Concentrated solution of poly(furfuryl alcohol) for sizing organic or mineral fibres
AssigneeSaint-Gobain Isover
InventorsPierre Salomon, Boris Jaffrennou
Life of this patent
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Abstract
The present invention relates to an aqueous poly(furfuryl alcohol) solution containing: from 40% to 85% by weight of poly(furfuryl alcohol), from 15% to 60% by weight of water and less than 1.5% by weight of furfuryl alcohol, said solution being characterized in that it exhibits a pH of greater than 7.0, preferably of between 7.2 and 10.0. The invention also relates to a process for the manufacture of a product based on mineral or organic fibers which are bonded by an organic binder, using such an aqueous poly(furfuryl alcohol) solution in the diluted form.
Claims21
A process for manufacturing a product based on mineral or organic fibers which are bonded by an organic binder, said process comprising:
- (a) preparing a binding composition exhibiting a pH of greater than 7 by dilution with water of an aqueous poly(furfuryl alcohol) solution,
- (b) applying the binding composition to mineral or organic fibers,
- (c) forming an assemblage of mineral or organic fibers, wherein stage (b) precedes stage (c), and
- (d) heating the assemblage of mineral or organic fibers until curing of the binding composition,
- wherein the aqueous poly(furfuryl alcohol) solution comprises:
- from 40% to 85% by weight of poly(furfuryl alcohol);
- from 15% to 60% by weight of water;
- and
- less than 1.5% by weight of furfuryl alcohol, and
- wherein the aqueous poly(furfuryl alcohol) solution exhibits a pH of greater than 7.0.
A process for manufacturing a product based on mineral or organic fibers which are bonded by an organic binder, said process comprising:
- (a) preparing a binding composition exhibiting a pH of greater than 7 by dilution with water of an aqueous poly(furfuryl alcohol) solution,
- (b) applying the binding composition to mineral or organic fibers, before or after stage (b),
- (c) forming an assemblage of mineral or organic fibers, and
- (d) heating the assemblage of mineral or organic fibers until curing of the binding composition,
- wherein the aqueous poly(furfuryl alcohol) solution comprises:
- from 40% to 85% by weight of poly(furfuryl alcohol);
- from 15% to 60% by weight of water;
- and
- less than 1.5% by weight of furfuryl alcohol,
- wherein the aqueous poly(furfuryl alcohol) solution exhibits a pH of greater than 7.0, and
- wherein the binding composition exhibits a dry matter content of between 2% and 20% by weight.
A process for manufacturing a product based on mineral fibers which are bonded by an organic binder, said process comprising:
- (a) preparing a binding composition exhibiting a pH of greater than 7 by dilution with water of an aqueous poly(furfuryl alcohol) solution,
- (b) applying the binding composition to mineral fibers, before or after stage (b),
- (c) forming an assemblage of mineral fibers, and
- (d) heating the assemblage of mineral fibers until curing of the binding composition,
- wherein the aqueous poly(furfuryl alcohol) solution comprises:
- from 40% to 85% by weight of poly(furfuryl alcohol);
- from 15% to 60% by weight of water;
- and
- less than 1.5% by weight of furfuryl alcohol, and
- wherein the aqueous poly(furfuryl alcohol) solution exhibits a pH of greater than 7.0, and
- wherein the assemblage of mineral fibers exhibits, after the curing stage (d), a loss on ignition (LOI) of between 1% and 20%.
Dependencies are inferred from the claim text.