Process for the production of fiberglass mats

• US 4,904,522 A
• Filed: 07/26/1988
• Issued: 02/27/1990
• Est. Priority Date: 07/26/1988
• Status: Expired due to Term

• Current Assignee: Mobay Corporation
• Original Assignee: Mobay Corporation
• Inventors: Markusch, Peter H.
• Primary Examiner(s): Bell, James J.
• Application Number:
  US07/224,847
• Time in Patent Office: 581 Days
• Field of Search: 418/268, 418/273, 418/288, 418/289, 418/290, 418/224, 418/425.6, 418/426, 418/423.1, 418/425.8, 524/834, 524/840
• US Class Current: 442/180
• CPC Class Codes: C03C 25/25 Non-macromolecular compounds
• CPC Class Codes: C08G 18/706 the liquid medium being water
• CPC Class Codes: D04H 1/587 characterised by the bonding agents used
• CPC Class Codes: D04H 1/64 the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 442/2992 Coated or impregnated glass fiber fabric

Abstract

The present invention is directed to a process for the production of fiberglass mats by binding fiberglass with binders based on aqueous polyisocyanate emulsions which do not contain waterglass.

The present invention is also directed to the fiberglass mats produced by this process.

Claims

1. A process for the production of a fiberglass mat which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.

2. The process of claim 1 wherein said polyisocyanate dispersion is used in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.

3. The process of claim 1 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.

4. The process of claim 2 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.

5. The process of claim 1 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.

6. The process of claim 2 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.

7. A process for the production of fiberglass mats which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.

8. The process of claim 7 wherein said polyisocyanate dispersion is rendered hydrophilic by treatment with a compound containing a lateral or terminal nonionic hydrophilic group.

9. A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.

10. The fiberglass mat of claim 9 wherein said polyisocyanate dispersion is used in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.

11. The fiberglass mat of claim 9 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.

12. The fiberglass mat of claim 10 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.

13. The fiberglass mat of claim 9 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.

14. The fiberglass mat of claim 10 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.

15. A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.

16. The fiberglass mat of claim 15 wherein said polyisocyanate dispersion is rendered hydrophilic by treatment with a compound containing a lateral or terminal nonionic hydrophilic group.