Polydialkylsiloxane/polyamide copolymer, process for producing the same, and various materials
US6503632B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31725
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A novel polydialkylsiloxane/polyamide copolymer which is excellent in biocompatibility, mechanical strength, and heat moldability, applicable for use in medical materials, ophthalmic materials, cosmetics, and electronic materials, and has a main chain represented by the formula (4), one end represented by the formula (5) and another end represented by the formula (6):—(NH—A—NHCO—B—CO)m—  (4)—NH—A—NH—X2  (5)—X1  (6)wherein the ratio of —R1—(Si(R2) (R3)—O)n1-Si(R2) (R3)—R1— as A to the divalent organic group having 1 to 20 carbon atoms as A is within the range of 1:0.01˜100, and the proportion of X1 and X2 being hydrogen atoms is 10% or less relative to all the end groups, a process for producing the same, and a variety of its uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.