Rheology control additive compositions
The present invention relates to additive compositions for controlling rheology and mechanical properties that can be used in polymerizable compositions, sealants, paints or else adhesives. These compositions provide an improvement in the control of the rheology; they have in particular a viscosity and a yield stress which can be adjusted. Owing to the nature of the constituents therein, they provide reinforcement of the mechanical properties of the formulations containing them.
1 . A mass composition comprising the following mixture C:
at least one block copolymer in proportions of between 50% and 99%;
hydrogenated castor oil in proportions of between 0.5% and 25%;
at least one fatty acid diamide and/or at least one fatty acid triamide in proportions of between 0.5% and 25%;
the % being expressed in mass form for the total of mass C.
2 . The composition as claimed in claim 1 , further comprising a mixture M of at least one monomer in proportions by mass of C of between 1% and 40% relative to the mass M+C.
3 . The composition as claimed in claim 2 , further comprising an initiator in proportions by mass of between 0.1% and 5% of the mass M.
4 . The composition as claimed in claim 3 , wherein the initiator is a radical initiator.
5 . The composition as claimed in claim 4 , wherein the initiator is a radical initiator is of a photoinitiator type.
6 . The composition as claimed in claim 3 , wherein the initiator is a cationic initiator of a photoinitiator type.
7 . The composition as claimed in claim 2 , further comprising one or more fillers D in proportions by mass D of between 5% and 80% of the charge C+M+D.
8 . The composition as claimed in claim 7 , wherein the fillers are inorganic.
9 . The composition as claimed in claim 7 , wherein the fillers are organic.
10 . The composition as claimed in claim 7 , wherein the fillers are a combination of inorganic fillers and fillers resulting from a process of recycling textile materials or recycling thermosetting polymeric compositions, or else recycling composite materials.
11 . The composition as claimed in claim 7 , wherein the fillers are glass beads.
12 . The composition as claimed in claim 2 , wherein M consists of a combination of monofunctional and polyfunctional monomers in respective mass ratios varying from 4/1 to 1/4.
13 . The composition as claimed in claim 12 , wherein the monofunctional monomers are selected from the group consisting of styrene, methyl, ethyl, butyl and isobornyl (meth)acrylates and vinyl ethers and the polyfunctional monomers are chosen from dipentaerythritol hexaacrylate, trimethylpropane triacrylate, 1,6-hexanediol diacrylate, pentaerythritol triacrylate, tripropylene glycol diacrylate, triethylene glycol dimethacrylate, ethylene glycol dimethacrylate, ethylene glycol diacrylate, 1,10 decanediol di(meth)acrylate, polyethylene glycol (meth)acrylates, polyfunctional (meth)acrylates from renewable resources, such as vegetable oil (meth)acrylates, and vinyl ethers.
14 . The composition as claimed in claim 1 , wherein the at least one block copolymer is selected from the group consisting of di-blocks or tri-blocks, alone or in combinations, consisting of A blocks having a Tg of greater than 25° C., and B blocks having a Tg of less than 0° C., linear or star-shaped, of formula (A) n B or (B) n A, where n takes the values of 2 or 3.
15 . The composition as claimed in claim 1 , wherein:
the at least one fatty acid diamide comprises at least one reaction product obtained from a reaction mixture comprising:
a) at least one diamine, the diamine being chosen from a C 2 to C 24 and preferably C 2 to C 10 aliphatic diamine, a C 6 to C 18 and preferably C 6 to C 12 cycloaliphatic diamine, a C 6 to C 24 and preferably C 6 to C 12 aromatic diamine, a C 7 to C 24 arylaliphatic diamine, and mixtures thereof;
b) at least one carboxylic acid, the carboxylic acid being a C 2 to C 36 carboxylic acid,
the at least one fatty acid triamide comprises at least one reaction product obtained from a reaction mixture comprising:
a) at least one triamine, selected from the group consisting of a C2 to C24 aliphatic triamine, a C6 to C18 cycloaliphatic triamine, a C6 to C24 aromatic triamine, a C7 to C24 arylaliphatic triamine, a polyether triamine, and mixtures thereof;
b) at least one carboxylic acid, the carboxylic acid being a C 2 to C 36 carboxylic acid.
16 . The composition as claimed in claim 2 , which wherein the composition is in activated form.
17 . Use of the composition as claimed in claim 1 as an organogelator in a formulation of monomers, sealants, adhesives or paints.
18 . Use of a composition as claimed in claim 3 in a process of 3D printing, injection, extrusion, molding or impregnation of composites.
19 . A 3D printing process using a composition as claimed in claim 3 .
20 . An object obtained with the aid of the use as claimed in claim 18 .