Organic resin carrying tertiary amine and carboxylic acid groups, and aqueous dispersion comprising same, for a two-component crosslinkable composition
A technology of organic resins, tertiary amine groups, applied in the field of organic resins carrying tertiary amine and carboxylic acid groups for two-component crosslinkable compositions and aqueous dispersions containing them, capable of solving unknown solutions And other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0083] The third subject of the invention relates to a process for the preparation of an aqueous resin dispersion according to the invention comprising the following steps:
[0084] i- preparation of a solution of the resin according to the invention in at least one organic diluent, and preferably in at least one polar organic diluent,
[0085] ii- The carboxylic acid groups of the resin are partially or completely neutralized, preferably by adding an amine, and more preferably by adding a solution of dimethylaminoethanol (DMAE) or triethanolamine (TEOH) without negatively affecting other groups of the resin,
[0086] iii- An aqueous dispersion of the resin is prepared by adding water until the phase inverts, preferably at a temperature ranging from 50°C to 80°C.
[0087] In the method of the present invention, the resin may be an acrylic, vinyl or vinyl-acrylic resin, which includes a styrene-acrylic resin, and in this case step i of preparing the resin-by free radical poly...
Embodiment 1
[0127] Example 1: Preparation of an organic resin according to the invention and an aqueous dispersion comprising said resin The invention has Synthesis of organic resin :
[0128] 180 g of 2-butoxyethanol and 78 g of polypropylene glycol (Mn=1000 g / mol) were introduced into the 2-liter reactor. The reactor was brought to 150°C under a nitrogen purge. Meanwhile, 465 g of styrene, 292.5 g of methyl methacrylate, 213 g of butyl acrylate, 42 g of lauryl methacrylate and 112.5 g of 2-dimethylaminoethyl methacrylate were mixed to form a = Copolymer P1 at 41.2°C. A solution of 33.8 g of di-tert-butyl peroxide (DTBP) and 16.9 g of tert-butyl peroctoate (TBPO) in 50.6 g of 2-butoxyethanol was also prepared. These two formulations were then simultaneously introduced into the reactor at 150°C for a period of 3 hours.
[0129] At the end of these additions, the medium was kept at this temperature for 30 minutes and then cooled to 135°C.
[0130] Simultaneously, 90 g of styrene, 8...
Embodiment 2
[0138] Example 2: Organic resin according to the invention (without 2-dimethylaminomethacrylate in copolymer P2 ethyl ester) and preparation of an aqueous dispersion comprising said resin
[0139] The synthesis of organic resin of the present invention:
[0140] 168 g of 2-butoxyethanol and 72.8 g of polypropylene glycol (Mn=1000) were introduced into the 2-liter reactor. The reactor was then brought to 150°C under a nitrogen purge. At the same time, 420 g of styrene, 266 g of methyl methacrylate, 184.8 g of butyl acrylate, 39.2 g of lauryl methacrylate and 140 g of 2-dimethylaminoethyl methacrylate were mixed to form a = Copolymer P1 at 44.6°C. A solution of 31.5 g of di-tert-butyl peroxide (DTBP) and 15.8 g of tert-butyl peroctoate (TBPO) in 47.25 g of 2-butoxyethanol was also prepared. The two formulations were then simultaneously introduced into the reactor at 150° C. over 3 hours.
[0141] At the end of these additions, the medium was kept at this temperature fo...
PUM
| Property | Measurement | Unit |
|---|---|---|
| glass transition temperature | aaaaa | aaaaa |
| glass transition temperature | aaaaa | aaaaa |
| Brookfield viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More