Inventor

LEPPARD DAVID GEORGE

CH22 patents

⚠️ This page may combine multiple inventors who share the name “LEPPARD DAVID GEORGE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEPPARD DAVID GEORGE

CIBA SC HOLDING AG

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

Non-volatile phenylglyoxalic esters

Photopolymerizable compositions comprising alkoxyphenyl-substituted bisacylphosphine oxides

Molecular complex compounds of acylphosphine oxide and α-hydroxy ketones as photoinitiators

Photoinitiator mixtures and compositions with alkylphenylbisacylphosphine oxides

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

Color-photographic recording material

Alkoxyphenyl-substituted bisacylphosphine oxides

Polymeric compounds derived from 2-hydroxy-phenyl-s-triazines substituted with ethylenically unsaturated moieties

Process for the preparation of acylphosphines, acyl oxides and acyl sulfides

Acylphosphine oxides

Synergistic UV absorber combination

2-hydroxyphenyl-s-triazine crosslinkers for polymer networks

Highly compatible hydroxyphenyltriazine UV-absorbers

Transparent polymer articles of low thickness

Highly compatible hydroxyphenyltriazine UV-absorbers

Transparent polymer articles of low thickness

Dimeric light stabilizers for polyolefines and polyolefine copolymers

Color photographic material

Process for the preparation of acylphosphines, acyl oxides and acyl sulfides

Process for the preparation of acylphosphines, acyl oxides and acyl sulfides

CIBA GEIGY CORP

2-Hydroxyphenyl-s-Triazines substituted with ethylenically unsaturated moieties