Organopolysiloxane resins of increased hardness

Details Organopolysiloxane resins of increased hardness Organopolysiloxane resins of increased hardness

1978-12-04

1980-09-16

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

260 292M, 260 334SB, 427387, 428412, 428447, C08G 7706

Patent

active

042231213

ABSTRACT:
A process for forming organopolysiloxanes from trialkoxysilanes and the resulting resinous products are disclosed, characterized in that the organopolysiloxane resins have increased hardness when hydrolysis and condensation of the trialkoxysilanes are carried out in aqueous solution acidified by formic acid and at a relatively high strength previously regarded as inoperative. The formic acid, for example, may be present in an amount greater than 700 ppm. After hydrolysis of the trialkoxysilane, the resulting silonetriol is condensed to form the organopolysiloxane.

REFERENCES:
patent: 3457221 (1969-07-01), Stengle, Jr.
patent: 3460980 (1969-08-01), Burzynski
patent: 3474070 (1969-10-01), Levene
patent: 3491054 (1970-01-01), Thomas
patent: 4006271 (1977-02-01), French et al.
Morrison et al., Organic Chemistry, p. 454, Allyn and Bacon, Inc., Boston (1959).

Affiliated with

Also associated with

Rating

Organopolysiloxane resins of increased hardness does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Organopolysiloxane resins of increased hardness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organopolysiloxane resins of increased hardness will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-541406