| CN103614005A | 2014-03-05 | |||
| CN104789104A | 2015-07-22 | |||
| CN106833204A | 2017-06-13 | |||
| CN109266133A | 2019-01-25 |
| 9 CLAIMS 1. Process for preparation a chemical formulation, characterized in that it comprises the following steps: - prepare specific quantities of acrylic copolymer substances;- prepare specific quantities of additive dispersants; - and to suitably combine said acrylic copolymer substances with said additive dispersing substances. 2. Process according to claim 1 , characterized in that said acrylic copolymer substances are obtained with a technology called Avanse- Evoque®. 3. Process according to claim 1 or 2, characterized in that said acrylic copolymer substances and said dispersing additives are of high molecular weight (> 30000). 4. Process according to one or more of claims 1 to 3, characterized in that it comprises the further step of adding covering organic polymers in aqueous dispersion to an extent > 5% by weight calculated on the total weight of the said formulation. 5. Process according to one or more of claims 1 to 3, characterized by the fact that it also comprises the further step of introducing silicone resins to 20 an extent > 0.5% by weight calculated on the total weight of said formulation. 6. Process according to one or more of claims 1 to 3, characterized in that it comprises the further step of introducing water-repellent additives based on silanes, or siloxanes, or silicones, or paraffins or similar substances. 7. Process according to one or more of claims 1 to 6, characterized in that it comprises the further step of using carbonates, silicates, talcs, quartz, silicas, barites, dolomite, kaolins, calcined kaolins as fillers. 8. Process according to one or more of claims 1 to 7, characterized in that it comprises the further step of using as thickening agents acyl, urethane, cellulose ether-based thickeners, xanthan gums, hydroxypropyl guar, attapulgites, laponites, polyoxides of ethylene, polyethers. 9. Process according to one or more of claims 1 to 8, characterized in that it comprises the further step of introducing laponite in a 10% aqueous solution to an extent > 0.5% by weight calculated on the weight of said formulation. 10. Use of chemical formulation obatined by process according to one or more of the preceding claims from 1 to 9, for the preparation of water-based substances suitable to be used for carrying out decorative and / or industrial paints or the like. |
Applicant: S.I.R.I S.p.A.
DESCRIPTION
The present invention relates to a process for preparation a chemical formulation.
The invention in object is advantageously used in the chemical industry, in particular for the preparation of water-based substances suitable for being effectively used to carry out decorative and I or industrial or similar paints, to which the following description will make explicit reference without however this lose in generality.
The object of the present invention is to provide an effective process for the preparation of a chemical paint formulation free from carcinogenic components such as for example titanium dioxide.
Another object of the present invention is to provide a process aimed at obtaining a chemical paint formulation with high covering power for both decorative and professional industrial use.
The structural and functional characteristics of the present invention and its advantages with respect to the known prior art will become even more clear and evident from the claims below, and in particular from an examination of the following description, which describes a preferred but not limiting embodiment of the process in object.
The process object of the present invention starts from the use of binding substances such as acrylic copolymers in a technology called Avanse-Evoque® (produced by Dow Chemicals®).
These binder copolymers are currently difficult and complicated to use in many formulations of painting substances, in particular those with high PVC and I or high volume of solids, due to the problems related to the stabilization of the viscosity in the can of the painting products containing these copolymers, as well as the scarce effective opening time that the coating products in question have.
The formulation indications of the manufacturer of such binding copolymers suggest to use polyphosphates or low molecular weight acrylic copolymers (2000-9000) as dispersing agents.
On the other hand, the innovation in question advantageously provides for the use of additive dispersing substances in combination with the aforementioned binding copolymers.
In fact, it has been verified that the use of dispersing agents of various chemical nature with high molecular weight and in particular high molecular weight acrylic copolymers (> 30000) allows to completely solve the problems of stability of viscosity in the jar and of time, open of painting products containing the aforementioned copolymers in Avanse-Evoque® technology.
Therefore, the combination of Avanse-Evoque® polymers and high molecular weight dispersants allows to obtain great formulation flexibility through which it is possible to obtain titanium dioxidefree painting products with a covering power adequate to the demands of the market both for decorative use and for use. industrial.
In the formulations produced it was ascertained that, in addition to the aforementioned combination, the use of covering organic polymers in aqueous dispersion - such as the polymers called Ro- paque® also produced by the Dow Chemicals® company, or the polymers called Celoco®r produced by the Arkema® company - to an extent > 5% by weight calculated on the total weight of the formulation itself, it allows to obtain the desired hiding power properties for the coating product.
