Akzo N.v.

Alzo N.v.

Tamme Bartels

Gerardus J Maters

Arie Noomen

Wincenty Lambertus Pilaszek

Paul M Vandevoorde

Winsenty L Pilaszek

The present invention pertains to a crosslinkable binder resin comprising an acrylate copolymer backbone having as pendant groups water soluble half esters of dicarboxylic acid and crosslinkable olefinic groups which contain an activated ethylenic unsaturation, such as (meth)acryloyl groups. The (meth)acryloyl groups can be crosslinked by polyfunctional crosslinking agents such as amino or blocked amino crosslinkers. The water-soluble half esters preferably are formed by the reaction of pendant hydroxy groups with unsaturated cyclic anhydrides (the unsaturation providing an additional crosslinking site). The (meth)acryloyl groups preferably are formed by the reaction of pendant epoxy groups with (meth)acrylic acid or derivatives thereof.

Water-dilutable, crosslinkable binder resin

A low-temperature curable composition is provided which is based upon a polyaromatic aldehyde group-containing compound and a ketiminized polyamino compound. These compositions display good stability, extended potlife, and a good balance of physical and mechanical properties making them suitable for a wide variety of coating, impregnating, sealing and bonding application.

Low-temperature curable compositions based upon polyaromatic aldehyde

The invention pertains to a colorless ketimine or an adduct thereof displaying excellent color stability and usable as a cross-linking agent in a curable coating, impregnating, sealing or bonding composition wherein the ketimine is the adduct of a polyamine having a primary and a secondary amino group and containing at least 3 carbon atoms in a linear chain between both amino groups, and a ketone containing not more than 8 carbon atoms and having methylene groups adjacent to the carbonyl group. The invention also pertains to a process for preparing the ketimine and to the use of the ketimine in a curable composition.

Colorless ketimines their preparation and their use as cross-linking

The invention provides a liquid coating composition curable at ambient temperature comprising a compound having at least 2 acryloyl groups or methacryloyl groups and an amino compound having a primary amino group which is blocked with an aldehyde or ketone, said amino compound being an aliphatic or cycloaliphatic amine containing 2-24 carbon atoms or an adduct of a molecular weight of 300-1500 of an epoxy compound or isocyanate compound or .alpha.,.beta.-ethylenically unsaturated carbonyl compound and a primary amine having a group reacting with said epoxy compound or isocyanate compound or .alpha., .beta.-ethylenically unsaturated carbonyl compound. A process for coating a substrate with such composition is also provided.

Liquid coating composition of (meth)acryloyl compound and blocked

A liquid coating composition is provided which comprises, as a binder, an addition polymer containing on average 2 or more pendant activated unsaturated groups and, as a crosslinking agent, a compound containing on average 2 or more primary amino groups. The pendant activated unsaturated groups of the addition polymer are based upon fumaric, maleic and/or itaconic acid and/or anhydrides thereof. The liquid coating compositions of the present invention provide the particular advantage of rapid cure at ambient temperatures.

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Vaassen, Netherlands

Tamme Bartels