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US 6,171,654 B2Granted
Method for bonding glass fibers with cross-linkable polyester resins
AssigneeSeydel Research, Inc.
InventorsRobert Keith Salsman, Timothy Shouting Wang
Life of this patent
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Abstract
Water-soluble or water-dispersible and curable polyester resins are suitable as binders in various applications, The resins are reaction products of polyterephthalate, polyols, polyacids, end acids and crosslinking agents. The waste terephthalates can be utilized when making the binders of the present invention. The preferred polyol is pentaerythritol. The resins can be used as binder for glass fiber insulation products.
Claims5
A method for bonding glass fibers which method comprises:
- (a) forming a mat containing a plurality of enmeshed glass fibers;
- (b) spraying said fibers with a cross-linkable binder comprising a reaction product of 5-50% by weight of pentaerythritol, 20-60% by weight of terephthalate polymer, and 1-15% by weight of trimellitic acid, mixed with 5-40% of a crosslinking agent;
- and
- (c) heat curing the resulting glass fiber product having the binder thereon.
1 more element
A method for bonding glass fibers which method comprises:
- (a) forming a mat containing a plurality of enmeshed glass fibers;
- (b) spraying said fibers with a binder comprising a reaction product of 20-60% by weight of pentaerythritol, 5-50% by weight of waste terephthalate polymer, 1-15% by weight of trimellitic anhydride, mixed with 5-40% by weight of melamine resin and 0.01-2% by weight of p-toluene acid;
- (c) curing the resulting glass fiber product having the binder thereon.
Dependencies are inferred from the claim text.