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Glass mat reinforcement

A technology of glass mat and glass fiber, applied in the direction of textiles, papermaking, non-woven fabrics, etc., can solve the problem that formaldehyde-free binders cannot provide all the necessary properties

Inactive Publication Date: 2018-03-27
SAINT GOBAIN ADFORS CANADA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some previously available formaldehyde-free binders for nonwoven mats do not provide adequate end product with all the necessary properties

Method used

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  • Glass mat reinforcement
  • Glass mat reinforcement
  • Glass mat reinforcement

Examples

Experimental program
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Embodiment 1

[0039] Embodiment 1. A glass mat comprising: a glass fiber assembly; and a binder composition comprising a polymeric resin having a pH of at least about 5.0 and a crosslinking agent, wherein The polymer resin includes a styrenic copolymer, an acrylic copolymer, or a combination thereof having at least one functional group of carboxylic acid, a salt of a carboxylic acid, an acid anhydride, a salt of an anhydride, or a combination thereof; the crosslinking agent includes a polyhydric alcohol , polyepoxides, polycarbodiimides, polyethylenimides, divalent metal carbonates, or combinations thereof.

Embodiment 2

[0040] Embodiment 2. A method of making a glass mat, the method comprising providing a glass mat, wherein the glass mat comprises: a fiberglass assembly; and a binder composition comprising A polymer resin and a crosslinking agent at a pH of 1, wherein the polymer resin comprises a styrenic copolymer, an acrylic copolymer having at least one functional group of a carboxylic acid, a salt of a carboxylic acid, an anhydride, a salt of an anhydride, or a combination thereof or a combination thereof; the crosslinking agent includes polyhydric alcohol, polyepoxide, polycarbodiimide, polyaziridine, divalent metal carbonate or a combination thereof.

Embodiment 3

[0041] Embodiment 3. The glass mat or method of any one of the preceding embodiments, wherein the styrenic copolymer is prepared from a styrenic monomer and at least one ethylenically unsaturated monomer, the ethylenically unsaturated monomer Including aromatic, carboxylic acid, carboxylic anhydride, acrylic acid, acrylate ester, conjugated diene functional groups or combinations thereof.

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Abstract

A glass mat is provided. The glass mat includes an assembly of glass fibers; and a binder composition including a polymer resin and a crosslinker. The polymer resin has a pH of at least about 5.0. Thepolymer resin includes a styrenic copolymer, an acrylic copolymer, or combination thereof having at least one functional group of a carboxylic acid, a salt of a carboxylic acid, an anhydride, a saltof an anhydride, or combination thereof. The crosslinker includes a polyol, a polyepoxy, a polycarbodiimide, a polyaziridine, a bivalent metal carbonate, or combination thereof. Further provided is amethod of making the glass mat.

Description

technical field [0001] The present disclosure relates to glass mats and methods for making glass mats. Background technique [0002] Resin-based binders for wet laid chopped glass fiber mats for building materials are conventionally prepared using urea formaldehyde ("UF") binders. In some countries, increasing environmental pressures have led to current or proposed legislation that may limit or eliminate formaldehyde emissions. Accordingly, the demand for compositions that do not emit formaldehyde continues to grow. [0003] Different types of formaldehyde-free binder chemistries have been investigated as environmentally friendly alternatives to urea formaldehyde. However, some previously available formaldehyde-free binders for nonwoven mats do not provide adequate end product with all the necessary properties. For example, the binder must provide sufficient dry tensile strength, hot tensile strength, and tear strength to pass any commercial standards for the resulting pr...

Claims

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Application Information

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IPC IPC(8): B29C70/06B29C70/28C08J5/04B29K509/08
CPCC03C25/285C08J3/24D04H1/4218C08J2300/105C08J2325/08C08J2333/06D04H1/587C08J5/043C04B14/42C04B16/04D04H1/64
Inventor C·A·加尔斯T·于C-H·赖
Owner SAINT GOBAIN ADFORS CANADA LTD
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