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AssigneeClariant GmbH
InventorsGerhard Crass, Uwe Falk, Bela Ivan, Gabor Erdodi, Arpad Mathe
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The invention relates to polymers consisting essentially of structural units of the formula (1) 1 in which R1 is a C1-C4-alkylene group R2, R3 independently of one another, are a C8-C12-alkyl or alkenyl group R4 is methyl or ethyl R5 is hydrogen or methyl and whose molecular weight is between 1000 and 100,000 g/mol, to intermediates for their preparation, to a process for their preparation, and to their use as biocidal coating composition for surfaces and textiles.
The use of polymers of the formula 1
A process for the preparation of polymers of the formula 1 by reacting polymers of the formula 2 with a methylating or ethylating agent.
A process for the preparation of polymers of the formula 1 by transesterifying a (meth)acrylic alkyl ester, preferably a methyl ester, with a compound of the formula 3 to give the corresponding (meth)acrylic ester, then alkylating this transesterified product with a methylating or ethylating agent to give the quaternary ammonium compound, and subjecting this quaternary ammonium compound to free-radical polymerization.
A polymer consisting essentially of structural units of the formula (1)
A polymer consisting essentially of structural units of the formula (2)
Dependencies are inferred from the claim text.
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Homopolymers or copolymers of esters: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
Amines; Quaternary ammonium compounds: quaternary ammonium compounds
Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to…:…
The carbon skeleton being acyclic and saturated: having at least one of the hydroxy groups esterified by a carboxylic acid having the esterifying…
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Polymers with biocidal action, process for their preparation and their use
The present invention relates to polymers of N,N,N-trialkylammoniumalkyl (meth)acrylates, to a process for their preparation and to their use for the biocidal finishing of surfaces or textiles.
For various reasons it may be necessary to give hard surfaces or textiles a biocidal finishing. This is intended to prevent microorganisms from being able to settle on said substrates and, more particularly, without repeated disinfection thereof using biocidal compositions.
A) Transesterification of Methyl Methacrylate (MMA) with Didecylaminoethanol (DDAE)
For the transesterification of MMA with DDAE, these substances were mixed with a catalyst and reacted at elevated temperature and reduced pressure. During the reaction, the methanol which forms was distilled off. The influence of the catalyst on the yield of the transesterification reaction is shown below (Table 1) 1 TABLE 1 Transesterification of MMA with DDAE Example Catalyst Yield, % 1 Al(iPrO)3 ˜0 2 Ti(PrO)4 ˜0 3 K2CO3 12 4 K2CO3 4 5 K2CO3 4 6 Ca(OH)2 6 7 LiAIH4 50 8 Dibutyltin maleate (DBTM) 65 9 DBTM 51 10 DBTM 85 11 DBTM 57 12 DBTM 60 13 Sn(Bu)4 2 14 Sn(Bu)4 0 15 K2CO3 (powder) 2 16 K2CO3 (powder) + PEG 4 17 KOH 5 18 Ca(OH)2 1 19 NaOH + PEG 35 20 NaOH 36 21 NaOCH3 ˜0 22 Li2CO3 3 23 LiOH 66 24 LiOH + PEG 68 25 LiOH 65 26 LiOH 72 27 LiOH 62 28 LiOH 68 29 LiOH 58 30 LiOH 55 31 LiOH 51 32 LiOH 62
B) Transesterification of Polymethyl Methacrylate (PMMA) with DDAE