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US 12,195,621 B2Granted
Modified urea-formaldehyde binders for non-woven fiber glass mats
AssigneeJohns Manville
InventorsGuodong Zheng, Mingfu Zhang, Luke Weith, Jawed Asrar
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Abstract
A method of forming a binder composition includes providing a urea-formaldehyde resin and combining one or more starch compounds with the urea-formaldehyde resin to form a starch modified urea-formaldehyde resin. The one or more starch compounds may be combined with the urea-formaldehyde resin so that the starch modified urea-formaldehyde resin includes about 1 wt. % to about 10 wt. % of the one or more starch compounds.
Claims17
A binder composition comprising:
- a starch modified urea-formaldehyde resin including:
- a urea-formaldehyde resin;
- and
- one or more starch compounds combined with the urea-formaldehyde resin to form the starch modified urea-formaldehyde resin;
- wherein the one or more starch compounds are combined with the urea-formaldehyde resin so that the starch modified urea-formaldehyde resin includes about 1 wt. % to about 10 wt. % of the one or more starch compounds;
- wherein the one or more starch compounds combined with the urea-formaldehyde resin comprises a starch slurry combined with an aqueous solution of formaldehyde and urea;
- and
- wherein the one or more starch compounds have a weight average molecular weight of between about 100,000 g/mol to about 2,000,000 g/mol.
5 more elements
A non-woven fiber mat comprising:
- a plurality of fibers that form a fiber mesh;
- and
- a binder composition applied to the fiber mesh to bond the plurality of fibers together, the binder composition comprising:
- a urea-formaldehyde resin;
- and
- one or more starch compounds combined with the urea-formaldehyde resin;
- wherein the binder composition includes about 1 wt. % to about 10 wt. % of the one or more starch compounds;
- wherein the urea-formaldehyde resin is synthesized from an aqueous solution of formaldehyde and urea and a starch slurry is added to the aqueous solution of formaldehyde and urea during synthesis of the urea-formaldehyde resin;
- and
- wherein the one or more starch compounds have a weight average molecular weight of between about 100,000 g/mol to about 2,000,000 g/mol.
7 more elements
Dependencies are inferred from the claim text.