CN102911547A - Polyether modified polysiloxane leveling agent for paint ink - Google Patents

Abstract

The invention discloses a polyether modified polysiloxane leveling agent for paint ink. The surface tension is 21-24 dynes, the number average molecular weight is 1,500-4,500, the weight average molecular weight is 2,500-5,500, and the polydispersity is 1.1-2.0. According to a product obtained by the invention, the friction coefficient of a paint ink system can be effectively reduced, and the smoothness is improved; 0.03 percent by weight of the product is added into varnish, is uniformly stirred and is filmed on an iron plate, and a friction coefficient instrument tests that the friction coefficient of a paint film is less than or equal to 0.18 mud; the friction coefficient which is tested through control test of the conventional similar import product is 0.196-0.207 mud; and mud is a dynamic friction coefficient, and a lower numeric value shows smoother surface and better handfeel.

Description

Coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent

Technical field

The present invention relates to a kind of coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent, belong to coating and printing ink auxiliary agent technical field.

Background technology

The Siloxane-Oxyalkylene Copolymers flow agent that is used at present coating and printing ink exists frictional coefficient height, the poor shortcoming of feel.

Summary of the invention

The object of the present invention is to provide a kind of coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent that can reduce coating and printing ink system frictional coefficient, improve smooth degree.

Technical solution of the present invention is:

A kind of coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent is characterized in that: surface tension is the 21-24 dyne, and number-average molecular weight is 1500 ~ 4500, and weight-average molecular weight is 2500 ~ 5500, and polymolecularity is 1.1 ~ 2.0.

Described coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent, made through shortening is synthetic by the raw material of following weight percent:

Containing hydrogen silicone oil 35-65%

Polyethers 65-35%;

Described containing hydrogen silicone oil, hydrogen content are 0.05-0.24%, and molecular weight is 900-3000; Polyethers is the copolymerization polyethers of PO and EO, and is alkyl-blocked, and molecular weight is 500-1500, propylene oxide: the ratio of oxyethane is 1 ~ 7:3 ~ 9; The catalyzer of the synthetic usefulness of shortening is Platinic chloride or platinum.

Product of the present invention can effectively reduce coating and printing ink system frictional coefficient, improve smooth degree; In varnish, add this product of 0.03% weight, stir, film to iron plate, with the frictional coefficient of friction coefficient instrument test paint film≤0.18 μ d; Be 0.196-0.207 μ d and will have the frictional coefficient that similar imported product controlled trial records now; μ d is dynamic friction coefficient, and numerical value is lower to illustrate that then the surface is more smooth, and feel is better.

The invention will be further described below in conjunction with embodiment.

Embodiment

With the raw material of following weight percent in the presence of catalyzer routinely the hydrogenation synthetic method carry out hydrogenation synthesizing reaction, make coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent:

Containing hydrogen silicone oil 35-65%(example 35%, 50%, 60%)

Polyethers 65-35%(example 35%, 50%, 60%);

The hydrogen content of described containing hydrogen silicone oil is 0.05-0.24%(example 0.05%, 0.18%, 0.24%), molecular weight is 900-3000(example 1000,2000,3000); Polyethers alkyl-blocked, molecular weight is 500-1500(example 500,1000,1500), propylene oxide: the ratio of oxyethane is 1 ~ 7:3 ~ 9(example 1:2,1:4,1:6); The catalyzer of the synthetic usefulness of shortening is Platinic chloride or platinum.

The coating and printing ink that makes Siloxane-Oxyalkylene Copolymers flow agent, surface tension are the 21-24 dyne, and number-average molecular weight is 1500 ~ 4500, and weight-average molecular weight is 2500 ~ 5500, and polymolecularity is 1.1 ~ 2.0.

The consumption of catalyzer is the 10-30ppm of raw material containing hydrogen silicone oil, polyethers gross weight; The temperature of hydrogenation synthesizing reaction is that 90 ~ 130 ℃, time are 5 ~ 10 hours.

Claims (2)

1. coating and printing ink Siloxane-Oxyalkylene Copolymers flow agent, it is characterized in that: surface tension is the 21-24 dyne, and number-average molecular weight is 1500 ~ 4500, and weight-average molecular weight is 2500 ~ 5500, and polymolecularity is 1.1 ~ 2.0.

2. coating and printing ink according to claim 1 Siloxane-Oxyalkylene Copolymers flow agent is characterized in that: made through shortening is synthetic by the raw material of following weight percent:

Containing hydrogen silicone oil 35-65%

Polyethers 65-35%;

Described containing hydrogen silicone oil, hydrogen content are 0.05-0.24%, and molecular weight is 900-3000; Polyethers is the copolymerization polyethers of PO and EO, and is alkyl-blocked, and molecular weight is 500-1500, propylene oxide: the ratio of oxyethane is 1 ~ 7:3 ~ 9; The catalyzer of the synthetic usefulness of shortening is Platinic chloride or platinum.