Silicone-polyester powder coating compositions

Details Silicone-polyester powder coating compositions Silicone-polyester powder coating compositions

1985-06-17

1986-08-26

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525446, 528 25, 528 26, 528 29, C08G 6532

Patent

active

046084215

ABSTRACT:
New siloxane-polyesters, siloxane-ethers and siloxane-ether-polyesters, useful as powder coating resins, are prepared by reacting rigid diacids, neopentyl glycol, trimellitic anhydride with up to 90 percent hydroxyl functional silicone having about two .dbd.Si(R)--OH groups per molecule where R is lower alkyl or phenyl groups and the remaining silicon valences form ring-structured siloxanes. Improved powder properties, including crystallinity and tack temperatures of 50.degree.-90.degree. C., are believed to result in part from the rigidity provided by both the specific diacids and the cyclic silicones. The siloxane resins are hard at room temperature and can be powdered by methanical grinding. Powder coatings formulated from these resins are particularly suitable for coating metal and glass substrate.

REFERENCES:
patent: 3912670 (1975-10-01), Huemmer et al.
patent: 4107148 (1978-08-01), Fujiyoshi et al.
patent: 4348510 (1982-09-01), Keck et al.

Affiliated with

Also associated with

Rating

Silicone-polyester powder coating compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silicone-polyester powder coating compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicone-polyester powder coating compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2313055