Fibrous insulation products have an aqueous binder composition that includes a carbohydrate and a crosslinking agent. In exemplary embodiments, the carbohydrate-based binder composition may also include a catalyst, a coupling agent, a process aid, a crosslinking density enhancer, an extender, a mois
Fibrous insulation products have an aqueous binder composition that includes a carbohydrate and a crosslinking agent. In exemplary embodiments, the carbohydrate-based binder composition may also include a catalyst, a coupling agent, a process aid, a crosslinking density enhancer, an extender, a moisture resistant agent, a deducting oil, a colorant, a corrosion inhibitor, a surfactant, a pH adjuster, and combinations thereof. The carbohydrate may be natural in origin and derived from renewable resources. Additionally, the carbohydrate polymer may have a dextrose equivalent (DE) number from 2 to 20. In at least one exemplary embodiment, the carbohydrate is a water-soluble polysaccharide such as dextrin or maltodextrin and the crosslinking agent is citric acid. Advantageously, the carbohydrates have a low viscosity and cure at moderate temperatures. The environmentally friendly, formaldehyde-free binder may be used in the formation of insulation materials and non-woven chopped strand mats. A method of making fibrous insulation products is also provided.
대표청구항▼
1. A soy-containing binder composition for use in the formation of fibrous insulation products, the soy-containing binder composition comprising: a monosaccharide,a crosslinking agent comprising a polyamine,a catalyst comprising a Lewis acid,an acidic pH adjuster, anda soy protein,wherein the soy-co
1. A soy-containing binder composition for use in the formation of fibrous insulation products, the soy-containing binder composition comprising: a monosaccharide,a crosslinking agent comprising a polyamine,a catalyst comprising a Lewis acid,an acidic pH adjuster, anda soy protein,wherein the soy-containing binder composition is formaldehyde-free;wherein the monosaccharide comprises 60 wt. % to 90 wt. % of the binder composition; andwherein the pH of the soy-containing binder composition is from 2 to 5. 2. The soy-containing binder composition of claim 1, wherein the soy protein comprises soy flour. 3. The soy-containing binder composition of claim 1, wherein the soy protein comprises an amount up to and including 70 wt. % of the binder composition. 4. The soy-containing binder composition of claim 1, wherein the soy protein comprises 5 wt. % to 50 wt. % of the binder composition. 5. The soy-containing binder composition of claim 1, wherein the soy protein comprises 10 wt. % to 40 wt. % of the binder composition. 6. The soy-containing binder composition of claim 1, wherein the monosaccharide is selected from the group consisting of xylose, glucose, and fructose. 7. The soy-containing binder composition of claim 1, wherein the monosaccharide comprises 70 wt. % to 85 wt. % of the binder composition. 8. The soy-containing binder composition of claim 1, wherein the catalyst comprises 1 wt. % to 5 wt. % of the binder composition. 9. A fibrous insulation product comprising the soy-containing binder composition of claim 1. 10. The fibrous insulation product of claim 9, wherein the fibrous insulation product further comprises glass fibers.
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