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US4652664A Expired / Lapsed US ⏱️ 0.0 years remaining

Addition products prepared from mercapto-functional polyhydric alcohols and vinyl-type silanes containing hydrolyzable groups

Assignee: PPG Industries Inc
•
Filing: 1986-01-03
•
Granted: 1987-03-24
•
Expires: 2006-01-03
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Abstract

Abstract Disclosed is a free-radical addition product of a mercapto-functional polyhydric alcohol and a vinyl-type silane having at least one hydrolyzable group directly attached to a silicon atom, the addition product prepared by reacting the mercapto-functional polyhydric alcohol and the vinyl-type silane in the presence of a free radical initiator. The addition product contains at least two hydroxyl groups bonded to carbon atoms and at least one silicon atom bonded to at least one hydrolyzable group. The resulting polyhydroxyl-functional addition products can be chain extended using organic polyisocyanates to produce isocyanate-terminated compounds which also contain silicon atoms directly bonded to hydrolyzable groups along the molecule chains.

Inventors

  • 👤 Debra L. Singer
  • 👤 Rostyslaw Dowbenko

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:25
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3893; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 46 words
An addition product of a mercapto-functional polyhydric alcohol and a vinyl-type silane having at least one hydrolyzable group directly attached to a silicon atom, said addition product prepared by reacting said mercapto-functional polyhydric alcohol and said vinyl-type silane in the presence of a free radical initiator.
Claim 2
Dependent Claim 46 words
An addition product of a mercapto-functional polyhydric alcohol and a vinyl-type silane having at least one hydrolyzable group directly attached to a silicon atom, said addition product prepared by reacting said mercapto-functional polyhydric alcohol and said vinyl-type silane in the presence of a free radical initiator.
Claim 3
Dependent Claim 15 words
The addition product of claim 1 wherein said vinyl-type silane is a vinyl trialkoxy silane.
Claim 4
Dependent Claim 28 words
The addition product of claim 2 wherein said vinyl trialkoxy silane is selected from the group consisting of vinyl trimethoxy silane, vinyl triethoxy silane and a mixture thereof.
Claim 5
Dependent Claim 92 words
The addition product of claim 1 wherein said hydrolyzable group, each of which may be the same or different, is selected from the group consisting of --OR 1 , ##STR2## and the monohydroxy and/or cyclic C 2 -C 3 residue of a 1,2- or 1,3-glycol, wherein R 1 represents C 1 -C 4 alkyl, R 2 independently represents H or C 1 -C 4 alkyl, R 3 and R 4 independently represent H, C 1 -C 4 alkyl, C 6 -C 8 aryl and R 5 represents C 4 -C 7 alkylene.
Claim 6
Dependent Claim 27 words
The addition product of claim 1 wherein said hydrolyzable group, each of which may be the same or different, represents a C 1 -C 4 alkoxy group.

References Cited (Backward Citations)

US3654332A Cited
US3686326A Cited
US4033934A Cited
US4384132A Cited
US4278585A Cited
US4269991A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-03-23 1990-09-22 1991-03-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-03-23 1994-09-22 1995-03-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-03-23 1998-09-22 1999-03-24 $7700.00 Window Closed / Lapsed

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