← Back to Patent Explorer
US3878263A Expired / Lapsed US ⏱️ 0.0 years remaining

Acrylate-functional polysiloxane polymers

Assignee: Wacker Chemical Corp
•
Filing: 1972-07-10
•
Granted: 1975-04-15
•
Expires: 1992-07-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention relates to novel acrylate and substituted acrylate-functional polysiloxane polymers of the general formula IN WHICH THE R(s) may be the same or different and represent hydrogen or monovalent hydrocarbon radicals having from one to 12 carbon atoms, R'' is a monovalent hydrocarbon radical, a halogenated monovalent hydrocarbon radical or a cyanoalkyl radical having from one to 18 carbon atoms, R'''' is a divalent hydrocarbon radical having from one to 18 carbon atoms or the corresponding divalent hydrocarbon radical having C - O - C linkages, R'''''' is a radical selected from the class consisting of R''''''''O0.5 and R''3SiO0.5, Z is a group selected from the class consisting of OR'''''''', R''''''''or OSiR''3 in which R'''''''' is hydrogen or a monovalent hydrocarbon radical, a and b are each numbers of from 1 to 20,000, c is a number of from 0 to 3 and e is a number of from 0 to 2 and when c is equal to 0, then at least one Z must be OR''''''''. These polysiloxane polymers may be used as reactive intermediates for preparing copolymers, as sizing agents and as protective coatings.

Inventors

  • 👤 Eugene Ray Martin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:23
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 6 words
POLYSILOXANE POLYMERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim 6 words
POLYSILOXANE POLYMERS OF THE GENERAL FORMULA
Claim 3
Dependent Claim 11 words
The composition of claim 1 wherein R is a methyl radical.
Claim 4
Dependent Claim 9 words
The compositoin of claim 1 wherein R is hydrogen.
Claim 5
Dependent Claim 11 words
The composition of claim 1 wherein R'''' is an alkyl radical.
Claim 6
Dependent Claim 23 words
The composition of claim 1 wherein R'''''' is OR'''''''' and R'''''''' is selected from the group consisting of hydrogen and monovalent hydrocarbon radicals.

References Cited (Backward Citations)

US3156668A Cited
US3346610A Cited
US3417161A Cited
US3542585A Cited
US3652711A Cited
US3779987A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-14 1978-10-14 1979-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-14 1982-10-14 1983-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-14 1986-10-14 1987-04-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag