Polyisocyanurate foams
AssigneeHuntsman International LLC
InventorAndreas Rothacker
Life of this patent
Estimating the term…
Abstract
The invention provides polyisocyanurate systems for manufacture of polyisocyanurate foam components such as those from SRIM processes. The reaction systems include a polyisocyanate and a polyisocyanate reactive component that includes a trimerization catalyst, polyol, and a carboxylic acid blowing agent, optionally with water as a co-blowing agent. The reaction systems can be blown exclusively with carboxylic acid to produce SRIM products which can be demolded with reduced mold residence time.
Claims25
A reaction system for forming structural reaction injection molded polyisocyanurate foams comprising:
- a reinforcement material, a polyisocyanate component, and a polyisocyanate reactive component including a polyol, blowing agent, and a trimerization catalyst, wherein the blowing agent consists of one or more carboxylic acids and optionally water.
A method for manufacturing foam products by the SRIM process, the improvement wherein the foam is produced from a reaction system comprising:
- a polyisocyanate component, and a polyisocyanate reactive component comprising a polyol, blowing agent, and a trimerization catalyst, wherein the blowing agent consists of one or more carboxylic acids and optionally water.
A reaction system for forming structural reaction injection molded polyisocyanurate foams comprising:
- a reinforcement material;
- polyisocyanate and an isocyanate reactive component comprising,
- a complex fatty polyester that is the reaction product of adipic acid, pentaerythritol and oleic acid,
- an isobutyl ester of oleic acid
- a propoxylated glycerol,
- a triol,
- a polyether modified polysiloxane surfactant,
- a tall oil fatty acid, and
- potassium hydroxide.
Dependencies are inferred from the claim text.