CN104086711B

CN104086711B - A kind of perfluoroethylene-propylene wax strengthening the smooth performance of coating

Info

Publication number: CN104086711B
Application number: CN201410311964.8A
Authority: CN
Inventors: 王琪宇; 董建国
Original assignee: QUZHOU ZHONGTONG CHEMICAL Co Ltd
Current assignee: QUZHOU ZHONGTONG CHEMICAL Co Ltd
Priority date: 2014-06-26
Filing date: 2014-06-26
Publication date: 2016-08-24
Anticipated expiration: 2034-06-26
Also published as: CN104086711A

Abstract

The invention provides a kind of perfluoroethylene-propylene wax strengthening the smooth performance of coating: in a kettle., squeeze into pure water, polymerization inhibitor, add a certain amount of dispersant, initiator, perfluoroethylene-propylene powder body, N vinyl pyrrolidone, 4,5 difluoros 2,2 two (trifluoromethyl) 1,3 dioxole, maleic anhydride, it is warming up to reaction temperature, question response terminates, centrifugal drying, obtains this patent product.

Description

A kind of perfluoroethylene-propylene wax strengthening the smooth performance of coating

Technical field

The present invention relates to the preparation method of a kind of polymer-wax, a kind of perfluoroethylene strengthening the smooth performance of coating Propylene wax.

Background technology

In the preparation of coating material, typically add wax with 0.01-10% concentration.Be usually PE wax, PTFE wax, PP wax, Amide waxe, FT paraffin, lignite wax, native paraffin, coarse-grain and microcrystalline wax, polyethylene and ethylene copolymers, Isosorbide Dinitrate and metallocene Wax, and their blend equally, add these wax with the form of thin slice, granule, powder, dispersion, emulsion or powder compounds, Conventional type of service is the fine powder powder that granularity is at most 4 μm.Use these waxes with reach in coating material as Lower effect: preferably scratch-resistant, more preferable wearability, the more preferable dispersion of pigment, more preferable pigment stability, sedimentation tendency Improve, the improvement of pigment redispersion, for the activity orientation material of effect pigment, effective delustring, gratifying sense of touch, profit The improvement of slip, the improvement of metal marker, reach effective introducing of effect pigment, the impact of rheological property, more preferable anti Property, more preferable sand milling, the degassing additive in powdery paints, for increasing the additive of powdery paints yield.

CN 1429257 provides wax mixture for improving the purposes of coating material performance, and this wax mixture includes a) logical Cross homopolymer or the copolymer of C2-C18 alpha-olefin prepared by metallocene catalyst, and same from the phase produced by metallocene catalyst Degradation wax to high chain length manufacture of polyolefins, and, as auxiliary agent, one or more are selected from other following wax: b) PE wax, c) PTFE wax, d) PP wax, e) amide waxe, f) FT paraffin, g) lignite wax, h) native paraffin, i) coarse-grain and microcrystalline wax, j) Polar polyolefin Chloroflo, or k) Isosorbide Dinitrate, l) polyamide, m) polyolefin, n) PTFE, o) wetting agent, p) silicate.

Existing known technology all has complicated components, and cost is high, and poor compatibility between high molecular polymer mixes uneven Etc. shortcoming, have impact on the use effect in commercial plant

Summary of the invention

For the deficiencies in the prior art, the invention provides a kind of perfluoroethylene-propylene wax strengthening the smooth performance of coating.

In a kettle., squeeze into pure water, polymerization inhibitor, add a certain amount of dispersant, initiator, perfluoroethylene-propylene powder Body/NVP/4,5-bis-fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole/maleic anhydride, heats up To reaction temperature, question response terminates. and dry closing bag, obtain this patent product.

The present invention provides a kind of perfluoroethylene-propylene wax strengthening the smooth performance of coating, is realized by following steps:

The preparation of step 1. aqueous phase

By weight, 1000 parts of water of interior addition, 0.5-2 part emulsifying agent, stir in a kettle.；

The preparation of step 2. oil phase

By weight, by 100 parts of perfluoroethylene-propylene powder body, 1-5 part NVP, 1-5 part 4,5-bis- Fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole, 5-15 part maleic anhydride monomer mixes, adds 0.2-1 part peroxide Compound initiator, stir.

Step 3. polyreaction

The oil-phase solution prepared in step 2 is added in step 1 equipped with in the reactor preparing aqueous phase, the slowest rear fast Being stirred, then from 70-100 DEG C of reaction 10-15h, reaction terminates rear blowing, and washing microsphere is limpid to water, centrifugal drying, To product.

Described chemical dispersant includes anion emulsifier, for ammonium lauryl sulfate, dodecylbenzene sodium sulfonate, ten The chain alkyl types such as six sodium alkyl benzene sulfonates, B-53, polyoxyethylene alkyl ether sodium sulfate and paraffin sulfonate Any one in anionic emulsifier, perfluoro caprylic acid potassium salt or ammonium salt and the pungent sulfonate sodium of perfluor alkane or ammonium salt.And it is non- Ionic emulsifying agent, for polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkylallyl ether, polyoxyethylene Any one in sorbitan alcohol fatty acid ester, polyoxyethylene sorbitol fatty acid ester, fatty acid glyceride.Preferably ten Six sodium alkyl benzene sulfonates.

The preferred potassium peroxydisulfate of described peroxide initiator, Ammonium persulfate..

