Preparation of polymeric acetal carboxylates using molecular sie

Details Preparation of polymeric acetal carboxylates using molecular sie Preparation of polymeric acetal carboxylates using molecular sie

1979-06-18

1980-09-23

Phynes, Lucille M.

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

Synthetic resins

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

528230, 528245, 528246, 528494, C08F28306, C08G 600

Patent

active

042244200

ABSTRACT:
The alkali metal, ammonium and alkanol ammonium salts of polymeric acetal carboxylates are stable detergent builders under laundry use conditions but depolymerize in acid media, making the polymer fragments more readily biodegradable in waste streams. Such polymeric acetal carboxylates can now be made by a process which comprises bringing together in a reaction zone under polymerization conditions an ester of glyoxylic acid and a molecular sieve, and adding an alkyl vinyl ether to the resulting polymer in the presence of the molecular sieve to stabilize the polymer against rapid depolymerization in alkaline solution. The preferred alkyl vinyl ether is ethyl vinyl ether.

REFERENCES:
patent: 4140676 (1979-02-01), Crutchfield et al.
patent: 4144226 (1979-03-01), Crutchfield et al.
patent: 4146495 (1979-03-01), Crutchfield et al.

Affiliated with

Also associated with

Rating

Preparation of polymeric acetal carboxylates using molecular sie does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of polymeric acetal carboxylates using molecular sie, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of polymeric acetal carboxylates using molecular sie will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-645319