Claims
- 1. Highly branched compounds composed of phosphorus-containing structural units and melamine units, comprising:
- A) from 70 to 99.5% by weight of structural units corresponding to formula (AI) or (AI') ##STR14## wherein R.sub.1 stands for a C.sub.1 -C.sub.10 alkyl group or an aromatic ring having 6 to 12 carbon atoms,
- D stands for oxygen,
- d denotes 1,
- n stands for integers from 2 to 1000 and
- X stands for the following formula ##STR15## wherein Y denotes a single bond or C.sub.1 -C.sub.3 -alkylene, C.sub.5 -C.sub.12 -cycloalkylene, O, S, CO or SO.sub.2,
- R' and R" denote, independently, C.sub.1 -C.sub.10 -alkyl, halogen, phenyl or hydrogen,
- a stands for zero or 1, and
- t.sub.1 and t.sub.2 denote, independently, 0, 1, 2, 3 or 4, or
- X denotes a naphthylene or phenolphthalein group, and
- B) from 0.5 to 30% by weight of structural units of one or more compounds corresponding to formula (BII) or (BIII) ##STR16## wherein R.sub.2 stands for a CH.sub.2 --O structural unit or hydrogen
- R.sub.3 stands for a CH.sub.2 --O structural unit and
- T stands for an optionally substituted C.sub.1 -C.sub.10 -alkylene, C.sub.5 -C.sub.10 -cycloalkylene or C.sub.6 -C.sub.10 -arylene group or an optionally substituted diphenylmethane group,
- together with structural units derived from polyphenols having 3 or 4 aromatic OH groups.
- 2. Plastics containing the highly branched compounds of claim 1 and a color stabilizer.
- 3. A synthetic resin containing the highly branched compounds of claim 1.
- 4. A process for the preparation of the highly branched compounds as claimed in claim 1, wherein a phosphonic acid ester is transesterified with an aromatic dihydroxy compound and a compound on which the structural units of the formula B) in claim 1 are based, in the solvent-free state under nitrogen at atmospheric pressure or reduced pressure in the presence of a catalytic quantity of transesterification catalyst with removal of the volatile constituents by distillation.
- 5. A thermoplastic molding composition comprising:
- i) 30 to 98% by weight of polyalkylene terephthalate; and
- ii) 2 to 30% by weight of highly branched compounds composed of phosphorus-containing structural units and melamine units, comprising:
- A) from 70 to 99.5% by weight of structural units corresponding to formula (AI)or (AI') ##STR17## wherein R.sub.1 stands for a C.sub.1 -C.sub.10 alkyl group or an aromatic ring having 6 to 12 carbon atoms,
- D stands for oxygen,
- d denotes 1,
- n stands for integers from 2 to 1000 and
- X stands for the following formula ##STR18## wherein Y denotes a single bond or C.sub.1 -C.sub.3 -alkylene, C.sub.5 -C.sub.12 -cycloalkylene, O, S, CO or SO.sub.2,
- R' and R" denote, independently, C.sub.1 -C.sub.10 -alkyl, halogen, phenyl or hydrogen,
- a stands for zero or 1, and
- t.sub.1 and t.sub.2 denote, independently, 0, 1, 2, 3, or 4 or
- X denotes a naphthylene or phenolphthalein group, and
- B) from 0.1 to 40% by weight of structural units of one or more compounds corresponding to formula (BII) or (BIII) ##STR19## wherein
- R.sub.2 stands for a CH.sub.2 --O structural unit or hydrogen
- R.sub.3 stands for a CH.sub.2 --O structural unit and
- T stands for an optionally substituted C.sub.1 -C.sub.10 -alkylene, C.sub.5 -C.sub.10 -cycloalkylene or C.sub.6 -C.sub.10 -arylene group or an optionally substituted diphenylmethane group,
- together with structural units derived from polyphenols having 3 or 4 aromatic OH groups.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4028268 |
Sep 1990 |
DEX |
|
4113157 |
Apr 1991 |
DEX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/750,063 filed on Aug. 26, 1991, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0074090 |
Mar 1983 |
EPX |
0324356 |
Jul 1989 |
EPX |
2307813 |
Nov 1976 |
FRX |
1336052 |
Nov 1973 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Schmidt et al., Die Angewandte Makrokromolekularie Chemie 132:1-18 (1985). |
Continuations (1)
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Number |
Date |
Country |
Parent |
750063 |
Aug 1991 |
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