Patent · US Active

Transparent siloxane encapsulant and adhesive

US11084928B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

Inkron Oy · FI

Inventors

Juha Rantala · Oulu, FI
Jarkko Heikkinen · Espoo, FI
Janne Kylmä · Helsinki, FI

Key dates

Filing date	May 13, 2019
Grant date	Aug 10, 2021
Priority date	—
Expiry date	May 13, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

An adhesive or encapsulant composition, having a siloxane polymer having a molecular weight of from 300 to 150,000 g/mol and having a viscosity of from 1000 to 100,000 mPa-sec at 5 rpm viscometer and at 25° C., and a curing agent that aids in curing the siloxane polymer upon the application of ultraviolet light. The composition is transmissive to visible light with an optical transmissivity of 95% or more in the visible spectrum at a thickness of 1 mm or less, and wherein the siloxane polymer is a material formed without hydrosilylation and has less than 5 mol % of Si—OH groups compared to all groups bound to Si therein, and substantially no Si—H bonds.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.