JPS54133572A - Manufacturing of flame retardant laminate - Google Patents
Manufacturing of flame retardant laminateInfo
- Publication number
- JPS54133572A JPS54133572A JP4154878A JP4154878A JPS54133572A JP S54133572 A JPS54133572 A JP S54133572A JP 4154878 A JP4154878 A JP 4154878A JP 4154878 A JP4154878 A JP 4154878A JP S54133572 A JPS54133572 A JP S54133572A
- Authority
- JP
- Japan
- Prior art keywords
- flame retardant
- methylol
- varnish
- guanamine
- methylol melamine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
PURPOSE: To manufacture a thick, flame retardant laminate, easily, by hot-pressing a plurality of prepreg sheets obtained by using a methylol melamine, methylol guanamine, etc., as a pretreating agent as wall as flame retardant of varnish.
CONSTITUTION: A substrate such as kraft paper, etc., is impregnated with a pretreating solution obtained by dissolving methylol melamine, methylol guanamine, etc. in water, alcohol, etc., and a pretreated substrate containing 5W20 wt% of the pretreating agent can be obtained. A prepreg sheet is prepared by coating the avobe pretreated substrate with a solution or varnish of a novolak phenolic resin which is made flame retardant by adding methylol melamine, methylol guanamine, etc. A desired number of the prepreg sheets are stacked, and pressed at about 140W160°C and about 80W120 kg/cm2 for about 1 hour to obtain the flame retardant laminate. The amount of the methylol melamine, etc., in the varnish is 30W60 wt% based on the novolak phenolic resin.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4154878A JPS54133572A (en) | 1978-04-08 | 1978-04-08 | Manufacturing of flame retardant laminate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4154878A JPS54133572A (en) | 1978-04-08 | 1978-04-08 | Manufacturing of flame retardant laminate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54133572A true JPS54133572A (en) | 1979-10-17 |
Family
ID=12611469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4154878A Pending JPS54133572A (en) | 1978-04-08 | 1978-04-08 | Manufacturing of flame retardant laminate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54133572A (en) |
-
1978
- 1978-04-08 JP JP4154878A patent/JPS54133572A/en active Pending
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