Organometallic catalyst compositions and process for polyurethane manufacture using said catalyst
OwnerBruno Stengel, Neville Slack +1inventors
InventorsBruno Stengel, Neville Slack, Martin Partidge
Life of this patent
Estimating the term…
Abstract
A catalyst composition comprises the reaction product of an alkoxide or condensed alkoxide of titanium, zirconium, hafnium, aluminium, iron (III), or a lanthanide, a 2-hydroxy carboxylic acid, a base and optionally an alcohol containing at least two hydroxyl groups. A process for the manufacture of polyurethane materials using the catalyst is also described.
Claims14
A process for the manufacture of a polyurethane article, comprising the steps of:
- a) forming a mixture by mixing together either
- a compound having more than one hydroxy group which is capable of reacting with an isocyanate group-containing material to form a polyurethane or
- a compound having more than one isocyanate group which is capable of reacting with a hydroxyl group-containing material to form a polyurethane,
- with a catalyst composition comprising the reaction product of:
- i. an alkoxide or condensed alkoxide of titanium, zirconium, hafnium, aluminium, iron (III), or a lanthanide,
- ii. a 2-hydroxy carboxylic acid, and
- iii. a base
- b) adding to said mixture the other of the compound having more than one hydroxyl group which is capable of reacting with an isocyanate group-containing material to form a polyurethane or the compound having more than one isocyanate group which is capable of reacting with a hydroxyl group-containing material to form a polyurethane,
- c) forming said mixture into the required shape for the polyurethane article, and
- d) allowing said mixture to cure
A process as claimed in claim 10, wherein in said catalyst composition, the alcohol is selected from the group consisting of 1,2-ethanediol, 1,2propanediol, 1,3-propanediol, 1,4-butane diol, diethylene glycol and a polyethylene glycol.
A composition comprising:
- a) either
- i) a compound having more than one hydroxy group which is capable of reacting with an isocyanatc group-containing material to form a polyurethane or
- ii) a compound having more than one isocyanate group which is capable of reacting with a hydroxyl group-containing material to form a polyurethane,
- and
- b) a catalyst composition comprising the reaction product of:
- i. an alkoxide or condensed alkoxide of titanium, zirconium, hafnium, aluminium, iron (III), or a lanthanide,
- ii. a 2-hydroxy carboxylic acid, and
- iii. a base
catalyst composition comprising the reaction product of:
- i. an alkoxide or condensed alkoxide of titanium, zirconium, hafnium, aluminium, iron (III), or a lanthanide,.
- ii. a 2-hydroxy carboxylic acid, and iii. a base and
Dependencies are inferred from the claim text.