GB795947A - Cross linking isocyanate modified linear polyesters - Google Patents
Cross linking isocyanate modified linear polyestersInfo
- Publication number
- GB795947A GB795947A GB168057A GB168057A GB795947A GB 795947 A GB795947 A GB 795947A GB 168057 A GB168057 A GB 168057A GB 168057 A GB168057 A GB 168057A GB 795947 A GB795947 A GB 795947A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminobenzaldoxime
- group
- cross linking
- dibenzoyldioxime
- benzoquinonedioxime
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Polyisocyanate modified polyesters are crosslinked by an oxime containing in its molecule, in addition to the =N-OH group, a further group that is reactive towards isocyanates (e.g. an -OH, -NH2 or another =N-OH group). Suitable cross-linking agents are (a) hydroxamic acids of formula <FORM:0795947/IV (a)/1> where R is an alkyl, aryl or alicyclic radical; (b) dioximes having the general formula <FORM:0795947/IV (a)/2> where R has the above meaning, or HO-N=CH-R1-CH=N-OH where R1 is alkylene, arylene or a divalent alicyclic radical or dinitroresorcinol, benzoquinonedioxime or dibenzoyldioxime or (c) m-, or p-aminobenzaldoxime or p-methylol-benzaldoxime. In examples: (1), (2) and (3) a 1.5-naphthalene diisocyanate modified polyester is heated at 110 DEG C. with methylene-bis-thioglycolic acid butyl ester and with p-aminobenzaldoxime, p-methylolbenzaldoxime or m-aminobenzaldoxime; (4) and (5) a 1,5-naphthalene diisocyanate modified polyester is heated at 110 DEG C. with benzoquinonedioxime or dibenzoyldioxime.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1953P0011083 DE959136C (en) | 1953-12-30 | 1953-12-30 | Process for the production of crosslinked plastics from isocyanate-modified polyesters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB795947A true GB795947A (en) | 1958-06-04 |
Family
ID=6710854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB168057A Expired GB795947A (en) | 1953-12-30 | 1954-10-27 | Cross linking isocyanate modified linear polyesters |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE959136C (en) |
| GB (1) | GB795947A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1097129B (en) * | 1958-12-30 | 1961-01-12 | Bayer Ag | Process for the production of foams by the isocyanate polyaddition process |
-
1953
- 1953-12-30 DE DE1953P0011083 patent/DE959136C/en not_active Expired
-
1954
- 1954-10-27 GB GB168057A patent/GB795947A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE959136C (en) | 1957-02-28 |
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