Akzo N.v.

Akzona Incorporated

Vincent Oakes

Ronald E Hutton

Joseph W Burley

Stephanus A De Graaf

Willem J Mijs

Hermannus J Sinnige

Hendrik J Hageman

Brian Rodney Iles

Novel triazine derivatives which are with cyanoacetic acid, derivatives of cyanoacetic acid or malodinitrile substituted s-triazines and which provide stabilizers against ultraviolet radiation for organic polymers such as polyvinyl chloride or copolymers of polyvinyl chloride or polypropylene are obtained by reacting the corresponding chloro-s-triazinyl derivatives with sodium hydride or a metal lower alcoholate in an organic solvent, and isolating the resulting product by acidification.

Triazine derivatives

A stabilizer composition for a polymer is described, said composition comprising a chemically combined structure of the formula ##STR1## wherein R is a group having the formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently a hydrogen atom, or an alkyl or substituted alkyl group having 1 to 18 carbon atoms, with the proviso that at least one of R.sup.1 and R.sup.2 contains adjacent to the group HC- a carbonyl group which forms a part of an acid group, ester group, acid halide group, ketone group or aldehyde group; and X is --S(CH.sub.2).sub.y --COOR.sup.5 or --S(CH.sub.2).sub.y --OCOR.sup.5, wherein y is 1 or 2, or --SR.sup.5, --OCOR.sup.5 or --OCOCH.dbd.CHCOOR.sup.5, R.sup.5 being an alkyl or substituted alkyl group having 1 to 18 carbon atoms.

Novel organotin stabilizer compositions

A stabilizer composition for polyvinyl polymers contains

Novel organotin stabilizer compositions and polyvinyl resins stabilized

Organotin trihalides are prepared by reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are an alkyl group, an oxygen-containing hydrocarbon group or a hydrogen atom and at least one of the groups contains a carbonyl group adjacent to the carbon-carbon double bond. The resulting product may be converted into organotin stabilizers for polyvinyl chloride and other polymers.

Process for the preparation of organotin trihalides

Organotin stabilizers

Improved heat stability of halogen containing polymers is obtained by applying as stabilizer a synergistic mixture of

Growing community of inventors

St. Helens, United Kingdom

Vincent Oakes