition can be used for coating metals and plastics.
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Description

technical field

[0001] The invention relates to a water-based paint composition containing modified tung oil, a preparation method thereof, and its use as a paint for railway wagons. Background technique

[0002] There are numerous documents in the prior art disclosing coating compositions employing tung oil or tung oil derivatives. Such as tung oil modified unsaturated polyester resin, tung oil modified phenolic epoxy resin, tung oil modified waterproof coating, acrylic polyurethane modified tung oil imide adduct, tung oil modified insulating paint, tung oil based polyurethane resin, containing horse A coating composition of anhydride-modified tung oil.

[0003] Chinese patent publication CN103614059A discloses a preparation method of water-based tung oil / acrylic resin insulating varnish. First, 100 parts by mass of tung oil and 30 parts by mass of maleic anhydride are reacted at 130-150° C. for 1-1.5 hours under nitrogen protection to obtain poly Ester liquid; then add a...

Examples

preparation example 1－

[0077] Preparation Example 1 - Preparation of Modified Tung Oil 1:

[0078] Refined tung oil (glyceride content 71wt%) and sodium maleic anhydride derivative sulfonate (sodium maleic anhydride derivative sulfonate, product name M12) were reacted at 140°C for 2 hours under nitrogen protection in a weight ratio of 100:70 to obtain addition Reaction product - modified tung oil 1.

preparation example 2－

[0079] Preparation Example 2 - Preparation of Modified Tung Oil 2:

[0080] Refine tung oil and 2-methyl-2-propene-1-sodium sulfonate (sodium2-methyl-2-propene-1-sulfonate (SMS)) according to the weight ratio of 100:80 under nitrogen protection at 150 ° C for 1.5 hours , to obtain the addition reaction product-modified tung oil 2.

preparation example 3－

[0081] Preparation Example 3 - Preparation of Modified Tung Oil 3:

[0082] Refined tung oil reacted with sodium allyl hydroxyalkyl sulfonate (SAHS) at a weight ratio of 100:80 at 140°C for 2 hours under nitrogen protection to obtain the addition reaction product - modified tung oil 3.

[0083] The auxiliary agent used in embodiment 1-3:

[0084] Ecosurf TM LF-45 surfactant: defoaming and wetting surfactant, without sulfonate group, produced by The Dow Chemical in the United States; name: Secondary Alcohol Alkoxylate (Secondary Alcohol Alkoxylate); main physical properties : Cloud Point (Cloud Point): 40-49; HLB: 12-13; Surface Tension: 31.5 Dynes, Pour Point: 6°C, Foam Height: 120 / 10; THYON SR-675: Waterborne solid acrylic resin, acid value 215, weight average molecular weight 9000, Tg 109°C, produced by Argentina DIRANSA Company;

[0085] COPS-1: reactive emulsifier, the registered trademark is Sipomer COPS-1, produced by Rhodia Company (English name: 1-Na, 1-allyloxy-2-...