GB982248A - Production of phenol-formaldehyde condensation products - Google Patents
Production of phenol-formaldehyde condensation productsInfo
- Publication number
- GB982248A GB982248A GB2125461A GB2125461A GB982248A GB 982248 A GB982248 A GB 982248A GB 2125461 A GB2125461 A GB 2125461A GB 2125461 A GB2125461 A GB 2125461A GB 982248 A GB982248 A GB 982248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- alkali metal
- metal hydroxide
- mols
- viscosity
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
- C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
- C08G8/24—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with mixtures of two or more phenols which are not covered by only one of the groups C08G8/10 - C08G8/20
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
One hydroxyl equivalent of a phenol, 3,31- or 4,41-methylene bisphenol or a mixture thereof, is reacted at raised temperature in aqueous medium initially with 2.1 to 3.25 mols. formaldehyde and 0.3 to 0.6 mols. alkali metal hydroxide, the proportion of alkali metal hydroxide being 14-20 mol. per cent based on the formaldehyde, until a viscosity of at least 100 MacMichael 26d units at 70 DEG F. is attained, additional aqueous alkali metal hydroxide is added to a total not exceeding 0.8 mol. and reaction is continued at raised temperature until the viscosity at 70 DEG F. is 50-250 Mac-Michael units. Still more aqueous alkali metal hydroxide is then added to a total of 1.0 to 2.0 mols. and reaction continued at raised temperature, the viscosity at 70 DEG F. after addition of each increment not being allowed to exceed 150 MacMichael units, and finally the reaction mixture is rapidly cooled. Up to 15% by weight of the phenol may be replaced by cresols, xylenols or polyphenyl phenols, which occur in still bottoms during purification by distillation of phenol and vanillin. The highly reactive products may be used as adhesives for wood substitutes, paper, cardboard or cloth. Conventional additives, e.g. fillers, soda ash, soluble silicates, ammonia, defoamers, hardeners, buffers salts, dyes, carboxy-methyl cellulose, hydroxyethyl cellulose, polyelectrolytes, polyolefins or polyesters, may be added. The products of the invention may also be used in admixture with conventional protein adhesives.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3544260A | 1960-06-13 | 1960-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB982248A true GB982248A (en) | 1965-02-03 |
Family
ID=21882702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2125461A Expired GB982248A (en) | 1960-06-13 | 1961-06-13 | Production of phenol-formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB982248A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758478A (en) * | 1986-09-30 | 1988-07-19 | Daisy Nick K | Fast curing phenolic resins and bonding methods employing same |
| US5074946A (en) * | 1986-09-30 | 1991-12-24 | Borden, Inc. | Wood bending methods employing fast curing phenolic resins |
-
1961
- 1961-06-13 GB GB2125461A patent/GB982248A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758478A (en) * | 1986-09-30 | 1988-07-19 | Daisy Nick K | Fast curing phenolic resins and bonding methods employing same |
| US5074946A (en) * | 1986-09-30 | 1991-12-24 | Borden, Inc. | Wood bending methods employing fast curing phenolic resins |
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