CN1182109A - Curing agent modified chlorosulphonated polythene paint and its preparation - Google Patents

Abstract

The anticorrosive paint consists of main component 70-90 wt% and curing agent 10-30 wt%; its main component consists of chlorosulphonated polythene solution, petroleum resin, barium sulfate, BYK dispersant, organic pot clay, methylbenzene and dimethylbenzene; and its curing agent consists of toluene diisocyanate polymer, BYK dispersant and butyl acetate. The said paint has excellent painting property, chemical property and physical property and it is mainly used for painting steel structure operating in harsh conditions of acid, alkali, sea water, chemical atmosphere, water, etc.

Description

A kind of curing agent modified chlorosulfonated polythylene coatings and preparation method thereof

The present invention relates to a kind of heavy duty system, especially the modification chlorosulfonated polyethylene heavy duty system that adopts a kind of novel synthetic resins to make as solidifying agent, be mainly used in require acidproof, alkaline-resisting, sea water resistance, anti-chemical atmosphere, water-fast grade is just carved the application on the metal steel structure surface under the environment.

The domestic existing chlorosulfonated polythylene coatings; the branch that single component and two-pack are arranged; though its performance of single component chlorosulfonated polythylene coatings also possesses acidproof; alkaline-resisting; advantages such as anti-chemical atmosphere; but because the chlorosulfonyl in the chlorosulfonated polyethylene resin is not crosslinked curing; thereby its performance is a greater impact; as: poor adhesive force; the brushing difficulty; the compactness of filming is poor; and it is low to have influence on performances such as its resistant to chemical media; and present domestic two-component coating; its action principle is chlorosulfonyl cross-linking reaction in curing agent component and the chlorosulfonated polyethylene resin and film-forming; therefore; its performance of two-pack chlorosulfonated polythylene coatings of Xing Chenging is as sticking power like this; shock strength; physical and chemical performances such as resistant to chemical media all improve a lot, but the curing agent component in the two-pack chlorosulfonated polythylene coatings is a metal oxide, as magnesium oxide etc.; the two-component coating of Xing Chenging like this; also exist certain shortcoming, as: solidifying agent adds fashionable, and difficulty stirs; coating performance is undesirable, and performances such as resistant to chemical media are not very desirable.

The purpose of this invention is to provide a kind of novel solidifying agent, and make the two-pack chlorosulfonated polythylene coatings of formation, its coating performance, physicals, chemical properties etc. are more superior, in order to overcome the deficiency that present domestic market existing procucts exist, improve performance.

The novel solidifying agent that the present invention adopts, and it is as follows to make the weight percent prescription of coating:

Host: 70-90%

Solidifying agent: 10-30%

Wherein host agent prescription is as follows:

15% chlorosulphonated polyethylene solution 50-60%

Petroleum resin 5-10%

Barium sulfate 5-8%

Color stuffing 3-30%

BYK dispersion agent 3-5%

Organic pottery clay 2-4%

Toluene 2-5%

Dimethylbenzene 3-5%

The prescription of solidifying agent is as follows:

The polymkeric substance 50-60% of tolylene diisocyanate

BYK dispersion agent 15-30%

N-BUTYL ACETATE 15-30%

The preparation technology of above-mentioned coating:

1. the preparation of host

At first get the part chlorosulfonated polyethylene resin and strengthen resin and give in mixed jar in one, use 1200 rev/mins then--1600 rev/mins homogenizer stirs, in whipping process, all add barium sulfate successively, color stuffing, after adding, after restir 20-60 minute, stop to stir, grind with sand mill, after treating that fineness meets the requirements, under the situation of high-speed stirring, add the dispersion agent in the prescription successively again, organic pottery clay and remaining chlorosulphonated polyethylene solution and mixed solvent, viscosimetric is surveyed physical and mechanical properties, and the back packing meets the requirements.

2. the preparation of solidifying agent

Earlier N-BUTYL ACETATE is joined and dissolve in the still, begin to stir, and be warming up to 90, and beginning to reflux, the polymkeric substance with tolylene diisocyanate slowly joins in the reactor then, adding speed is 100-150KG/ hour, add the back and keep sampling survey solids content after 1 hour, viscosity, color, after meeting the requirements, get the pot packing.

3. the preparation of coating

After host and solidifying agent must mix in proportion, used up at 8 hours.

