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US 2014/0275308 A1Published application
Polymer foam having an elevated maximum service temperature
AssigneeOwens Corning Intellectual Capital, LLC
InventorsNikoi Annan, Gary Milosovich, Yadollah Delaviz, Xiangmin Han
Life of this patent
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Abstract
Polymer foams incorporating fibrous ingredients are disclosed. The fibrous ingredients act as service temperature enhancing agents, increasing the maximum service temperature of the polymer foams as compared to comparable polymer foams that do not incorporate fibrous ingredients. Particularly useful fibrous ingredients include glass fibers and polyaramides having a branched fibrous structure, an example of which is poly para-phenyleneterephthalamide pulp.
Claims17
A rigid, closed cell polymeric foam comprising:
- about 70 to about 96% by weight foamable polymer;
- about 2 to about 12% by weight of at least one blowing agent;
- and
- 0.01 to 10% by weight polyaramid having a branched fibrous structure;
- wherein the polyaramid having a branched fibrous structure is dispersed throughout the rigid, closed cell polymeric foam;
- wherein the blowing agent is selected from hydrofluorocarbons, hydrofluoroolefins, C1 to C9 aliphatic hydrocarbons, C1 to C4 aliphatic alcohols, carbon dioxide, acetone, natural gases, water, ketones, ethers, methyl formate, hydrogen peroxide and combinations thereof;
- and
- wherein said rigid, closed cell polymeric foam maintains dimensional stability such that the polymeric foam expands no more than 1% in any direction upon exposure to a temperature of at least about 180° F. for 1 hour.
5 more elements
A rigid, closed cell polymeric foam insulation board comprising:
- about 70 to about 96% by weight polystyrene;
- about 2 to about 12% by weight of at least one blowing agent;
- and
- about 0.01 to about 10% by weight polyaramid having a branched fibrous structure;
- wherein the polyaramid is dispersed throughout the rigid, closed cell polymeric foam insulation board;
- wherein the blowing agent is selected from hydrofluorocarbons, hydrofluoroolefins, C1 to C9 aliphatic hydrocarbons, C1 to C4 aliphatic alcohols, carbon dioxide, acetone, natural gases, air, water, ketones, ethers, methyl formate, hydrogen peroxide and combinations thereof;
- and
- wherein said rigid, closed cell polymeric foam insulation board maintains dimensional stability such that the polymeric foam expands no more than 1% in any direction upon exposure to a temperature of at least about 180° F. for 1 hour.
5 more elements
A rigid, closed cell polymeric foam comprising:
- about 60 to about 75% by weight polystyrene;
- about 2 to about 12% by weight of at least one blowing agent;
- and
- about 15 to about 25% by weight glass fibers;
- wherein the glass fibers are dispersed throughout the rigid, closed cell polymeric foam;
- wherein the blowing agent is selected from hydrofluorocarbons, hydrofluoroolefins, C1 to C9 aliphatic hydrocarbons, C1 to C4 aliphatic alcohols, carbon dioxide, acetone, natural gases, air, water, ketones, ethers, methyl formate, hydrogen peroxide and combinations thereof;
- and
- wherein said rigid, closed cell polymeric foam insulation board maintains dimensional stability such that the polymeric foam expands no more than 1% in any direction upon exposure to a temperature of at least about 180° F. for 1 hour.
5 more elements
A rigid, closed cell polymeric foam comprising:
- polystyrene;
- about 2 to about 12% by weight of at least one blowing agent;
- and
- at least one service temperature enhancing agent;
- wherein the at least one service temperature enhancing agent is dispersed throughout the rigid, closed cell polymeric foam;
- wherein the blowing agent is selected from hydrofluorocarbons, hydrofluoroolefins, C1 to C9 aliphatic hydrocarbons, C1 to C4 aliphatic alcohols, carbon dioxide, acetone, natural gases, water, ketones, ethers, methyl formate, hydrogen peroxide and combinations thereof;
- and
- wherein said rigid, closed cell polymeric foam maintains dimensional stability such that the polymeric foam expands no more than 1% in any direction upon exposure to a temperature of greater than 180° F. for 1 hour.
5 more elements
A rigid polymeric foam comprising:
- a foamable polymer;
- about 2 to about 12% by weight of at least one blowing agent;
- and
- at least one service temperature enhancing agent;
- wherein the at least one service temperature enhancing agent is dispersed throughout the rigid polymeric foam;
- wherein the blowing agent is selected from hydrofluorocarbons, hydrofluoroolefins, C1 to C9 aliphatic hydrocarbons, C1 to C4 aliphatic alcohols, carbon dioxide, acetone, natural gases, water, ketones, ethers, methyl formate, hydrogen peroxide and combinations thereof;
- and
- wherein said rigid polymeric foam maintains dimensional stability such that the polymeric foam expands no more than 1% in any direction upon exposure to a temperature of greater than 180° F. for 1 hour.
5 more elements
Dependencies are inferred from the claim text.