CA2045093A1 - Procede de fabrication de polymeres et de copolymeres a faible densite optique servant a des photoresines et a des applications optiques - Google Patents

Procede de fabrication de polymeres et de copolymeres a faible densite optique servant a des photoresines et a des applications optiques

Info

Publication number
CA2045093A1
CA2045093A1 CA 2045093 CA2045093A CA2045093A1 CA 2045093 A1 CA2045093 A1 CA 2045093A1 CA 2045093 CA2045093 CA 2045093 CA 2045093 A CA2045093 A CA 2045093A CA 2045093 A1 CA2045093 A1 CA 2045093A1
Authority
CA
Canada
Prior art keywords
polymers
transesterification
optical density
over
low optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2045093
Other languages
English (en)
Other versions
CA2045093C (fr
Inventor
Michael T. Sheehan
James H. Rea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TriQuest LP
Original Assignee
Hoechst Celanese Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/706,601 external-priority patent/US5239015A/en
Application filed by Hoechst Celanese Corp filed Critical Hoechst Celanese Corp
Publication of CA2045093A1 publication Critical patent/CA2045093A1/fr
Application granted granted Critical
Publication of CA2045093C publication Critical patent/CA2045093C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
CA 2045093 1990-10-26 1991-06-20 Procede de fabrication de polymeres et de copolymeres a faible densite optique servant a des photoresines et a des applications optiques Expired - Lifetime CA2045093C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US60484790A 1990-10-26 1990-10-26
US07/604,847 1990-10-26
US07/706,601 1991-05-28
US07/706,601 US5239015A (en) 1990-06-29 1991-05-28 Process for making low optical density polymers and copolymers for photoresists and optical applications

Publications (2)

Publication Number Publication Date
CA2045093A1 true CA2045093A1 (fr) 1992-04-27
CA2045093C CA2045093C (fr) 2004-02-03

Family

ID=27084782

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2045093 Expired - Lifetime CA2045093C (fr) 1990-10-26 1991-06-20 Procede de fabrication de polymeres et de copolymeres a faible densite optique servant a des photoresines et a des applications optiques

Country Status (1)

Country Link
CA (1) CA2045093C (fr)

Also Published As

Publication number Publication date
CA2045093C (fr) 2004-02-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202