Organic infrared attenuation agents
AssigneeOwens Corning Intellectual Capital, LLC
InventorsNikoi Annan, Yadollah Delaviz, Xiangmin Han, Roland Loh
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Abstract
Organic infrared attenuation agents have been developed to improve the thermal insulation properties of polymeric foams such as polystyrene low density foams. The organic infrared attenuation agents can include polyols such as sorbitol, maltitol, and poly(ethylene glycol), polysaccharides such as starch or cellulose, and infrared attenuation polyesters such as polybutylene terephthalate. The organic attenuation agents include aromatic compounds or carbon oxygen bonds that are effective in absorbing infrared radiation at the desired wavelengths.
Claims17
An extruded polystyrene foam formed from a composition comprising:
- an alkenyl aromatic polymer material comprising polystyrene;
- a blowing agent comprising one or more hydrofluoroolefins (HFOs);
- and
- from 0.1 to 10 wt. % of an organic infrared attenuation agent having an oxygen to carbon molar ratio from 1:1 to 1:2,
- wherein the extruded polystyrene foam has an R value from 3 to 6 F·ft2·hr/BTU.
An extruded polystyrene foam board formed from a composition comprising:
- an alkenyl aromatic polymer material comprising polystyrene;
- a blowing agent comprising one or more hydrofluoroolefins (HFOs);
- from 0.1 to 10 wt. % of an organic infrared attenuation agent comprising one or more of:
- a polyol selected from the group consisting of sugar alcohols and polymeric polyols,
- a carbohydrate,
- recycled paint, and
- coal tar pitch,
- wherein the extruded polystyrene foam board has an R value from 3 to 6 F·ft2·hr/BTU.
Dependencies are inferred from the claim text.