It was also ascertained that the introduction in the formulation of silicone resins in an amount > 0.5% by weight calculated on the total weight of the formulation itself and I or the introduction in the formulation of water-repellent additives based on silanes, or siloxanes, or silicones, paraffins or of other nature allows to solve the problems of excessive water absorption of the dry film of the paint products formulated according to the aforementioned criteria.
Carbonates, silicates, talcs, quartzes, silicas, barites, dolomite, kaolins, calcined kaolins were used as fillers.
Acyl, urethane, cellulose ether-based thickeners, xanthan gums, hydroxypropyl guar, attapulgites, laponites, ethylene polyoxides, polyethers have been used as thickening agents.
It has also been ascertained that the introduction in the formulation of laponite in a 10% aqueous solution to an extent > 0.5% by weight calculated on the weight of the formulation itself is necessary in order to improve the open time in particular of the formulations of formulated paint products as described above, intended for decorative use by brush or roller application.
On the basis of the above, formulations of varnishing products have also been developed for use as two-component pigmented primers for wood for industrial, professional or domestic use.
Such two-component primers were catalyzed with isocyanates in a measure of > 1% by weight calculated on the weight of the formulation itself.
Below are some indicative formulations as examples of the innovative work carried out : Formulation 53 One-component Primer
Exp-980 238
AMP-95 1
Comidisp 137 8
Surfinol 104E 3
Dowsil 8603 3
Dorkafill H 57
Zinc Stearate 19
FP-365 95
Omyacarb 5 AV 200
Texanol 10
Khaton LXE 1
Butyldiglycol 24
Wacker BS-45 22
Dowsil IE-6683 19
Acrysol RM-3030 5
Ropaque Ultra E 285
Tegofoamex 902 W 5
BYK-021 3
Acrysol RM-8W 3
Comiwet SWA 24 3
TOTAL 1000 Formulation 54 One-component Primer
Water 99
Maincote 1071 95
AMP-95 1
Comidisp 137 9
Comiwet SWA 24 3
Dowsil 8603 3
Dorkafill H 80
Zinc Stearate 25
FP-365 100
Omyacarb 5 AV 230
Texanol 11
Maincote 1071 85
Khaton LXE 1
Butyldiglycol 23
Wacker BS-4520
Dowsil IE-668320
Acrysol RM-3030 5
Acrysol RM-552
Ropaque Ultra E 180
Tegofoamex 902 W 5
BYK-021 3
Acrysol RM-8W 3
TOTAL 1001 Formulation 11 Two-component primer
Water 125
Maincote 1071 100
TEhtA 2
Comidisp 137 13
Tegofoamex 845 3
Dorkafill H 80
Zinc Stearate 20
FP-365 150
Omyacarb 5 AV 270
Butyldiglycol 20
Khaton LXE 1
Wacker BS-4520
Dowsil IE-668320
Ropaque Dual 150
Tegofoamex 902 W 4
BYK-021 3
Propylene Glycol 10
Acrysol RM-8 I GP 5
Acrysol RM-9986
Comiwet SWA-24 5
TOTAL 1006
Catalyst
Desmodur Ultra 3300 N / MPA 80:2040 Formulation 8 Decorative Painting
Water 101
Natrosol Plus 330 PA 3
AMP-95 0.5
Primal AC-412 140
Policril 434 10
Comidisp 19 4
Surfinol 104E 4
Dowsil 21 OS 2
Tegoairex 902W4
Dorkafill H 110
FP-365 100
Omyacarb 5 AV 197
Socal P2 V 50
Butyldiglycol 10
Tripropylene Glycol 10
Khaton LXE 1
Rep W-75 35
Wacker BS-45 15
Dowsil IE-6683 15
Ropaque Ultra £ 170
Laponite S-482 (10%) 15
BYK-021 3
Acrysol RM-8W 1
1000 Formulation 9 Decorative Painting
Water 96
Natrosol Plus 330 PA 3
AMP-95 0.5
Primal AC-412 140
Policril 434 5
Acumer 1510 10
Comidisp 194
Dowsil 21 OS 2
BYK-011 5
Dorkafill H 110
FP-365 100
Omyacarb 5 AV 190
Socal P2 V 50
Butyldiglycol 15
Tripropylene Glycol 10
Khaton LXE 1
Rep W-75 35
Silsan HSB 15
Dowsil IE-6683 15
Ropaque Ultra E 170
Tegoairex 902W4
Comiwet SWA 244
Acrysol RM-8W 1
Laponite S-482 (10%) 15
TOTAL 1000