Described 4,5-bis-fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole is commercially available prod, such as Shanghai grace fluorine The product that good Science and Technology Ltd. produces；Described NVP is commercially available prod, as above the most special chemical science and technology The product that company limited produces；Described perfluoroethylene-propylene powder body is commercially available prod, as Zhejiang Xingteng Chemical Co., Ltd is raw The product produced.

Beneficial effects of the present invention:

Perfluoroethylene-propylene wax spheroid through 4,5-bis-fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole and N- Vinyl pyrrolidone carries out surface modification, in aqueous or alcohol-soluble (polar solvent system) coating system, and can be significantly Degree improve coating slipping, due to acrylic resin, polyurethane resin, alkyd resin, epoxy resin, vinylite, Nitrocellulose resins etc. can be compatible, it is possible to is widely used in all kinds water paint or alcohol-soluble coating.

Detailed description of the invention

Following example only further illustrate the present invention, are not to limit the scope of protection of the invention.

Embodiment 1

The preparation of step 1. aqueous phase

Add 1000Kg water, 2Kg cetyl benzenesulfonic acid sodium in 2000L reactor, stir.

The preparation of step 2. oil phase

In 500L reactor, by 100Kg perfluoroethylene-propylene powder body, 3Kg NVP, 2Kg4,5-bis- Fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole monomer mixes, adds 0.2Kg Ammonium persulfate., stirs.

Step 3. polyreaction

The oil-phase solution prepared in step 2 is added in step 1 equipped with in the reactor preparing aqueous phase, the slowest rear fast Being stirred, then from 84 DEG C of reaction 10h, reaction terminates rear blowing, and washing microsphere is limpid to water, and centrifugal drying obtains product, Numbered SX-1.

Embodiment 2

The preparation of step 1. aqueous phase

Add 1000Kg water, the pungent sodium sulfonate of 0.5Kg perfluor alkane in 2000L reactor, stir.

The preparation of step 2. oil phase

In 500L reactor, by 100Kg perfluoroethylene-propylene powder body, 1Kg NVP, 1Kg4,5-bis- Fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole monomer mixes, adds 0.05Kg Ammonium persulfate., stirs.

Step 3. polyreaction

The oil-phase solution prepared in step 2 beaker is added in step 1 equipped with in the reactor preparing aqueous phase, the slowest after Fast is stirred, and then from 70 DEG C of reaction 15h, reaction terminates rear blowing, and washing microsphere is limpid to water, and centrifugal drying is produced Product, numbered SX-2.

Embodiment 3

The preparation of step 1. aqueous phase

Add 1000Kg water, 2Kg cetyl benzenesulfonic acid sodium in 2000L reactor, stir.

The preparation of step 2. oil phase

In 500L reactor, by 100Kg perfluoroethylene-propylene powder body, 5Kg NVP, 5Kg4,5-bis- Fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole monomer mixes, adds 1Kg Ammonium persulfate., stirs.

Step 3. polyreaction

The oil-phase solution prepared in step 2 beaker is added in step 1 equipped with in the reactor preparing aqueous phase, the slowest after Fast is stirred, and then from 100 DEG C of reaction 10h, reaction terminates rear blowing, and washing microsphere is limpid to water, and centrifugal drying obtains Product, numbered SX-3.

Comparative example 1

It is added without NVP, the other the same as in Example 1.The numbered SX-4 of products obtained therefrom.

Comparative example 2

It is added without 4,5-bis-fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole, the other the same as in Example 1.Gained produces The numbered SX-5 of product.

Comparative example 3

It is added without 4,5-bis-fluoro-2,2-bis-(trifluoromethyl)-1,3-dioxole, NVP, its It is with embodiment 1.The numbered SX-6 of products obtained therefrom.

Embodiment 4

The micro mist wax that embodiment 1-3 and comparative example 1-3 prepare, the introducing in celluloid Standard Varnish, it is used for disappearing Light and the purpose of slip: by dissolvers, by dispersion, then the NC varnish neutralization of 2wt% micro mist wax introducing 98wt% is used Framework applicator pulls downward on (60 μm wet-film thickness) on glass plate.After drying, gloss is measured.

By means of framework applicator, varnish is coated on glass (at least two plate in each case) (60 μm wet films Thickness).Thereafter plate is stored 24 hours in an oven at 50 DEG C.In the case, by plate place, have coating thereon and Load 500g weight.Thereafter, evaluation adhesion behavior

	Gloss (60 ° of angles)	Slide	Blocking characteristics
				NC varnish is without wax	147	0.45	Sizable
SX-1	36	0.15	Nothing
				SX-2	49	0.22	Nothing

SX-3	21	0.11	Nothing
				SX-4	52	0.28	Trace
SX-5	79	0.31	Trace
				SX-6	92	0.37	One_{A bit}

Claims

1. the perfluoroethylene-propylene wax strengthening the smooth performance of coating, it is characterised in that comprise the following steps:

The preparation of step 1. aqueous phase

The preparation of step 2. oil phase

By weight, by 100 parts of perfluoroethylene-propylene powder body, 1-5 part NVP, 1-5 part 4,5-bis-fluoro-2, 2-bis-(trifluoromethyl)-1,3-dioxole, 5-15 part maleic anhydride monomer mixes, adds 0.2-1 part peroxide Initiator, stir；

Step 3. polyreaction

The oil-phase solution prepared in step 2 is added in step 1 equipped with in the reactor preparing aqueous phase, the slowest after the fastest carrying out Stirring, then from 70-100 DEG C of reaction 10-15h, reaction terminates rear blowing, and washing microsphere is limpid to water, and centrifugal drying is produced Product.