Process for the production of shapeable polymers containing N-silyl groups

• US 3,903,046 A
• Filed: 12/11/1973
• Issued: 09/02/1975
• Est. Priority Date: 02/24/1972
• Status: Expired due to Term

• Current Assignee: Dieter Lohmann, Gerd Greber, Martin Kuhn, Sandor Gati, Urs Gruber
• Original Assignee: Dieter Lohmann, Gerd Greber, Martin Kuhn, Sandor Gati, Urs Gruber
• Inventors: Greber, Gerd, Gruber, Urs, Kuhn, Martin, Lohmann, Dieter, Gati, Sandor
• Primary Examiner(s): Lee, Lester L.
• Application Number:
  US05/423,860
• Time in Patent Office: 630 Days
• Field of Search: 260/47CP,65,78TF,46.5E
• US Class Current: 525/431
• CPC Class Codes: C08G 69/48 Polymers modified by chemical after-treatment
• CPC Class Codes: C08G 73/106 containing silicon

Abstract

The invention relates to a process for the production of shapeable polymers containing N-silyl groups, of the polyamide, polyamide-imide and polyimide type, which polymers can be used for the production of shaped structures such as fibres, films, coatings, adhesives and the like. The polymers obtained by the process of this invention are distinguished by an inherent viscosity of from 0.1 to 4.0 dl/g and by their improved solubility in organic solvents which facilitates the processing of said polymers.

Claims

1. PROCESS FOR MAKING A POLYAMIDE OR POLYAMIDE-ACID POLYMER WHICH CONTAINS N-SILYL GROUPS, IS SOUBLE IN ORGANIC SOLVENTS, HAS AN INHERENT VISCOSITY AT A CONCENTRATION OF 0.5 PERCENT BY WEIGHT IN N,N-DIMETHYLFORMAMIDE, N,N-DIMETHYLACETAMIDE OR N-METHYL-PYRROLIDONE, MEASURED AT 25*C, OF 0.1 TO 4.0 DL/G, SAID POLYMER HAVING A RECURRING STRUCTURAL UNIT OF FORMULA I

2. Process according to claim 1, characterised in that bis-trimethylsilylacetamide or N-methyl-N-trimethylsilylacetamide is used as silylating agent of formula XV.

3. Process according to claim 1, characterised in that a polyamide-acid having the recurring structural unit of formula II is used in which R denotes the benzene ring of the benzophenone ring system, n1 and n2 denote the number 2, and E denotes a benzene ring, a 4,4'"'"''"'"'-diphenylsulphone or 4,4'"'"''"'"'-diphenylene radical.

4. Process according to claim 1, characterised in that a polyamide-acid having the recurring structural unit of formula II is used in which R denotes the benzene ring or the benzophenone ring system, n1 and n2 denote the number 2, and E denotes a 4,4'"'"''"'"'-diphenylyl-ether radical.

5. Process according to claim 1, characterised in that a polyamide-acid having the recurring structural unit of formula II is used in which R denotes the benzene ring, n1 denotes the number 2, n2 denotes the number 1, and E denotes a benzene ring, a 4,4'"'"''"'"'-diphenylylsulphone or 4,4'"'"''"'"'-diphenylylene radical.

6. Process according to claim 1, characterised in that a polyamide-acid having the recurring structural unit of formula II is used in which R denotes the benzene ring, n1 denotes the number 2, n2 denotes the number 1, and E denotes a 4,4'"'"''"'"'-diphenylyl-ether radical.

7. Process according to claim 1, characterised in that a polyamide having the recurring structural unit of formula II is used in which R and E each denote the benzene ring and n1 and n2 each denote the number 1.