GB463688A - Improvements in or relating to synthetic resin products - Google Patents
Improvements in or relating to synthetic resin productsInfo
- Publication number
- GB463688A GB463688A GB2698435A GB2698435A GB463688A GB 463688 A GB463688 A GB 463688A GB 2698435 A GB2698435 A GB 2698435A GB 2698435 A GB2698435 A GB 2698435A GB 463688 A GB463688 A GB 463688A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cresylic acid
- cresol
- paraformaldehyde
- per cent
- rosin
- 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
- C08G8/28—Chemically modified polycondensates
- C08G8/34—Chemically modified polycondensates by natural resins or resin acids, e.g. rosin
Landscapes
- Chemical & Material Sciences (AREA)
- General 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
A synthetic resin is prepared by heating together a natural resin (e.g. colophony, gum rosin, or run Congo), cresylic acid having a m-cresol content of not less than 50 per cent, and an anhydrous polymer of formaldehyde (e.g. paraformaldehyde or trioyxmethylene), until condensation of the three ingredients has taken place, and subsequently, preferably after a vacuum distillation, heating the product with a polyhydric alcohol (e.g. glycerol or polyethylene glycol) in the presence of a small quantity of a compound of an alkaline earth metal soluble in the reaction mix (e.g. lime, calcium acetate or magnesium borate) as catalyst. The final product may be vacuum distilled. It is preferable that condensation be carried out under a reflux condenser so adjusted so that the most volatile constituent may escape; that the conditions of time and temperature be so adjusted during the final step that the product has an acid number of about 15; that the m-cresol content of the cresylic acid used be between 50 and 60 per cent; and that the formaldehyde polymer be employed in slightly more than two molecular proportions relative to cresol. In examples, (I) pale green rosin, cresylic acid (m-cresol, 60 per cent) and paraformaldehyde are condensed under reflux, and then vacuum distilled, the residue being condensed with glycerol in the presence of lime and then vacuum distilled; (II) WW rosin, cresylic acid (m-cresol, 50 per cent) and paraformaldehyde are treated as in example I. It is stated that the mixed distillates obtained in example I may be used as a disinfectant. British Specification 259,030, [Class 2 (iii)], and French Specification 592,584 are referred to.ALSO:In a process for preparing synthetic resin by heating pale gum rosin, cresylic acid, and paraformaldehyde under reflux, vacuum distilling, adding glycerine and lime, and again vacuum distilling, the mixed distillates, containing rosin acids, cresylic acid, formaldehyde, glycerol, and water, are stated to be of use as a disinfectant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2698435A GB463688A (en) | 1935-09-30 | 1935-09-30 | Improvements in or relating to synthetic resin products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2698435A GB463688A (en) | 1935-09-30 | 1935-09-30 | Improvements in or relating to synthetic resin products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB463688A true GB463688A (en) | 1937-03-30 |
Family
ID=10252296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2698435A Expired GB463688A (en) | 1935-09-30 | 1935-09-30 | Improvements in or relating to synthetic resin products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB463688A (en) |
-
1935
- 1935-09-30 GB GB2698435A patent/GB463688A/en not_active Expired
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