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US 6,602,450 B1Granted
Method for producing a thermally insulating plate
AssigneeAsahi Glass Company, Limited
InventorsHisashi Sato, Hiromitsu Takeyasu, Chitoshi Suzuki
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AssigneeAsahi Glass Company, Limited
InventorsHisashi Sato, Hiromitsu Takeyasu, Chitoshi Suzuki
Estimating the term…
A method of producing a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam, which comprises spraying or injecting a foam mix for the rigid synthetic resin foam into the space between the opposed face materials and expanding and curing the foam mix, wherein the foam mix comprises a particular polyol, a polyisocyanate, a foam stabilizer, a catalyst and a blowing agent, wherein the polyol contains a polyether polyol having a hydroxyl value of at most 84 mgKOH/g and an oxyethylene group content of at least 40 wt %; a polyether polyol which is obtained by adding a cyclic ether to an amine compound and has a hydroxyl value of from 250 to 900 mgKOH/g; and fine polymer particles stably dispersed in the polyol.
A method of producing a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam, which comprises spraying or injecting a foam mix for the rigid synthetic resin foam into the space between the opposed face materials and expanding and curing the foam mix, wherein the foam mix comprises the following polyol (V), a polyisocyanate, a foam stabilizer, a catalyst and a blowing agent:
A polyol composition for production of a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam by spraying or injecting a foam mix for the rigid synthetic resin obtained by mixing the polyol composition and a polyisocyanate compound into the space between the two opposed facings and expanding and curing the foam mix, which comprises a polyol (V), a foam stabilizer, a catalyst and blowing agent as essential components, wherein the polyol (V) is a polyol containing the following polyether polyol (X), the following amine-type polyol (Y) and at least 0.01 wt %, based on the total weight of the polyol (V), of fine polymer particles obtained by polymerizing a monomer having at least one polymerizable unsaturated group, stably dispersed in the polyol (V);
Dependencies are inferred from the claim text.