CARBOXY-FUNCTIONAL HYDROLYZABLE SILANES

• US 3,627,806 A
• Filed: 12/29/1969
• Issued: 12/14/1971
• Est. Priority Date: 12/29/1969
• Status: Expired due to Term

• Current Assignee: Gary E. Legrow
• Original Assignee: Gary E. Legrow
• Inventors: Legrow, Gary E.
• Application Number:
  US04/888,939
• Time in Patent Office: 715 Days
• US Class Current: 556/427
• CPC Class Codes: C07F 7/0892 Compounds with a Si-O-N linkage
• CPC Class Codes: C07F 7/1804 Compounds having Si-O-C linkages Si-O-acyl linkages C07F7/1896
• CPC Class Codes: C07F 7/1896 Compounds having one or more Si-O-acyl linkages
• CPC Class Codes: C08G 63/68 Polyesters containing atoms other than carbon, hydrogen and oxygen C08G63/64 takes precedence

Abstract

Silanes of the formula (HOOC)mRSR'"'"''"'"'Si(R'"'"''"'"''"'"''"'"'n)Y3 n are made by adding unsaturated acids to HSR'"'"''"'"'Si(R'"'"''"'"''"'"''"'"'n)Y3 n or by adding mercapto carboxylic acids to alkenyl-Si(R'"'"''"'"''"'"''"'"'n)Y3 n. For example, thioglycolic acid is added to vinyltrimethoxysilane in the presence of a free radical generator to give HOOCCH2SCH2CH2Si(OMe)3. The acids are used as adhesion promotors for silicon rubber.

Claims

2. A silane in accordance with claim 1 which is of the formula HOOCCH2CH2S(CH2)3Si(OCH3)3.

3. A silane in accordance with claim 1 which is of the formula HOOCCH2S(CH2)2Si(OOCCH3)3.

4. A silane in accordance with claim 1 which is of the formula HOOCCH2S(CH2)2Si(OCH3)3.

5. A silane in accordance with claim 1 which is of the formula HOOCH2SCH2CH(CH3)CH2Si(OCH3)3.

6. A silane in accordance with claim 1 which is of the formula