| Patent Number |
Title Of Patent |
Date Issued |
| 6491853 |
Storage-stable plastics additives |
December 10, 2002 |
| The present application relates to storage-stable plastics additives which are prepared by cooling a mixture of 99.9 to 10% by weight of molten additive material and 0.1 to 90% by weight of crystalline additive material after a shaping process.The shaping process is carried out by forcin |
| 6225385 |
Oligomeric stabilizer mixture |
May 1, 2001 |
| The present invention relates to a stabilizer mixture prepared by partially condensing PCl.sub.3 with 2,2'-dimethyl-4,4'-dihydroxy-5,5'-di-tert-butyldiphenyl sulfide, where the phosphorus content is from 2 to 4% by weight and the content of 2,2'-dimethyl-4,4'-dihydroxy-5,5'-di-tert-b |
| 5919933 |
Light stabilizers based on sterically hindered amines |
July 6, 1999 |
| The present invention relates to novel UV stabilizers of the formula (I) ##STR1## where the substituents are as defined in the description. These compounds are highly suitable for stabilizing organic material, such as plastics, surface coatings, paints and oils, against the action of |
| 5852159 |
Plastic with reduced sulfur uptake rate |
December 22, 1998 |
| The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting ofI: oligomerized 2,2,4,4-tetramethyl-20(oxiranylmethyl)-7-oxa-3,20-diazadispiro[5.1.11.2]he n |
| 5633378 |
Polyalkylpiperidine compounds |
May 27, 1997 |
| Polyalkylpiperidine compounds of the formula I ##STR1## in which Y is the group ##STR2## are very effective stabilizers for organic materials. |
| 5594142 |
Process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds |
January 14, 1997 |
| The invention relates to a process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds, which can be used as highly active light stabilizers for polymers. The reaction is carried out in a solvent mixture of at least one alcohol and if appropriate an inert organic solven |
| 5550242 |
Process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds |
August 27, 1996 |
| The invention relates to a process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds, which can be used as highly active light stabilizers for polymers. The reaction is carried out in an inert organic solvent in the presence of solid alkali metal hydroxide or of the c |
| 5550234 |
Polyalkylpiperidine compounds |
August 27, 1996 |
| Polyalkylpiperidine compounds of the formula I ##STR1## in which Y is one of the groups ##STR2## are distinguished by very low volatility at elevated temperature and are very effective stabilizers for organic substances. |
