Invention Grant
US09080086B2 Melamine-reinforced UF glues with up to 0.9% of melamine for producing medium-density fiberboard
有权
三聚氰胺增强UF胶与高达0.9％的三聚氰胺生产中密度纤维板
- Patent Title: Melamine-reinforced UF glues with up to 0.9% of melamine for producing medium-density fiberboard
- Patent Title (中): 三聚氰胺增强UF胶与高达0.9％的三聚氰胺生产中密度纤维板
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Application No.: US13852427Application Date: 2013-03-28
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Publication No.: US09080086B2Publication Date: 2015-07-14
- Inventor: Michael Finkenauer , Konrad Roschmann , Ralph Lunkwitz , Stephan Weinkötz
- Applicant: BASF SE
- Applicant Address: DE
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE
- Agency: Drinker Biddle & Reath LLP
- Main IPC: C08G12/12
- IPC: C08G12/12 ; C09J161/30 ; C08G12/00
Abstract:
The present invention relates to a process for producing melamine-urea-formaldehyde resins with up to 0.9% of melamine by reacting a) urea which comprises from 0 to 10% by weight of one or more compounds A, formaldehyde, and melamine in the presence of a base at a pH of from 7.5 to 11, at a temperature of from 20 to 120° C., and at a pressure of from 0.1 to 10 bar, b) and then carrying out reaction in the presence of an acid which optionally comprises urea with from 0 to 10% by weight of one or more compounds A, at a temperature of from 60 to 180° C., and at a pressure of from 0.1 to 10 bar, and c) and then adding urea which comprises from 0 to 10% by weight of one or more compounds A, which comprises carrying out b) at a pH of from 4 to 5.9.
Public/Granted literature
- US20130331541A1 Melamin-verstärkte UF-Leime mit bis zu 0,9% Melamin für die Herstellung von mitteldichten Faserplatten Public/Granted day:2013-12-12
Information query