Coating of the present invention is compared as the coating of solidifying agent with the employing oxide compound, and the most tangible advantage is: (1) sticking power is brought up to one-level (drawing the circle method) by original secondary.(2) water-fast, salt spray resistance, humidity resistance improves.(3) resistant to chemical media raising, as: anti-20% sulfuric acid, 20% sodium hydroxide was brought up to 12 months by original 8 months.

The present invention can be realized by following example:

Example 1

The preparation of coating

Host 70%

Solidifying agent 30%

Wherein host agent prescription is as follows:

15% chlorosulfonated polyethylene 50%

Petroleum resin 5%

Barium sulfate 7%

Color stuffing 25%

BYK dispersion agent 5%

Organic pottery clay 3%

Toluene 2%

Dimethylbenzene 3%

A part of chlorosulphonated polyethylene solution and enhancing resin, join to give and mix in the jar, under the situation of high-speed stirring, add the barium sulfate of formula ratio, color stuffing, enter sand milling after 30 minutes and grind, after fineness meets the requirements, add other material and remaining chlorosulphonated polyethylene solution in the formula ratio more while stirring, viscosimetric, transfer color, survey physical and mechanical properties, the back packing meets the requirements.

The prescription of solidifying agent is as follows:

The polymkeric substance 60% of tolylene diisocyanate

BYK dispersing auxiliary 20%

N-BUTYL ACETATE 20%

Earlier N-BUTYL ACETATE is joined and dissolve in the still, begin to stir and be warming up to 90 ℃, begin to reflux, the polymkeric substance with tolylene diisocyanate joins in the still at leisure then, adding speed is 100KG/ hour, and then with 15KG/ hour speed, dispersing auxiliary is joined in the reactor, kept then 1 hour, solids content is surveyed in sampling, viscosity, color, qualified back packing.

The prescription of coating: example 2 examples 3

Host 80% 90%

Solidifying agent 20% 10%

The prescription of host:

15% chlorosulfonated polyethylene liquid 60% 55%

Petroleum resin 10% 5%

Barium sulfate 5% 8%

Color stuffing 10% 15%

BYK dispersing auxiliary 3% 4%

Toluene 4% 5%

Dimethylbenzene 6% 5%

The prescription of solidifying agent:

The polymkeric substance of tolylene diisocyanate 50% 55%

BYK dispersion agent 20% 30%

N-BUTYL ACETATE 30% 15%

More than two examples all by example 1 described prepared.

Claims (2)

1, a kind of curing agent modified chlorosulfonated polythylene coatings, its weight percent prescription is as follows:

Host: 70-90%

Solidifying agent: 10-30%

Wherein host agent prescription is as follows:

15% chlorosulphonated polyethylene solution 50-60%

Petroleum resin 5-10%

Barium sulfate 5-8%

Color stuffing 3-30%

BYK dispersion agent 3-5%

Organic pottery clay 2-4%

Toluene 2-5%

Dimethylbenzene 3-5%

The prescription of solidifying agent is as follows:

The polymkeric substance 50-60% of tolylene diisocyanate

BYK dispersion agent 15-30%

N-BUTYL ACETATE 15-30%

2, the preparation technology of the described coating of a kind of claim 1, its step is as follows:

(1). the preparation of host

At first get the part chlorosulfonated polyethylene resin and strengthen resin and give in mixed jar in one, use 1200 rev/mins then--1600 rev/mins homogenizer stirs, in whipping process, all add barium sulfate successively, color stuffing, after adding, after restir 20-60 minute, stop to stir, grind with sand mill, after treating that fineness meets the requirements, under the situation of high-speed stirring, add the dispersion agent in the prescription successively again, organic pottery clay and remaining chlorosulphonated polyethylene solution and mixed solvent, viscosimetric is surveyed physical and mechanical properties, and the back packing meets the requirements.

(2). the preparation of solidifying agent

Earlier N-BUTYL ACETATE is joined and dissolve in the still, begin to stir, and be warming up to 90, and beginning to reflux, the polymkeric substance with tolylene diisocyanate slowly joins in the reactor then, adding speed is 100-150KG/ hour, add the back and keep sampling survey solids content after 1 hour, viscosity, color, after meeting the requirements, get the pot packing.

(3). the preparation of coating

After host and solidifying agent must mix in proportion, used up at 8 hours.